cookies.js

// 2^25 = 32MB.
// Do not want to test more cookies than that.
var MAX_COOKIE_TEST = 25;
var MAX_RANDOM_COOKIESETS_TEST_ATTEMPTS = 3;
var MAX_NUM_PAGE_LOAD_TIMEOUT_LIMIT = 2;
var MAX_PAGE_LOAD_TIMEOUT_IN_SECONDS_LIMIT = 20;

// **** BEGIN - Dump internal status functions
function onauthrequired_cb(details, my_callback) {
    console.log("APPU DEBUG: RequestID: " + details.requestId);
    console.log("APPU DEBUG: URL: " + details.url);
    console.log("APPU DEBUG: Method: " + details.method);
    console.log("APPU DEBUG: FrameID: " + details.frameId);
    console.log("APPU DEBUG: Parent FrameID: " + details.parentFrameId);
    console.log("APPU DEBUG: Tab ID: " + details.tabId);
    console.log("APPU DEBUG: Type: " + details.type);
    console.log("APPU DEBUG: Timestamp: " + details.timeStamp);
    console.log("APPU DEBUG: Scheme: " + details.scheme);
    console.log("APPU DEBUG: Realm: " + details.realm);
    console.log("APPU DEBUG: Challenger: " + details.challenger);
    console.log("APPU DEBUG: ResponseHeaders: " + details.responseHeaders);
    console.log("APPU DEBUG: StatusLine: " + details.statusLine);
}


// This is just a test function
// prints "set-cookie" commands in a HTTP Response.
function cb_headers_received(details) {
    if ("responseHeaders" in details) {
	var rh = details.responseHeaders;
	for (var i = 0; i < rh.length; i++) {
	    if (rh[i].name.toLowerCase() != "set-cookie") {
		continue;
	    }
	    console.log("APPU DEBUG: Response Header Name: " + rh[i].name);
	    if ("value" in rh[i]) {
		console.log("APPU DEBUG: Response Header Value: " + rh[i].value);
	    }
	    else if ("binaryValue" in rh[i]) {
		console.log("APPU DEBUG: Response Header Binary Value: " + rh[i].binaryValue);
	    }
	    else {
		console.log("APPU DEBUG: Response Header No Value Present");
	    }
	}
    }
}


function print_expiry_date(exp_seconds) {
    var d = new Date(0); 
    d.setUTCSeconds(exp_seconds);
    console.log("APPU DEBUG: Expiry date for(" + exp_seconds + "): " + d);
}


function get_all_cookies(domain, handle_cookies) {
    if(!handle_cookies) {
	    console.log("APPU DEBUG: handle_cookies() is undefined");
    }
    chrome.cookies.getAll(
			  {
			      'domain' : domain,
				  }, 
			  handle_cookies);
}


function print_appu_session_store_cookies(domain, cookie_class) {
    var cs = pii_vault.aggregate_data.session_cookie_store[domain];
    var tot_cookies = 0;
    var msg = "\n";

    for (c in cs.cookies) {
	if (cookie_class && (cs.cookies[c].cookie_class == cookie_class)) {
	    msg += sprintf("(%s) %s,\n", cs.cookies[c].current_state, c);
	    tot_cookies += 1;
	}
	else if (cookie_class == undefined) {
	    msg += sprintf("(%s) %s(%s),\n", cs.cookies[c].current_state, c, cs.cookies[c].cookie_class);
	    tot_cookies += 1;
	}
    }

    msg = "APPU DEBUG: Domain: " + domain + ", Total-cookies: " + tot_cookies + ", Cookie-names: " + msg;
    console.log(msg);
}


function print_confirmed_account_cookies(domain, only_present) {
    var cs = pii_vault.aggregate_data.session_cookie_store[domain];
    var account_cookies = [];

    only_present = (only_present == undefined) ? true : only_present;

    for (c in cs.cookies) {
	if (cs.cookies[c].is_part_of_account_cookieset == true) {
	    if (only_present && cs.cookies[c].current_state == "absent") {
		continue;
	    }
	    account_cookies.push(c);
	}
    }

    print_cookie_values(domain, account_cookies);
}

// Print the cookies discovered in "expand-state" phase
function print_expand_state_cookies(domain, only_present) {
    var cs = pii_vault.aggregate_data.session_cookie_store[domain];
    var account_cookies = [];

    only_present = (only_present == undefined) ? true : only_present;

    for (c in cs.cookies) {
	if (cs.cookies[c].cookie_class == 'during') {
	    continue;
	}
	if (cs.cookies[c].is_part_of_account_cookieset == true) {
	    if (only_present && cs.cookies[c].current_state == "absent") {
		continue;
	    }
	    account_cookies.push(c);
	}
    }
    print_cookie_values(domain, account_cookies);
}


function print_account_cookies(domain, only_present) {
    var cs = pii_vault.aggregate_data.session_cookie_store[domain];

    if (!cs || !cs.cookies) {
	console.log("APPU DEBUG: No account cookies detected");
	return;
    }

    var account_cookies = [];

    only_present = (only_present == undefined) ? true : only_present;

    for (c in cs.cookies) {
	if (cs.cookies[c].cookie_class == 'during' ||
	     cs.cookies[c].is_part_of_account_cookieset == true) {
	    if (only_present && cs.cookies[c].current_state == "absent") {
		continue;
	    }
	    account_cookies.push(c);
	}
    }

    print_cookie_values(domain, account_cookies);
}


// Purely for debugging purpose.
// We don't need to actually access the cookie values
// in actual deployments
function print_cookie_values(domain, cookie_names) {
    var all_done = [];
    var cookie_info = {};
    for (var j = 0; j < cookie_names.length; j++) {
	all_done[j] = false;
	cookie_info[cookie_names[j]] = undefined;
    }
    
    chrome.cookies.getAll({
	    'domain' : domain,
		}, 
	(function(cookie_names) {
	    return function (all_cookies) {
		var cs = pii_vault.aggregate_data.session_cookie_store[domain];
		for (var i = 0; i < all_cookies.length; i++) {
		    var cookie_name = all_cookies[i].name;
		    var cookie_domain = all_cookies[i].domain;
		    var cookie_path = all_cookies[i].path;
		    var cookie_protocol = (all_cookies[i].secure) ? "https://" : "http://";
		    var cookie_key = cookie_protocol + cookie_domain + cookie_path + ":" + cookie_name;
		    var search_index = cookie_names.indexOf(cookie_key);

		    if (search_index == -1) {
			continue;
		    }
		    else {
			all_done[search_index] = true;
		    }
		    
		    var expiry_time = 'no-expiry-time';
		    if ('expirationDate' in all_cookies[i]) {
			var exp_seconds = all_cookies[i].expirationDate;
			var d = new Date(0); 
			d.setUTCSeconds(exp_seconds);
			expiry_time = d.toLocaleString();
		    }
		    else {
			expiry_time = 'browser-close';
		    }

		    var cookie_val = undefined;
		    try {
			cookie_val = decodeURIComponent(all_cookies[i].value);
		    }
		    catch(e) {
			cookie_val = all_cookies[i].value;
		    }
		    
		    //cookie_val = all_cookies[i].value;

		    var msg = sprintf("Cookie-key: '%s', " + 
				      "\n\tValue-Length: %3d, " +
				      "HostOnly: '%s', " +
				      "Secure: '%s', " + 
				      "HttpOnly: '%s', " +
				      "Session: '%s', " + 
				      "Expiration: '%s', " + 
				      "\n\tValue: '%s', " +
				      "Appu Class: '%s'",
				      cookie_key,
				      all_cookies[i].value.length,
				      all_cookies[i].hostOnly,
				      all_cookies[i].secure,
				      all_cookies[i].httpOnly,
				      all_cookies[i].session,
				      expiry_time,
				      cookie_val,
				      cs.cookies[cookie_key].cookie_class);

		    cookie_info[cookie_key] = msg;
		    if (all_done.indexOf(false) == -1) {
			break;
		    }
		}

		var found_cookies = Object.keys(cookie_info);
		console.log("*****************************");
		console.log("APPU DEBUG: Printing all SUSPECTED-ACCOUNT-COOKIES for: " + domain);
		var index = 1;
		for (var j = 0; j < found_cookies.length; j++) {
		    if (cookie_info[found_cookies[j]] == undefined) {
			continue;
		    }
		    console.log((index++) + ". " + cookie_info[found_cookies[j]]);
		}
		console.log("*****************************");
	    }
	}(cookie_names)));
}


// All cookies related to a particular domain
function print_all_cookies(domain) {
    var cb_cookies = (function(domain) {
	    return function(all_cookies) {
		var tot_hostonly = 0;
		var tot_httponly = 0;
		var tot_secure = 0;
		var tot_session = 0;
		
		console.log("*****************************");
		console.log("APPU DEBUG: Printing ALL cookies for: " + domain);
		for (var i = 0; i < all_cookies.length; i++) {
		    var cookie_str = "";
		    var cookie_name = all_cookies[i].name;
		    var cookie_domain = all_cookies[i].domain;
		    var cookie_path = all_cookies[i].path;
		    var cookie_protocol = (all_cookies[i].secure) ? "https://" : "http://";
		    var cookie_key = cookie_protocol + cookie_domain + cookie_path + ":" + cookie_name;
		    
		    var expiry_time = 'no-expiry-time';
		    if ('expirationDate' in all_cookies[i]) {
			var exp_seconds = all_cookies[i].expirationDate;
			var d = new Date(0); 
			d.setUTCSeconds(exp_seconds);
			expiry_time = d.toLocaleString();
		    }
		    else {
			expiry_time = 'browser-close';
		    }
		    
		    var cookie_val = undefined;
		    try {
			cookie_val = decodeURIComponent(all_cookies[i].value);
		    }
		    catch(e) {
			cookie_val = all_cookies[i].value;
		    }
		    // cookie_val = all_cookies[i].value;


		    var msg = sprintf("Cookie-key: '%s', " + 
				      "\n\tValue-Length: %3d, " + 
				      "HostOnly: '%s', " +
				      "Secure: '%s', " + 
				      "HttpOnly: '%s', " +
				      "Session: '%s', " + 
				      "Expiration: '%s', " + 
				      "\n\tValue: '%s'",
				      cookie_key,
				      all_cookies[i].value.length,
				      all_cookies[i].hostOnly,
				      all_cookies[i].secure,
				      all_cookies[i].httpOnly,
				      all_cookies[i].session,
				      expiry_time,
				      cookie_val);
		    
		    if (all_cookies[i].hostOnly) {
			tot_hostonly += 1;
		    }
		    
		    if (all_cookies[i].secure) {
			tot_secure += 1;
		    }
		    
		    if (all_cookies[i].httpOnly) {
			tot_httponly += 1;
		    }
		    
		    if (all_cookies[i].session) {
			tot_session += 1;
		    }
		    
		    console.log(i + ". " + msg);
		}
		console.log("-----------------------------");
		console.log("APPU DEBUG: Total HostOnly Cookies: " + tot_hostonly);
		console.log("APPU DEBUG: Total HTTPOnly Cookies: " + tot_httponly);
		console.log("APPU DEBUG: Total Secure Cookies: " + tot_secure);
		console.log("APPU DEBUG: Total Session Cookies: " + tot_session);
		console.log("APPU DEBUG: Total number of cookies: " + all_cookies.length);
		console.log("*****************************");
	    }
	})(domain);

    get_all_cookies(domain, cb_cookies);
}

function print_auth_cookies(domain) {
    read_from_local_storage("Auth-Cookie-Equation:" + domain, function(acd) {
	    acd = acd["Auth-Cookie-Equation:" + domain];

	    for (var k in acd) {
		console.log("APPU DEBUG: Key: " + k + ", value: " + acd[k]);
	    }
	});
}

function compare_auth_cookies(domain) {
    read_from_local_storage("Auth-Cookie-Equation:" + domain, function(acd) {
	    acd = acd["Auth-Cookie-Equation:" + domain];
	    var f = {};

	    for (var ck in acd) {
		f[ck] = false;
	    }

	    var cb_cookies = (function(domain) {
		    return function(all_cookies) {
			for (var i = 0; i < all_cookies.length; i++) {
			    var cookie_str = "";
			    var cookie_name = all_cookies[i].name;
			    var cookie_domain = all_cookies[i].domain;
			    var cookie_path = all_cookies[i].path;
			    var cookie_protocol = (all_cookies[i].secure) ? "https://" : "http://";
			    var cookie_key = cookie_protocol + cookie_domain + cookie_path + ":" + cookie_name;
			    cookie_val = all_cookies[i].value;

			    if (cookie_key in acd) {
				f[cookie_key] = true;
				if (acd[cookie_key] == cookie_val) {
				    console.log("APPU DEBUG: Values matched for auth-cookie: " + cookie_key);
				}
				else {
				    console.log("APPU DEBUG: Values DID NOT match for auth-cookie: " + cookie_key);
				}
			    }
			}

			for (var ck in f) {
			    if (f[ck] == false) {
				console.log("APPU DEBUG: Did not find auth-cookie: " + ck);
			    }
			}
		    }
		})(domain);
	    
	    get_all_cookies(domain, cb_cookies);
	});
}


// Print all the cookies whose value contain one of the names in PI store.
// Only fields with tags "usernameXXX" and "emailXXX" are checked.
// For emails, check full email and then only anything that comes before "@".
// Any component that is found out should be > 4 characters.
function print_cookies_with_values_containing_usernames(domain) {
    var cb_cookies = (function(domain) {
	    return function(all_cookies) {
		var tot_hostonly = 0;
		var tot_httponly = 0;
		var tot_secure = 0;
		var tot_session = 0;
		var detected_usernames = {};
		
		var pi_usernames = get_all_values_of_types(["username", "name", "email"], true);

		console.log("APPU DEBUG: Printing all cookies containing usernames for: " + domain);
		for (var i = 0; i < all_cookies.length; i++) {
		    for (var j = 0; j < pi_usernames.length; j++) {
			if (all_cookies[i].value.indexOf(pi_usernames[j]) != -1) {
			    detected_usernames[pi_usernames[j]] = true;
			    var cookie_str = "";
			    var cookie_name = all_cookies[i].name;
			    var cookie_domain = all_cookies[i].domain;
			    var cookie_path = all_cookies[i].path;
			    var cookie_protocol = (all_cookies[i].secure) ? "https://" : "http://";
			    var cookie_key = cookie_protocol + cookie_domain + cookie_path + ":" + cookie_name;
			    
			    cookie_str += "Cookie Key: " + cookie_key;
			    cookie_str += ", HostOnly: '" + all_cookies[i].hostOnly + "'";
			    cookie_str += ", Secure: '" + all_cookies[i].secure + "'";
			    cookie_str += ", HttpOnly: '" + all_cookies[i].httpOnly + "'";
			    cookie_str += ", Session: '" + all_cookies[i].session + "'";
			    cookie_str += ", Value: '" + all_cookies[i].value + "'";
			    cookie_str += ", Expiration: '" + all_cookies[i].expirationDate + "'";
			    
			    if (all_cookies[i].hostOnly) {
				tot_hostonly += 1;
			    }
			    
			    if (all_cookies[i].secure) {
				tot_secure += 1;
			    }
			    
			    if (all_cookies[i].httpOnly) {
				tot_httponly += 1;
			    }
			    
			    if (all_cookies[i].session) {
				tot_session += 1;
			    }
			    
			    console.log("APPU DEBUG: " + cookie_str);
			    
			    break;
			}
		    }
		}
		console.log("APPU DEBUG: Total HostOnly Cookies: " + tot_hostonly);
		console.log("APPU DEBUG: Total HTTPOnly Cookies: " + tot_httponly);
		console.log("APPU DEBUG: Total Secure Cookies: " + tot_secure);
		console.log("APPU DEBUG: Total Session Cookies: " + tot_session);
		console.log("APPU DEBUG: Total number of cookies: " + all_cookies.length);
		console.log("APPU DEBUG: Detected usernames: " + JSON.stringify(Object.keys(detected_usernames)));
	    }
	})(domain);

    get_all_cookies(domain, cb_cookies);
}

function print_request_body(details) {
    if (details.requestBody) {
	console.log("APPU DEBUG: Printing request body: " + JSON.stringify(details.requestBody));
    }
    else {
	console.log("APPU DEBUG: No request body is present");
    }
}

function print_redirect_information(details) {
    if (get_domain(details.redirectUrl.split("/")[2]) != 'live.com') { 
	console.log("APPU DEBUG: REDIRECT INFO: Current URL: " + details.url +
		    ", FrameID: " + details.frameId + 
		    ", type: " + details.type);
	console.log("APPU DEBUG: REDIRECT INFO: Redirection URL: " + details.redirectUrl +
		    ", FrameID: " + details.frameId + 
		    ", type: " + details.type);
    }
}


function print_sent_headers(details) {
    if (get_domain(details.url.split("/")[2]) != 'live.com') {
	console.log("Here here: Sent headers: " + JSON.stringify(details));
    }
}

// Returns all cookies present on disk at this moment across all
// sites.
function count_all_cookies() {
    chrome.cookies.getAll({}, function(all_cookies) {
	    var tot_sites = 0;
	    var tot_hostonly = 0;
	    var tot_httponly = 0;
	    var tot_secure = 0;
	    var tot_session = 0;
	    var per_site_cookie_count = {};
	    
	    for (var i = 0; i < all_cookies.length; i++) {
		var cookie_domain = all_cookies[i].domain;
		if (cookie_domain[0] == '.') {
		    cookie_domain = cookie_domain.slice(1, cookie_domain.length);
		}
		cookie_domain = get_domain(cookie_domain);

		if (per_site_cookie_count[cookie_domain] == undefined) {
		    per_site_cookie_count[cookie_domain] = 1;
		    tot_sites += 1;
		}
		else {
		    per_site_cookie_count[cookie_domain] += 1;
		}

		if (all_cookies[i].hostOnly) {
		    tot_hostonly += 1;
		}

		if (all_cookies[i].secure) {
		    tot_secure += 1;
		}

		if (all_cookies[i].httpOnly) {
		    tot_httponly += 1;
		}

		if (all_cookies[i].session) {
		    tot_session += 1;
		}
	    }

	    var order_by_num_cookies = [];
	    for (var site in per_site_cookie_count) {
		order_by_num_cookies.push([site, per_site_cookie_count[site]]);
	    }

	    order_by_num_cookies.sort(function(a, b) {return a[1] - b[1]});

	    for (var i in order_by_num_cookies) {
		console.log("APPU DEBUG: Site: " + order_by_num_cookies[i][0] + 
			    ", Cookies: " + order_by_num_cookies[i][1]);
	    }

	    console.log("APPU DEBUG: ----------------------------------- ");
	    console.log("APPU DEBUG: Total HostOnly Cookies: " + tot_hostonly);
	    console.log("APPU DEBUG: Total HTTPOnly Cookies: " + tot_httponly);
	    console.log("APPU DEBUG: Total Secure Cookies: " + tot_secure);
	    console.log("APPU DEBUG: Total Session Cookies: " + tot_session);
	    console.log("APPU DEBUG: Total Number of Sites: " + tot_sites);
	    console.log("APPU DEBUG: Total Number of Cookies: " + all_cookies.length);
	});
}

// **** END - Dump internal status functions


// **** BEGIN - Investigation state load/offload functions
// This is to unlimitedStorage.
// None of the sensitive data is stored here.


function delete_pending_cookie_investigation_state(domain) {
    for (var i = 0; i < storage_meta.storage_meta.length; i++) {
	if (storage_meta.storage_meta[i].indexOf(domain) != -1) {
	    console.log("APPU DEBUG: Found matching pending cookie investigation state: " + storage_meta.storage_meta[i]);
	    console.log("APPU DEBUG: Deleting pending cookie investigation state for: " + domain);
	    delete_from_local_storage(storage_meta.storage_meta[i]);
	    return;
	}
    }
    console.log("APPU DEBUG: No matching pending cookie investigation state found for: " + domain);
}

function offload_cookie_investigation_state(url, cookie_investigation_state, quiet) {
    quiet = (quiet == undefined) ? false : true;
    var url_wo_paramters = url.replace(/\?.*/,'');
    var data = {};
    if (!quiet) {
	console.log("APPU DEBUG: Offloading CI state for: " + url_wo_paramters);
    }
    data["Cookie Investigation State:" + url_wo_paramters] = cookie_investigation_state;
    write_to_local_storage(data);
}

function load_cookie_investigation_state(url, cb) {
    var url_wo_paramters = url.replace(/\?.*/,'');
    console.log("APPU DEBUG: Loading CI state for: " + url_wo_paramters);
    if (cb == undefined) {
	cb = cb_print("APPU DEBUG: CI state for: " + url + "\n")
    }
    read_from_local_storage("Cookie Investigation State:" + url_wo_paramters, cb);
}

function remove_cookie_investigation_state(url) {
    var url_wo_paramters = url.replace(/\?.*/,'');
    console.log("APPU DEBUG: Cleaning CI state for: " + url_wo_paramters);
    delete_from_local_storage("Cookie Investigation State:" + url_wo_paramters);
}

function restore_cookie_investigation_state_from_backup(url, backup_name) {
    if (backup_name == undefined ||
	backup_name == "") {
	console.log("APPU DEBUG: Backup name cannot be empty");
	return;
    }

    function restore_backup(state) {
	var bn_name = "Cookie Investigation State:" + backup_name; 

	offload_cookie_investigation_state(url, state[bn_name]);
    }

    load_cookie_investigation_state(backup_name, restore_backup);
}

function backup_cookie_investigation_state(url, backup_name) {
    if (backup_name == undefined ||
	backup_name == "") {
	console.log("APPU DEBUG: Backup name cannot be empty");
	return;
    }

    function backup(state) {
	var url_wo_paramters = url.replace(/\?.*/,'');
	url = "Cookie Investigation State:" + url_wo_paramters; 
	offload_cookie_investigation_state(backup_name, state[url]);
    }

    load_cookie_investigation_state(url, backup);
}

function modify_cookie_investigation_state(url, modified_values) {
    function modify_and_store(obj) {
	var url_wo_paramters = url.replace(/\?.*/,'');
	var data_key = "Cookie Investigation State:" + url_wo_paramters; 
	var original_ci_state = obj[data_key];

	var modified_properties = Object.keys(modified_values);
	for (var i = 0; i < modified_properties.length; i++) {
	    var p = modified_properties[i];
	    if (!original_ci_state[p]) {
		console.log("APPU DEBUG: Property '" + p + 
			    "' does not exist in the current cookie-investigation state for: " + 
			    url);
	    }
	    original_ci_state[p] = modified_values[p];
	    console.log("APPU DEBUG: Changed property '" + p + "' to '" + 
			JSON.stringify(original_ci_state[p]) + "' in cookie-investigation state for: " + 
			url);
	}
	offload_cookie_investigation_state(url, original_ci_state);
    }

    load_cookie_investigation_state(url, modify_and_store);
}


function get_enabled_cookies(dca, suspected_account_cookies_array) {
    var eca = [];

    for (var k = 0; k < suspected_account_cookies_array.length; k++) {
	if (dca.indexOf(suspected_account_cookies_array[k]) == -1) {
	    eca.push(suspected_account_cookies_array[k]);
	}
    }

    return eca;
}

function print_enabled_cookies(cookiesets_array, suspected_account_cookies_array) {
    console.log("APPU DEBUG: Enabled cookies in cookiesets-array:");
    for (var i = 0; i < cookiesets_array.length; i++) {
	var eca = get_enabled_cookies(cookiesets_array[i], suspected_account_cookies_array);
	console.log((i+1) + ". Length: " + eca.length + ", Array: " + JSON.stringify(eca));
    }
}

function check_sanity_s_na_GUB(s_na_GUB_cookiesets_array, suspected_account_cookies_array) {
    var LB_s_na_GUB_decimal_cookiesets = [];
    var LB_s_na_GUB_cookiesets_array = [];

    for (var i = 0; i < s_na_GUB_cookiesets_array.length; i++) {
	var ca = s_na_GUB_cookiesets_array[i];
	var rc = convert_cookie_array_to_binary_cookieset(ca, suspected_account_cookies_array, true);
	var bc = rc.binary_cookieset;
	var dc = rc.decimal_cookieset;

	var rc = add_to_set_if_no_subset_member(ca, 
						LB_s_na_GUB_cookiesets_array, 
						LB_s_na_GUB_decimal_cookiesets, 
						suspected_account_cookies_array,
						dc);
	if (rc[0] == 0) {
	    console.log("APPU DEBUG: A subset for element at " + i + " is already present at: " + rc[1]);
	}
	else if (rc[0] == 1 && rc[1].length > 0) {
	    var sub_elem = get_enabled_cookies(ca, suspected_account_cookies_array);
	    console.log("APPU DEBUG: Cookieset :" + JSON.stringify(sub_elem));
	    console.log("            IS subset of: ");
	    for (var k = 0; k < rc[1].length; k++) {
		var e = get_enabled_cookies(s_na_GUB_cookiesets_array[rc[1][k]], suspected_account_cookies_array);
		console.log("            Cookieset :" + JSON.stringify(e));
	    }
	}
    }

    console.log("APPU DEBUG: Original array length: " + s_na_GUB_cookiesets_array.length 
		+ ", Only subsets array length: " + LB_s_na_GUB_cookiesets_array.length);

    if (s_na_GUB_cookiesets_array.length == LB_s_na_GUB_cookiesets_array.length) {
	return true;
    }
    return false;
}

function check_sanity_s_a_GUB(s_a_GUB_cookiesets_array, suspected_account_cookies_array) {
    var LB_s_a_GUB_decimal_cookiesets = [];
    var LB_s_a_GUB_cookiesets_array = [];

    for (var i = 0; i < s_a_GUB_cookiesets_array.length; i++) {
	var ca = s_a_GUB_cookiesets_array[i];
	var rc = convert_cookie_array_to_binary_cookieset(ca, suspected_account_cookies_array);
	var bc = rc.binary_cookieset;
	var dc = rc.decimal_cookieset;

	add_to_set_if_no_subset_member(ca, 
				       LB_s_a_GUB_cookiesets_array, 
				       LB_s_a_GUB_decimal_cookiesets, 
				       suspected_account_cookies_array,
				       dc);
    }

    console.log("APPU DEBUG: Original array length: " + s_a_GUB_cookiesets_array.length 
		+ ", Only subsets array length: " + LB_s_a_GUB_cookiesets_array.length);

    if (s_a_GUB_cookiesets_array.length == LB_s_a_GUB_cookiesets_array.length) {
	return true;
    }
    return false;
}

// Print all cookiesets that have been tested so far for a URL
function print_cookie_investigation_state(url) {
    function process_state(state) {
	var url_wo_paramters = url.replace(/\?.*/,'');
	url = "Cookie Investigation State:" + url_wo_paramters; 

	if (state == undefined ||
	    JSON.stringify(state) == JSON.stringify({})) {
	    console.log("APPU DEBUG: State is not detected for URL: " + url);
	    return;
	}

	var expand_state_discovered_cookies = JSON.parse(state[url]["expand_state_discovered_cookies"]);
	var on_disk_s_a_LLB_cookiesets_array = state[url]["on_disk_s_a_LLB_cookiesets_array"];
	var on_disk_s_na_LLB_cookiesets_array = state[url]["on_disk_s_na_LLB_cookiesets_array"];
	var on_disk_s_a_GUB_cookiesets_array = state[url]["on_disk_s_a_GUB_cookiesets_array"];
	var on_disk_s_na_GUB_cookiesets_array = state[url]["on_disk_s_na_GUB_cookiesets_array"];
	var on_disk_ns_na_LLB_cookiesets_array = state[url]["on_disk_ns_na_LLB_cookiesets_array"];
	var on_disk_ns_a_GUB_cookiesets_array = state[url]["on_disk_ns_a_GUB_cookiesets_array"];

	var suspected_account_cookies_array = state[url]["suspected_account_cookies_array"];
	var non_suspected_account_cookies_array = state[url]["non_suspected_account_cookies_array"];

	var tot_time_taken = state[url]["tot_time_taken"];
	var tot_bytes_sent = state[url]["tot_bytes_sent"];
	var tot_bytes_recvd = state[url]["tot_bytes_recvd"];
	var tot_time_since_last_lo_change = state[url]["tot_time_since_last_lo_change"];
	var tot_attempts = state[url]["tot_attempts"];
	var tot_page_reloads_overall = state[url]["tot_page_reloads_overall"];
	var tot_page_reloads_naive = state[url]["tot_page_reloads_naive"];
	var tot_page_reloads_since_last_lo_change = state[url]["tot_page_reloads_since_last_lo_change"];
	var tot_cookiesets_tested_overall = state[url]["tot_cookiesets_tested_overall"];
	var tot_gub_cookiesets_tested_overall = state[url]["tot_gub_cookiesets_tested_overall"];
	var cookiesets_optimization_stats = state[url]["cookiesets_optimization_stats"];
	var tot_expand_state_cookiesets_tested_overall = state[url]["tot_expand_state_cookiesets_tested_overall"];
	var tot_expand_state_entered = state[url]["tot_expand_state_entered"];
	var num_cookies_drop_for_round = state[url]["num_cookies_drop_for_round"];
	var num_cookies_pass_for_round = state[url]["num_cookies_pass_for_round"];

	var curr_llb_cookieset_array        = state[url]["curr_llb_cookieset_array"];
	var curr_binary_cs        = undefined;

	if (curr_llb_cookieset_array) {
	    curr_binary_cs = convert_cookie_array_to_binary_cookieset(curr_llb_cookieset_array, 
								      suspected_account_cookies_array);
	}

	var curr_gub_cookieset_array    = state[url]["curr_gub_cookieset_array"];
	var curr_gub_binary_cs    = undefined; 

	if (curr_gub_cookieset_array) {
	    curr_gub_binary_cs = convert_cookie_array_to_binary_cookieset(curr_gub_cookieset_array, 
									  suspected_account_cookies_array);
	}

	var next_llb_cookieset_array        = state[url]["next_llb_cookieset_array"];
	var next_binary_cs        = undefined;

	if (next_llb_cookieset_array) {
	    next_binary_cs = convert_cookie_array_to_binary_cookieset(next_llb_cookieset_array, 
								      suspected_account_cookies_array);
	}

	var next_gub_cookieset_array    = state[url]["next_gub_cookieset_array"];
	var next_gub_binary_cs    = undefined; 

	if (next_gub_cookieset_array) {
	    next_gub_binary_cs = convert_cookie_array_to_binary_cookieset(next_gub_cookieset_array, 
									  suspected_account_cookies_array);
	}

	console.log("APPU DEBUG: suspected_account_cookies_array length: " + 
		    suspected_account_cookies_array.length);
	console.log("-------------------");
	for (var i = 0; i < suspected_account_cookies_array.length; i++) {
	    console.log((i+1) + ". " + suspected_account_cookies_array[i]);
	}
	console.log("-------------------");
	console.log("");
	console.log("");
	console.log("-------------------");

	console.log("APPU DEBUG: non_suspected_account_cookies_array length: " + 
		    non_suspected_account_cookies_array.length);
	for (var i = 0; i < non_suspected_account_cookies_array.length; i++) {
	    console.log((i+1) + ". " + non_suspected_account_cookies_array[i]);
	}
	console.log("-------------------");

	console.log("APPU DEBUG: Last num_cookies_drop_for_round " + num_cookies_drop_for_round);
	console.log("APPU DEBUG: Last num_cookies_pass_for_round " + num_cookies_pass_for_round);

	if (curr_llb_cookieset_array) {
	    console.log("APPU DEBUG: curr_llb_cookieset_array: "       + JSON.stringify(curr_llb_cookieset_array));
	    console.log("APPU DEBUG: curr_binary_cs: "       + JSON.stringify(curr_binary_cs.binary_cookieset));
	    console.log("APPU DEBUG: curr_decimal_cs: "      + JSON.stringify(curr_binary_cs.decimal_cookieset));
	}

	if (curr_gub_cookieset_array) {
	    console.log("APPU DEBUG: curr_gub_cookieset_array: "   + JSON.stringify(curr_gub_cookieset_array));
	    console.log("APPU DEBUG: curr_gub_binary_cs: "   + JSON.stringify(curr_gub_binary_cs.binary_cookieset));
	    console.log("APPU DEBUG: curr_gub_decimal_cs: "  + JSON.stringify(curr_gub_binary_cs.decimal_cookieset));
	}

	if (next_llb_cookieset_array) {
	    console.log("APPU DEBUG: next_llb_cookieset_array: "       + JSON.stringify(next_llb_cookieset_array));
	    console.log("APPU DEBUG: next_binary_cs: "       + JSON.stringify(next_binary_cs.binary_cookieset));
	    console.log("APPU DEBUG: next_decimal_cs: "      + JSON.stringify(next_binary_cs.decimal_cookieset));
	}

	if (next_gub_cookieset_array) {
	    console.log("APPU DEBUG: next_gub_cookieset_array: "   + JSON.stringify(next_gub_cookieset_array));
	    console.log("APPU DEBUG: next_gub_binary_cs: "   + JSON.stringify(next_gub_binary_cs.binary_cookieset));
	    console.log("APPU DEBUG: next_gub_decimal_cs: "  + JSON.stringify(next_gub_binary_cs.decimal_cookieset));
	}

	console.log("APPU DEBUG: LLBs in suspected that cause logouts (Used for optimization): " + 
		    on_disk_s_a_LLB_cookiesets_array.length);
	console.log("APPU DEBUG: GUBs in suspected that *DO NOT* cause logouts (Used for optimization): " + 
		    on_disk_s_na_GUB_cookiesets_array.length);
	console.log("");
	console.log("APPU DEBUG: LLBs in suspected that *DO NOT* cause logouts (Wasted testing effort): " + 
		    on_disk_s_na_LLB_cookiesets_array.length);
	console.log("APPU DEBUG: GUBs in suspected that cause logouts (Wasted testing effort): " + 
		    on_disk_s_a_GUB_cookiesets_array.length);
	console.log("");
	console.log("EXPAND-STATE COOKIESET TESTING:");	
	console.log("APPU DEBUG: LLBs in non-suspected that *DO NOT* cause logouts: " + 
		    on_disk_ns_na_LLB_cookiesets_array.length);
	console.log("APPU DEBUG: GUBs in non-suspected that cause logouts: " + 
		    on_disk_ns_a_GUB_cookiesets_array.length);

	console.log("");
	console.log("BANDWIDTH: ");
	console.log("APPU DEBUG: Total bytes sent during investigation: " + get_human_readable_size(tot_bytes_sent)); 
	console.log("APPU DEBUG: Total bytes received during investigation: " + get_human_readable_size(tot_bytes_recvd)); 

	console.log("");
	console.log("TIME: ");
	console.log("APPU DEBUG: Total time taken for investigation so far: " + Math.floor((tot_time_taken/60)) + "m " +
		    Math.floor((tot_time_taken % 60)) + "s");
	console.log("APPU DEBUG: Total time in generating cookiesets: " + 
		    tot_time_since_last_lo_change);

	console.log("");
	console.log("ATTEMPTS & PAGE-FETCHES: ");
	console.log("APPU DEBUG: Total attempts so far: " + tot_attempts);
	console.log("APPU DEBUG: Total page reloads so far: " + tot_page_reloads_overall);
	console.log("APPU DEBUG: Total page reloads naive method so far: " + tot_page_reloads_naive);
	console.log("APPU DEBUG: Total times expand-state entered: " + tot_expand_state_entered);

	console.log("");
	console.log("COOKIESETS STATS: ");
	console.log("APPU DEBUG: Expand-state cookiesets: " + tot_expand_state_cookiesets_tested_overall);
	console.log("APPU DEBUG: GUB cookiesets: " + tot_gub_cookiesets_tested_overall);
	console.log("APPU DEBUG: Total cookiesets: " + tot_cookiesets_tested_overall);

	console.log("");
	console.log("");
	console.log("");
	console.log("-------------------");
	console.log("APPU DEBUG: Number of cookies discovered in past expand-states: " + 
		    expand_state_discovered_cookies.length);
	console.log("APPU DEBUG: Cookies discovered in past EXPAND-STATES: "); 
	for (var i = 0; i < expand_state_discovered_cookies.length; i++) {
	    console.log((i+1) + ". " + expand_state_discovered_cookies[i]);
	    console.log("");
	}
	console.log("-------------------");
	console.log("");
	console.log("");
	console.log("");

	console.log("-------------------");
	console.log("APPU DEBUG: LLBs in suspected that cause logouts (Used in optimization): " + 
		    on_disk_s_a_LLB_cookiesets_array.length);
	for (var i = 0; i < on_disk_s_a_LLB_cookiesets_array.length; i++) {
	    console.log((i+1) + ". " + JSON.stringify(on_disk_s_a_LLB_cookiesets_array[i]));
	    console.log("");
	}

	console.log("-------------------");
	console.log("");
	console.log("");
	console.log("");
	console.log("-------------------");


	console.log("APPU DEBUG: GUBs in suspected that *DO NOT* cause logouts (Used in optimization): " + 
		    on_disk_s_na_GUB_cookiesets_array.length);
	check_sanity_s_na_GUB(on_disk_s_na_GUB_cookiesets_array, suspected_account_cookies_array);

	for (var i = 0; i < on_disk_s_na_GUB_cookiesets_array.length; i++) {
	    var eca = [];
	    var dca = on_disk_s_na_GUB_cookiesets_array[i];
	    console.log("Enabled cookies: ");
	    for (var k = 0; k < suspected_account_cookies_array.length; k++) {
		if (dca.indexOf(suspected_account_cookies_array[k]) == -1) {
		    eca.push(suspected_account_cookies_array[k]);
		}
	    }
	    console.log((i+1) + ". Enabled cookies, Length: " + eca.length + 
			", Array: " + JSON.stringify(eca));
	    console.log("");
	}

	console.log("-------------------");
	console.log("");
	console.log("");
	console.log("");
	console.log("-------------------");

	console.log("APPU DEBUG: LLBs in suspected that *DO NOT* cause logouts (Wasted testing effort): " + 
		    on_disk_s_na_LLB_cookiesets_array.length);
	for (var i = 0; i < on_disk_s_na_LLB_cookiesets_array.length; i++) {
	    console.log((i+1) + ". Length: " + on_disk_s_na_LLB_cookiesets_array[i].length + 
			", Array: " + JSON.stringify(on_disk_s_na_LLB_cookiesets_array[i]));
	    console.log("");
	}

	console.log("-------------------");
	console.log("");
	console.log("");
	console.log("");
	console.log("-------------------");

	console.log("APPU DEBUG: GUBs in suspected that cause logouts (Wasted testing effort): " + 
		    on_disk_s_a_GUB_cookiesets_array.length);
	check_sanity_s_a_GUB(on_disk_s_a_GUB_cookiesets_array, suspected_account_cookies_array);

	for (var i = 0; i < on_disk_s_a_GUB_cookiesets_array.length; i++) {
	    console.log((i+1) + ". Length: " + on_disk_s_a_GUB_cookiesets_array[i].length + 
			", Array: " + JSON.stringify(on_disk_s_a_GUB_cookiesets_array[i]));
	    console.log("");
	}

	console.log("-------------------");
	console.log("");
	console.log("");
	console.log("");
	console.log("-------------------");
	console.log("");
	console.log("EXPAND-STATE cookiesets");
	console.log("");
	console.log("APPU DEBUG: LLBs in non-suspected that *DO NOT* cause logouts (Wasted testing effort): " + 
		    on_disk_ns_na_LLB_cookiesets_array.length);
	for (var i = 0; i < on_disk_ns_na_LLB_cookiesets_array.length; i++) {
	    console.log((i+1) + ". Length: " + on_disk_ns_na_LLB_cookiesets_array[i].length + 
			", Array: " +  JSON.stringify(on_disk_ns_na_LLB_cookiesets_array[i]));
	    console.log("");
	}

	console.log("-------------------");
	console.log("");
	console.log("");
	console.log("");
	console.log("-------------------");

	console.log("APPU DEBUG: GUBs in non-suspected that cause logouts (Wasted testing effort): " + 
		    on_disk_ns_a_GUB_cookiesets_array.length);
	for (var i = 0; i < on_disk_ns_a_GUB_cookiesets_array.length; i++) {
	    console.log((i+1) + ". Length: " + on_disk_ns_a_GUB_cookiesets_array[i].length + 
			", Array: " +  JSON.stringify(on_disk_ns_a_GUB_cookiesets_array[i]));
	    console.log("");
	}

	console.log("-------------------");
	console.log("");

	console.log("-------------------");
	console.log("APPU DEBUG: LLB & GUB OPTIMIZATION INFORMATION");
	console.log("APPU DEBUG: Skipped cookiesets going UP in POSET (subset in account-cookiesets): " + 
		    cookiesets_optimization_stats.num_llb_subset_in_account_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets going UP in POSET (superset in non-account-cookiesets): " + 
		    cookiesets_optimization_stats.num_llb_superset_in_non_account_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets going UP in POSET (superset in non-account-super-cookiesets): " + 
		    cookiesets_optimization_stats.num_llb_superset_in_non_account_super_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets going UP in POSET (subset in account-super-cookiesets): " + 
		    cookiesets_optimization_stats.num_llb_subset_in_account_super_cookiesets);
	
	console.log("APPU DEBUG: Skipped cookiesets coming DOWN in POSET (subset in account-cookiesets): " + 
		    cookiesets_optimization_stats.num_gub_subset_in_account_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets coming DOWN in POSET (superset in non-account-cookiesets): " + 
		    cookiesets_optimization_stats.num_gub_superset_in_non_account_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets coming DOWN in POSET (subset in account-super-cookiesets): " + 
		    cookiesets_optimization_stats.num_gub_subset_in_account_super_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets coming DOWN in POSET (superset in non-account-super-cookiesets): " + 
		    cookiesets_optimization_stats.num_gub_superset_in_non_account_super_cookiesets);

	console.log("-------------------");
    }

    load_cookie_investigation_state(url, process_state);
}

// Following is to be invoked as:
// load_cookie_investigation_state("https://google.com/", 
//                                 search_for_cookieset("https://google.com/", ["https://.google.com/:TEST_COOKIE1"]));
// Used to test if the cookieset has already been tested or not.
function search_for_cookieset(url, cookieset) {
    return function(state) {
	var url_wo_paramters = url.replace(/\?.*/,'');
	url = "Cookie Investigation State:" + url_wo_paramters; 

	if (state == undefined ||
	    JSON.stringify(state) == JSON.stringify({})) {
	    console.log("APPU DEBUG: State is not detected for URL: " + url);
	    return;
	}

	var expand_state_discovered_cookies = JSON.parse(state[url]["expand_state_discovered_cookies"]);
	var on_disk_s_a_LLB_cookiesets_array = state[url]["on_disk_s_a_LLB_cookiesets_array"];
	var on_disk_s_na_LLB_cookiesets_array = state[url]["on_disk_s_na_LLB_cookiesets_array"];
	var on_disk_s_a_GUB_cookiesets_array = state[url]["on_disk_s_a_GUB_cookiesets_array"];
	var on_disk_s_na_GUB_cookiesets_array = state[url]["on_disk_s_na_GUB_cookiesets_array"];
	var on_disk_ns_na_LLB_cookiesets_array = state[url]["on_disk_ns_na_LLB_cookiesets_array"];
	var on_disk_ns_a_GUB_cookiesets_array = state[url]["on_disk_ns_a_GUB_cookiesets_array"];

	var tot_time_taken = state[url]["tot_time_taken"];
	var tot_bytes_sent = state[url]["tot_bytes_sent"];
	var tot_bytes_recvd = state[url]["tot_bytes_recvd"];

	var tot_time_since_last_lo_change = state[url]["tot_time_since_last_lo_change"];
	var tot_attempts = state[url]["tot_attempts"];
	var tot_page_reloads_overall = state[url]["tot_page_reloads_overall"];
	var tot_page_reloads_naive = state[url]["tot_page_reloads_naive"];
	var tot_page_reloads_since_last_lo_change = state[url]["tot_page_reloads_since_last_lo_change"];
	var tot_cookiesets_tested_overall = state[url]["tot_cookiesets_tested_overall"];
	var tot_gub_cookiesets_tested_overall = state[url]["tot_gub_cookiesets_tested_overall"];
	var tot_expand_state_cookiesets_tested_overall = state[url]["tot_expand_state_cookiesets_tested_overall"];
	var tot_expand_state_entered = state[url]["tot_expand_state_entered"];

	var cookiesets_optimization_stats = state[url]["cookiesets_optimization_stats"];

	console.log("APPU DEBUG: Length on_disk_s_a_LLB_cookiesets_array: " + 
		    on_disk_s_a_LLB_cookiesets_array.length);
	console.log("APPU DEBUG: Length on_disk_s_na_LLB_cookiesets_array: " + 
		    on_disk_s_na_LLB_cookiesets_array.length);
	console.log("APPU DEBUG: Length on_disk_s_a_GUB_cookiesets_array: " + 
		    on_disk_s_a_GUB_cookiesets_array.length);
	console.log("APPU DEBUG: Length on_disk_s_na_GUB_cookiesets_array: " + 
		    on_disk_s_na_GUB_cookiesets_array.length);
	console.log("APPU DEBUG: Length on_disk_ns_na_LLB_cookiesets_array: " + 
		    on_disk_ns_na_LLB_cookiesets_array.length);
	console.log("APPU DEBUG: Length on_disk_ns_na_LLB_cookiesets_array: " + 
		    on_disk_ns_na_LLB_cookiesets_array.length);
	console.log("APPU DEBUG: Length of on_disk_ns_a_GUB_cookiesets_array: " + 
		    on_disk_ns_a_GUB_cookiesets_array.length);


	console.log("APPU DEBUG: Total bytes sent during investigation: " + tot_bytes_sent);
	console.log("APPU DEBUG: Total bytes recieved during investigation: " + tot_bytes_recvd);

	console.log("APPU DEBUG: Total time taken for investigation: " + Math.floor((tot_time_taken/60)) + "m " +
		    Math.floor((tot_time_taken % 60)) + "s");
	console.log("APPU DEBUG: Total attempts: " + tot_attempts);
	console.log("APPU DEBUG: Total page reloads overall so far: " + tot_page_reloads_overall);
	console.log("APPU DEBUG: Total page reloads naive method so far: " + tot_page_reloads_naive);
	console.log("APPU DEBUG: Total times expand-state entered: " + tot_expand_state_entered);
	console.log("APPU DEBUG: Total expand cookiesets tested: " + tot_expand_state_cookiesets_tested_overall);
	console.log("APPU DEBUG: Total GUB cookiesets tested: " + tot_gub_cookiesets_tested_overall);
	console.log("APPU DEBUG: Total cookiesets tested: " + tot_cookiesets_tested_overall);
	console.log("APPU DEBUG: Total time in generating cookiesets: " + 
		    tot_time_since_last_lo_change);

	for (var i = 0; i < on_disk_s_a_LLB_cookiesets_array.length; i++) {
	    if (cookieset.sort().compare(on_disk_s_a_LLB_cookiesets_array[i].sort())) {
		console.log("APPU DEBUG: Cookieset present in on_disk_s_a_LLB_cookiesets_array at index: " + i);
	    }
	}

	for (var i = 0; i < on_disk_s_na_LLB_cookiesets_array.length; i++) {
	    if (cookieset.sort().compare(on_disk_s_na_LLB_cookiesets_array[i].sort())) {
		console.log("APPU DEBUG: Cookieset present in on_disk_s_na_LLB_cookiesets_array at index: " + i);
	    }
	}

	for (var i = 0; i < on_disk_s_a_GUB_cookiesets_array.length; i++) {
	    if (cookieset.sort().compare(on_disk_s_a_GUB_cookiesets_array[i].sort())) {
		console.log("APPU DEBUG: Cookieset present in on_disk_s_a_GUB_cookiesets_array at index: " + i);
	    }
	}

	for (var i = 0; i < on_disk_s_na_GUB_cookiesets_array.length; i++) {
	    if (cookieset.sort().compare(on_disk_s_na_GUB_cookiesets_array[i].sort())) {
		console.log("APPU DEBUG: Cookieset present in on_disk_s_na_GUB_cookiesets_array at index: " + i);
	    }
	}

	for (var i = 0; i < on_disk_ns_na_LLB_cookiesets_array.length; i++) {
	    if (cookieset.sort().compare(on_disk_ns_na_LLB_cookiesets_array[i].sort())) {
		console.log("APPU DEBUG: Cookieset present in on_disk_ns_na_LLB_cookiesets_array at index: " + i);
	    }
	}

	for (var i = 0; i < on_disk_ns_a_GUB_cookiesets_array.length; i++) {
	    if (cookieset.sort().compare(on_disk_ns_a_GUB_cookiesets_array[i].sort())) {
		console.log("APPU DEBUG: Cookieset present in on_disk_ns_a_GUB_cookiesets_array at index: " + i);
	    }
	}

    }
}

// **** END - Investigation state load/offload functions

// **** BEGIN ---- Rest of the logic ----

// Accepts a URL and array of cookies.
// It will then mark them as "after" class cookies and
// set their "is_part_of_account_cookieset" to false.
// This is useful to test if EXPAND-STATE is properly working.
function mark_as_insignificant_cookies(url, cookies_array) {
    var my_domain = get_domain(url.split("/")[2]);
    
    var all_cookies = pii_vault.aggregate_data.session_cookie_store[my_domain].cookies;
    for (var c in all_cookies) {
	if (cookies_array.indexOf(c) != -1) {
	    all_cookies[c].is_part_of_account_cookieset = false;
	    all_cookies[c].cookie_class = 'after';
	}
    }
    flush_session_cookie_store();
}

function mark_as_significant_cookies(url, cookies_array) {
    var my_domain = get_domain(url.split("/")[2]);
    
    var all_cookies = pii_vault.aggregate_data.session_cookie_store[my_domain].cookies;
    for (var c in all_cookies) {
	if (cookies_array.indexOf(c) != -1) {
	    all_cookies[c].is_part_of_account_cookieset = true;
	}
    }
    flush_session_cookie_store();
}

function reset_nonduring_account_cookies(url) {
    var my_domain = get_domain(url.split("/")[2]);
    
    var all_cookies = pii_vault.aggregate_data.session_cookie_store[my_domain].cookies;
    for (var c in all_cookies) {
	if (all_cookies[c].cookie_class != 'during') {
	    all_cookies[c].is_part_of_account_cookieset = false;
	}
    }
    flush_session_cookie_store();
}

function cookie_store_offload(domain, offload_name, url) {
    console.log("APPU DEBUG: Storing cookie store for: " + domain);
    var cookie_store = {};

    if (url == undefined) {
	url = "";
    }

    get_browser_cookie_store_copy(domain, cookie_store, function(backup_store) {
	    var data = {};
	    if (offload_name != undefined) {
		data["CookieStore:" + offload_name] = {
		    'backup_store' : backup_store,
		    'url' : url,
		};
	    }
	    else {
		data["CookieStore:" + domain] =  {
		    'backup_store' : backup_store,
		    'url' : url,
		};
	    }

	    write_to_local_storage(data);
	});
}

function cookie_store_load(domain, bool_restore_to_browser_cookie_store, cb_load_done) {
    console.log("APPU DEBUG: Loading cookie store for: " + domain);
    var cb = undefined;
    if (bool_restore_to_browser_cookie_store == undefined ||
	bool_restore_to_browser_cookie_store == false) {
	if (cb_load_done != undefined) {
	    cb = cb_load_done;
	}
	else {
	    cb = cb_print("APPU DEBUG: cookie store for: " + domain + "\n");
	}
    }
    else {
	cb = function(cs) {
	    dump_to_browser_cookie_store(cs["CookieStore:" + domain]["backup_store"]);
	}
    }
    
    read_from_local_storage("CookieStore:" + domain, cb);
}

function cookie_store_remove(domain) {
    console.log("APPU DEBUG: Cleaning cookie store of: " + domain);
    delete_from_local_storage("CookieStore:" + domain);
}

function get_browser_cookie_store_copy(domain, backup_store, cb) {
    var cb_cookies = (function(domain, backup_store, cb) {
	    return function(all_cookies) {
		backup_store.cookies = all_cookies;
		backup_store.snapshot_time = new Date();
		if (cb) {
		    cb(backup_store);
		}
	    }
	})(domain, backup_store, cb);

    get_all_cookies(domain, cb_cookies);
}

function set_single_cookie(cookie_obj, cookie_stats, cb) {
    chrome.cookies.set(cookie_obj, function(rc) {
	    if (rc == null) {
		if (chrome.runtime.lastError) {
		    console.log("APPU DEBUG: Failed to set the cookie: " + JSON.stringify(chrome.runtime.lastError));
		    console.log("APPU DEBUG: Cookie: " + JSON.stringify(cookie_obj));
		}
	    }
	    else {
		// console.log("APPU DEBUG: Cookie set successful: " + JSON.stringify(rc));
	    }

	    // I am assuming here that JS engine in chrome will serialize callbacks one
	    // after another. Thus there are no race conditions.
	    // Without this assumption, it is impossible to make it work as there are
	    // no mutex objects.
	    cookie_stats.total -= 1;
	    if (cb && cookie_stats.total == 0) {
		cb();
	    }
	});
}

function dump_to_browser_cookie_store(backup_store, cb) {
    var all_cookies = backup_store.cookies;
    var cookie_stats = {
	"total" : all_cookies.length
    };

    for (var i = 0; i < all_cookies.length; i++) {
	var set_cookie_obj = {};
	if (all_cookies[i].name == "Y" && all_cookies[i].domain == ".yahoo.com") {
	    all_cookies[i].secure = true;
	}

	var my_url = all_cookies[i].secure ? "https://" : "http://";
	my_url += all_cookies[i].domain;

	set_cookie_obj.url = my_url;
	set_cookie_obj.name = all_cookies[i].name;
	set_cookie_obj.value = all_cookies[i].value;
	set_cookie_obj.path = all_cookies[i].path;
	set_cookie_obj.storeId = all_cookies[i].storeId;
	set_cookie_obj.expirationDate = all_cookies[i].expirationDate;
	set_cookie_obj.secure = all_cookies[i].secure;
	set_cookie_obj.httpOnly = all_cookies[i].httpOnly;
	set_single_cookie(set_cookie_obj, cookie_stats, cb);
    }
}


// Returns true or false depending on if cookie exists and
// if expiry date is not reached.
function is_cookie_valid(cookie_name, domain, cb_cookie_valid) {

}


// Delete cookies in the array. For testing purpose.
function delete_cookies(domain, cookies, cb_delete_done) {
    var cb_cookies = (function(cookies_to_delete, cb_delete_done) {
	    var delete_cookies_stats = {
		'total' : cookies_to_delete.length
	    };

	    return function(all_cookies) {
		console.log("APPU DEBUG: Total cookies: " + all_cookies.length);
		console.log("APPU DEBUG: Total cookies to be deleted: " + cookies_to_delete.length);
		var total_cookies_deleted = [];
		for (var i = 0; i < all_cookies.length; i++) {
		    if (cookies_to_delete.indexOf(all_cookies[i].name) == -1) {
			continue;
		    }

		    var protocol = "";
		    if (all_cookies[i].secure) {
			protocol = "https://";
		    }
		    else {
			protocol = "http://";
		    }
		    var url = protocol + all_cookies[i].domain + all_cookies[i].path;
		    chrome.cookies.remove({
			    "url": url, 
				"name": all_cookies[i].name},
			function(details) {
			    delete_cookies_stats.total -= 1;
			    if (delete_cookies_stats.total == 0 &&
				cb_delete_done) {
				cb_delete_done();
			    }
			});			
		    total_cookies_deleted.push(url);
		}
		console.log("APPU DEBUG: Deleted cookies number: " + total_cookies_deleted.length);
	    }
	})(cookies, cb_delete_done);
    
    chrome.cookies.getAll({
	    'domain' : domain,
		},
	cb_cookies);
}


// Delete all cookies except the cookies in this array. For testing purpose.
function delete_all_except_selected_cookies(domain, selected_cookies) {
    if (selected_cookies == undefined || selected_cookies.length == 0) {
	console.log("APPU DEBUG: selected_cookies array is not populated. Doing nothing.");
	return;
    }

    var cb_cookies = (function(selected_cookies) {
	    return function(all_cookies) {
		console.log("APPU DEBUG: Total cookies: " + all_cookies.length);
		console.log("APPU DEBUG: Total cookies to be deleted: " + 
			    (all_cookies.length - selected_cookies.length));

		var total_cookies_deleted = [];
		for (var i = 0; i < all_cookies.length; i++) {
		    if (selected_cookies.indexOf(all_cookies[i].name) != -1) {
			continue;
		    }

		    var protocol = "";
		    if (all_cookies[i].secure) {
			protocol = "https://";
		    }
		    else {
			protocol = "http://";
		    }
		    var url = protocol + all_cookies[i].domain + all_cookies[i].path;
		    chrome.cookies.remove({
			    "url": url, 
				"name": all_cookies[i].name});			
		    total_cookies_deleted.push(url);
		}
		console.log("APPU DEBUG: Deleted cookies number: " + total_cookies_deleted.length);
	    }
	})(selected_cookies);
    
    chrome.cookies.getAll({
	    'domain' : domain,
		},
	cb_cookies);
}


// Test function to delete all cookies except SUSPECTED account cookies
function delete_all_except_suspected_account_cookies(domain) {
    chrome.cookies.getAll({
	    'domain' : domain,
		},
	function(all_cookies) {
		var cookies_to_delete = [];
		var cs = pii_vault.aggregate_data.session_cookie_store[domain];
		for (var i = 0; i < all_cookies.length; i++) {
		    var cookie_name = all_cookies[i].name;
		    var cookie_domain = all_cookies[i].domain;
		    var cookie_path = all_cookies[i].path;
		    var cookie_protocol = (all_cookies[i].secure) ? "https://" : "http://";
		    var cookie_key = cookie_protocol + cookie_domain + cookie_path + ":" + cookie_name;
		    if (cookie_key in cs.cookies &&
			(cs.cookies[cookie_key].cookie_class == 'during' ||
			 cs.cookies[cookie_key].is_part_of_account_cookieset == true)) {
			continue;
		    }
		    cookies_to_delete.push(cookie_name);
		}
		delete_cookies(domain, cookies_to_delete);
	});
}


// Test function to clear all cookies
function delete_all_cookies(domain, cb_delete_done) {
    chrome.cookies.getAll({
	    'domain' : domain,
		},
	function(all_cookies) {
		var cookies_to_delete = [];
		for (var i = 0; i < all_cookies.length; i++) {
		    var cookie_name = all_cookies[i].name;
		    cookies_to_delete.push(cookie_name);
		}
		delete_cookies(domain, cookies_to_delete, cb_delete_done);
	});
}


// This means that a password element was detected on the page.
// So the user will probably attempt to login to the site.
// Record the current set of cookies to see what new cookies are
// created.
// Things to take care of:
// 1. What if the site simply overwrites an existing cookie 
//    instead of creating a new one? How often does that happen?
// 2. If the user is attempting to change the password, he will
//    already be logged in the site. In this case, he has to first
//    enter the old password. Appu has to avoid detecting that as
//    false login attempt.
//    Second, when he enters a new password, there will be two
//    password boxes. Appu has to detect that case as well.
// 3. If the account asks for other sensitive information
//    like CVV, CVV2, CVVC then that will be in a password box as well.
//    Appu should detect that case as well.
// 4. In some cases, even if you are logged into a site, it will 
//    still ask you for password to access sensitive information.
//    For example, if you have entered a credit card on Facebook,
//    and even if you are logged into facebook, it will still
//    ask you to enter password to access that information.
//    (perhaps its a wise choice considering how many security
//     holes were detected in FB recently as well as number of
//     apps that can access your profile).
//    Appu should detect such cases as well.
function record_prelogin_cookies(username, domain) {
    var cb_cookies = (function(username, domain) {
	    return function(all_cookies) {
		pre_login_cookies[domain] = {};
		pre_login_cookies[domain].cookies = {};
		pre_login_cookies[domain].username = username;
		for (var i = 0; i < all_cookies.length; i++) {
		    var hashed_cookie_val = sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(all_cookies[i].value));
		    var cookie_name = all_cookies[i].name;
		    var cookie_domain = all_cookies[i].domain;
		    var cookie_path = all_cookies[i].path;
		    var cookie_protocol = (all_cookies[i].secure) ? "https://" : "http://";
		    var cookie_key = cookie_protocol + cookie_domain + cookie_path + ":" + cookie_name;
		    pre_login_cookies[domain].cookies[cookie_key] = hashed_cookie_val;
		}
	    }
	})(username, domain);

    get_all_cookies(domain, cb_cookies);
}


// After the successful login, detects which cookies have been set.
function detect_login_cookies(domain, cb_after_login_cookie_detection) {
    var cb_cookies = (function(domain, cb_after_login_cookie_detection) {
	    return function(all_cookies) {
		console.log("APPU DEBUG: Detecting login cookies for: " + domain);
		var login_state_cookies = {};
		if (domain in pre_login_cookies) {
		    login_state_cookies.username = pre_login_cookies[domain].username;
		} else {
		    login_state_cookies.username = "";
		}
		login_state_cookies.cookies = {};

		for (var i = 0; i < all_cookies.length; i++) {
		    // Following is not necessarily true.
		    // For e.g. "github.com" does not set
		    // their account-cookies to "https://.github.com" but
		    // rather "https://github.com"
		    //   if (all_cookies[i].domain[0] != '.') {
		    //  	continue;
		    //   }

		    var cookie_http_only = all_cookies[i].httpOnly;
		    var cookie_secure = all_cookies[i].secure;
		    var cookie_name = all_cookies[i].name;
		    var cookie_domain = all_cookies[i].domain;
		    var cookie_path = all_cookies[i].path;
		    var cookie_protocol = (all_cookies[i].secure) ? "https://" : "http://";
		    var cookie_key = cookie_protocol + cookie_domain + cookie_path + ":" + cookie_name;

		    var hashed_cookie_val = sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(all_cookies[i].value));
		    if (cookie_key in pre_login_cookies[domain].cookies
			&& hashed_cookie_val == pre_login_cookies[domain].cookies[cookie_key]) {
			// This means that this cookie was either present before logging in 
			// and did not get a new value written to it during login process.
			// So probably *NOT* a login cookie 
			login_state_cookies.cookies[cookie_key] = {};
			login_state_cookies.cookies[cookie_key].cookie_class = 'before';
			login_state_cookies.cookies[cookie_key].hashed_cookie_val = hashed_cookie_val;
			login_state_cookies.cookies[cookie_key].value = all_cookies[i].value;
			login_state_cookies.cookies[cookie_key].is_part_of_account_cookieset = false;
			login_state_cookies.cookies[cookie_key].current_state = 'present';
			login_state_cookies.cookies[cookie_key].httpOnly = cookie_http_only;
			login_state_cookies.cookies[cookie_key].secure = cookie_secure;
		    }
		    else {
			// Cookie is newly created or got a new value written to it.
			// Hence likely a login cookie
			login_state_cookies.cookies[cookie_key] = {};
			login_state_cookies.cookies[cookie_key].cookie_class = 'during';
			login_state_cookies.cookies[cookie_key].is_part_of_account_cookieset = false;
			login_state_cookies.cookies[cookie_key].hashed_cookie_val = hashed_cookie_val;
			login_state_cookies.cookies[cookie_key].value = all_cookies[i].value;
			login_state_cookies.cookies[cookie_key].current_state = 'present';
			login_state_cookies.cookies[cookie_key].httpOnly = cookie_http_only;
			login_state_cookies.cookies[cookie_key].secure = cookie_secure;
		    }
		}

		// Empty the temporary cookie store.
		cleanup_prelogin_cookies(domain);
		pii_vault.aggregate_data.session_cookie_store[domain] = login_state_cookies;
		flush_session_cookie_store();
		if (cb_after_login_cookie_detection) {
		    cb_after_login_cookie_detection();
		}
	    }
	})(domain, cb_after_login_cookie_detection);

    get_all_cookies(domain, cb_cookies);
}


function cleanup_prelogin_cookies(domain) {
    var d = get_domain(domain);
    pre_login_cookies[d] = {};
}


function cleanup_session_cookie_store(domain) {
    var d = get_domain(domain);
    delete pii_vault.aggregate_data.session_cookie_store[d];
    pii_vault.aggregate_data.session_cookie_store[d] = {};
    flush_session_cookie_store();
}


function check_if_still_logged_in(domain) {
    var domain_cookies = pii_vault.aggregate_data.session_cookie_store[domain];
    var logged_in = false;
    for (c in domain_cookies.cookies) {
	if (c.cookie_class == 'during') {
	    logged_in = true;
	    break;
	}
    }
    if (logged_in == true) {
	// console.log("Here here: Domain: " + domain + ", Status: LOGGED-IN");
    }
    else {
	// console.log("Here here: Domain: " + domain + ", Status: LOGGED-OUT");
    }
    return logged_in;
}


function cookie_change_detected(change_info) {
    var domain = change_info.cookie.domain;
    if (domain[0] == '.') {
	domain = domain.slice(1, domain.length);
    }
    domain = get_domain(domain);

    var cookie_http_only = change_info.cookie.httpOnly;
    var cookie_secure = change_info.cookie.secure;
    var cookie_name = change_info.cookie.name;
    var cookie_domain = change_info.cookie.domain;
    var cookie_path = change_info.cookie.path;
    var cookie_protocol = (change_info.cookie.secure) ? "https://" : "http://";
    var cookie_key = cookie_protocol + cookie_domain + cookie_path + ":" + cookie_name;

    var pvadcs = pii_vault.aggregate_data.session_cookie_store;
    
    if (pvadcs[domain]) {
	if (change_info.removed) {
	    if ('cookies' in pvadcs[domain] && 
		cookie_key in pvadcs[domain].cookies) {
		var cookie_class = pvadcs[domain].cookies[cookie_key].cookie_class;
		var is_part_of_account_cookieset = pvadcs[domain].cookies[cookie_key].is_part_of_account_cookieset;
		// No need to do anything if its just a 'before' cookie
		if (cookie_class == 'during' || 
		    cookie_class == 'after'  ||
		    is_part_of_account_cookieset == true) {
		    // This cookie was added as a result of login process or after login process
		    // No need to do anything if its cause if 'overwrite', it will be recreated shortly.
		    if (change_info.cause == 'expired' || 
			 change_info.cause == 'expired_overwrite' ||
			 change_info.cause == 'explicit' ||
			 change_info.cause == 'overwrite' ||
			 change_info.cause == 'evicted') {
			
			if (cookie_class == 'during' ||
			    is_part_of_account_cookieset == true) {
			    pvadcs[domain].cookies[cookie_key].current_state = 'absent';
			}
			else {
			    // No need to store other cookie classes. Save space.
			    delete pvadcs[domain].cookies[cookie_key];
			}
			flush_session_cookie_store();
		    }
		    else {
			console.log("APPU Error: Cookie removed with unknown cause: " + change_info.cause);
		    }
		}
	    }
	}
	else {
	    if ('cookies' in pvadcs[domain] && 
		(change_info.cause == 'expired_overwrite' ||
		 change_info.cause == 'explicit' ||
		 change_info.cause == 'overwrite')) {
		// This cookie was not present during login
		var hashed_cookie_val = sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(change_info.cookie.value));

		if (cookie_key in pvadcs[domain].cookies &&
		    pvadcs[domain].cookies[cookie_key].cookie_class == 'during' ||
		    is_part_of_account_cookieset == true) {
			pvadcs[domain].cookies[cookie_key].current_state = 'changed';
			pvadcs[domain].cookies[cookie_key].hashed_cookie_val = hashed_cookie_val;
			pvadcs[domain].cookies[cookie_key].value = change_info.cookie.value;
		}
		else {
		    if (pvadcs[domain].cookies[cookie_key] == undefined) {
			pvadcs[domain].cookies[cookie_key] = {};
			pvadcs[domain].cookies[cookie_key].cookie_class = 'after';
			pvadcs[domain].cookies[cookie_key].is_part_of_account_cookieset = false;
			pvadcs[domain].cookies[cookie_key].secure = cookie_secure;
			pvadcs[domain].cookies[cookie_key].httpOnly = cookie_http_only;
		    }
		    else {
			pvadcs[domain].cookies[cookie_key].current_state = 'changed';
		    }

		    pvadcs[domain].cookies[cookie_key].hashed_cookie_val = hashed_cookie_val;
		    pvadcs[domain].cookies[cookie_key].value = change_info.cookie.value;
		}
		flush_session_cookie_store();
	    }
	}
    }
}


// Function that magically returns current username that 
// user has logged in on the site
function get_logged_in_username(domain) {
    var adcls = pii_vault.aggregate_data.current_loggedin_state;

    if (domain in adcls && adcls[domain].state == "logged-in") {
	var username_identifier = adcls[domain].username;
	var rc = get_idenfier_value(username_identifier);
	var username_length = rc[0];
	return [username_identifier, username_length];
    }
    var username = "";
    var username_identifier = get_username_identifier(domain, "", true);
    var username_length = username.length;

    return [username_identifier, username_length];
}


function delete_all_cookies_from_HTTP_request(details) {
    for (var i = 0; i < details.requestHeaders.length; i++) {
	if (details.requestHeaders[i].name == "Cookie") {
	    http_request_cookies = details.requestHeaders.splice(i, 1);
	    break;
	}
    }
    return {requestHeaders: details.requestHeaders};
}


function terminate_cookie_investigating_tab(tab_id) {
    console.log("APPU DEBUG: Closing cookie-investigation tab: " + tab_id);

    var http_request_cb = cookie_investigating_tabs[tab_id].http_request_cb;
    var http_response_cb = cookie_investigating_tabs[tab_id].http_response_cb;

    chrome.webRequest.onBeforeSendHeaders.removeListener(http_request_cb);
    chrome.webRequest.onHeadersReceived.removeListener(http_response_cb);

    delete cookie_investigating_tabs[tab_id];
    try {
	chrome.tabs.remove(tab_id);
    }
    catch(err) {
	console.log("APPU Error: Got error while closing tab-id(" + tab_id + "): " + err);
    }
}


// URL should be: "http://mail.google.com/mail/"
function test_site_with_no_cookies(url) {
    open_cookie_slave_tab(url, delete_all_cookies_from_HTTP_request);
}


function is_it_a_during_cookie(domain, cookie_name) {
    var cs = pii_vault.aggregate_data.session_cookie_store[domain];

    for (c in cs.cookies) {
	var curr_cookie_name = c.split(":").pop();
	if (cookie_name == curr_cookie_name && 
	    cs.cookies[c].cookie_class == 'during') {
	    return true;
	}
    }
    return false;
}


// This function deletes the SET COOKIE directive from HTTP responses to 
// tab that investigates cookies. This is useful in cases where servers
// detect that one of the account cookies is present and other is not.
// Then the server tries to delete all the other account cookies. (seems like
// security measure). This happens in the case of Facebook.
// Since we do not want this to interfere between already established user sessions,
// just ignore those commands. 
function delete_set_cookie_from_HTTP_response(details) {
    var final_rh = [];
    if ("responseHeaders" in details) {
	var rh = details.responseHeaders;
	//console.log("Here here: (delete_set_cookie_from_HTTP_response) RequestId: " + details.requestId);
	for (var i = 0; i < rh.length; i++) {
	    if (rh[i].name != "set-cookie") {
		final_rh.push(rh[i]);
	    }
	    else {
		var cookie_name = rh[i].value.match(/(.+?)=(.*)/)[1].trim();
		var domain = get_domain(details.url.split("/")[2]);
		if (!is_it_a_during_cookie(domain, cookie_name)) {
		    console.log("Here here: Letting set-cookie work for: " + cookie_name);
		    final_rh.push(rh[i]);
		}
		else {
		    console.log("Here here: BLOCKING set-cookie for: " + cookie_name);
		    final_rh.push(rh[i]);
		}
	    }
	}
    }
    return {responseHeaders: final_rh};
}


// Each cookie URL is of the form : https://.mail.google.com/mail:ABCD
// Each current URL is of the form : https://mail.google.com/mail/ere?565
// This function basically make a check to see if a particular cookie
// would get sent for a particular URL request. Returns T/F
function is_subdomain(cookie_domain, current_domain) {
    var protocol_matched = "yes";
    cod_protocol = cookie_domain.split(":")[0];
    cud_protocol = current_domain.split(":")[0];
    
    if (cod_protocol == "https" &&
	cod_protocol != cud_protocol) {
	return false;
    }

    cod_hostname = cookie_domain.split("/")[2];
    cud_hostname = current_domain.split("/")[2];

    if (cod_hostname != cud_hostname &&
	cod_hostname[0] != ".") {
	return false;
    }

    if (cod_hostname != cud_hostname &&
	cod_hostname[0] == ".") {
	cod_hostname = cod_hostname.slice(1);
	rev_cod_hostname = cod_hostname.split("").reverse().join("");
	rev_cud_hostname = cud_hostname.split("").reverse().join("");
	if (rev_cud_hostname.indexOf(rev_cod_hostname) != 0) {
	    return false;
	}
    }
    
    cod_path = cookie_domain.split("/").slice(3).join("/").split(":")[0];
    cud_path = current_domain.split("/").slice(3).join("/");

    if (cud_path.indexOf(cod_path) != 0) {
	return false;
    }

    return true;
}


// Returns cookies set during 'login' process.
// If bool_url_specific_cookies is not defined or is 'true', it will return all 'DURING' cookies.
// If bool_url_specific_cookies is 'false', it will return only cookies that will get sent
// when 'current_url' is requested by the browser.
function get_account_cookies(current_url, bool_url_specific_cookies) {
    var domain = get_domain(current_url.split("/")[2]);
    var cs = pii_vault.aggregate_data.session_cookie_store[domain];

    if (!cs) {
	return undefined;
    }

    var account_cookies = {};

    bool_url_specific_cookies = (bool_url_specific_cookies == undefined) ? false : bool_url_specific_cookies;

    for (c in cs.cookies) {
	if (cs.cookies[c].current_state == 'absent') {
	    // No point in testing for cookies that are not present in the 
	    // default cookie-store.
	    // (actually there is -- seems like if that cookie is generated later then
	    //  that creates problems in cookie investigation)
	    // continue;
	}
	if (cs.cookies[c].cookie_class == 'during' ||
	    cs.cookies[c].is_part_of_account_cookieset == true) {
	    if (bool_url_specific_cookies) {
		if (is_subdomain(c, current_url)) {
		    account_cookies[c] = {};
		    account_cookies[c].hashed_value = cs.cookies[c].hashed_cookie_val; 
		    account_cookies[c].value = cs.cookies[c].value; 
		}
	    }
	    else {
		account_cookies[c] = {};
		account_cookies[c].hashed_value = cs.cookies[c].hashed_cookie_val; 
		account_cookies[c].value = cs.cookies[c].value; 
	    }
	}
    }

    return account_cookies;
}


// Returns cookies that are NOT suspected to be account cookies.
function get_non_account_cookies(domain, suspected_account_cookies_array) {
    var cs = pii_vault.aggregate_data.session_cookie_store[domain];
    var non_account_cookies = {};

    for (c in cs.cookies) {
	if (cs.cookies[c].current_state == 'absent') {
	    // No point in testing for cookies that are not present in the 
	    // default cookie-store.
	    continue;
	}

	if (suspected_account_cookies_array != undefined &&
	    suspected_account_cookies_array.indexOf(c) != -1) {
	    continue;
	}

	if (cs.cookies[c].cookie_class != 'during' &&
	    (cs.cookies[c].is_part_of_account_cookieset == false ||
	     cs.cookies[c].is_part_of_account_cookieset == undefined)) {
	    non_account_cookies[c] = {};
	    non_account_cookies[c].hashed_value = cs.cookies[c].hashed_cookie_val; 
	    non_account_cookies[c].value = cs.cookies[c].value; 
	}
    }

    return non_account_cookies;
}


// Just like get_account_cookies() except you can also limit them to
// cookies present in cookie_names
function get_selective_account_cookies(current_url, cookie_names) {
    var domain = get_domain(current_url.split("/")[2]);
    var cs = pii_vault.aggregate_data.session_cookie_store[domain];
    var account_cookies = {};

    for (var i = 0; i < cookie_names.length; i++) {
	for (c in cs.cookies) {
	    if (cs.cookies[c].cookie_class == 'during' &&
		c.split(":")[2] == cookie_names[i]) {
		account_cookies[c] = {};
		account_cookies[c].hashed_value = cs.cookies[c].hashed_cookie_val; 
		account_cookies[c].value = cs.cookies[c].value; 
		break;
	    }
	}
    }
    
    return account_cookies;
}


// Like get_account_cookies() but does not limit cookies to 'DURING' cookies.
function get_domain_cookies(current_url) {
    var domain = get_domain(current_url.split("/")[2]);
    var cs = pii_vault.aggregate_data.session_cookie_store[domain];
    var account_cookies = {};

    for (c in cs.cookies) {
	if (cs.cookies[c].current_state == 'absent') {
	    // No point in testing for cookies that are not present in the 
	    // default cookie-store.
	    continue;
	}

	account_cookies[c] = {};
	account_cookies[c].hashed_value = cs.cookies[c].hashed_cookie_val; 
	account_cookies[c].value = cs.cookies[c].value; 
    }

    return account_cookies;
}


function check_usernames_for_cookie_investigation(tab_id) {
    var pi_usernames = get_all_values_of_types(["username", "name", "email"]);

    if (pi_usernames.length > 0) {
	var cit = cookie_investigating_tabs[tab_id];
	if (!cit) {
	    return;
	}
	if (cit.get_page_load_success()) {
	    console.log("APPU DEBUG: Page properly loaded. Sending command to " + 
			"detect usernames to cookie investigating tab");
	}
	else {
	    console.log("APPU Error: Page load timeout. Sending command to detect " + 
			"usernames to cookie investigating tab anyway");
	}

	chrome.tabs.sendMessage(tab_id, {
		type: "investigate_cookies",
		    command: "check_usernames",
		    usernames : pi_usernames
		    });
    }
    else {
	console.log("APPU DEBUG: Terminating cookie investigating tab " + 
		    "because no usernames to investigate from");
	report_fatal_error("No usernames present for cookie-investigation");
    }
}

// First processes results from current epoch.
// If the next state is not "st_terminate" then populates
// shadow_cookie_store correctly as per the requirements of current epoch
// then proceeds to test current epoch.
function process_last_epoch(tab_id, present_usernames, num_pwd_boxes) {
    var cit = cookie_investigating_tabs[tab_id];

    if (cit.pageload_timeout != undefined) {
	console.log("APPU DEBUG: Clearing reload-interval for: " + tab_id +
		    ", Interval-ID: " + cit.pageload_timeout);
	window.clearInterval(cit.pageload_timeout);
	cit.pageload_timeout = undefined;
    }

    cit.increment_page_reloads();

    var next_state = cit.web_request_fully_fetched(present_usernames, num_pwd_boxes);
    if (next_state != "st_terminate") {
	// Only send command to Cookie-Investigation-Tab after shadow_cookie_store for the
	// tab is properly populated. Hence, sending a callback function to 
	// shadow_cookie_store populating function.
	cit.populate_shadow_cookie_store((function(tab_id) {
		    return function() {
			var cit = cookie_investigating_tabs[tab_id];
			if (cit == undefined) {
			    // Probably some error occurred and tab is terminated
			    return;
			}

			console.log("APPU DEBUG: COOKIE INVESTIGATOR STATE(" + cit.get_state() + ")");

			// Increment the epoch-id, before refreshing the page.
			cit.increment_epoch_id();

			chrome.tabs.update(tab_id, {
				url: cit.url,
				    active: false,
				    highlighted: false,
				    });

			cit.reset_last_test_time();

			console.log("APPU DEBUG: Sent command to slave-tab for PAGE-REFRESH");

			cit.bool_state_in_progress = true;
			cit.num_pageload_timeouts = 0;
			cit.set_page_load_success(false);
			cit.content_script_started = false;

			var page_load_timeout_hndlrs = (function(tab_id) {
				var interval_hndlr_func = undefined;
				var tab_id = tab_id;
				
				function set_interval_hndlr_func(ihf) {
				    interval_hndlr_func = ihf;
				};
				
				function timeout_cb() {
				    var cit = cookie_investigating_tabs[tab_id];
				    if (cit == undefined) {
					// Probably some error occurred and tab is terminated
					console.log("APPU Error: Cookie investigating tab not defined " + 
						    "but interval function not cleared");
					window.clearInterval(interval_hndlr_func);
					return;
				    }
				    
				    if (cit.num_pageload_timeouts > MAX_NUM_PAGE_LOAD_TIMEOUT_LIMIT) {
					if (cit.content_script_started ||
					    cit.get_state() == "st_start_with_no_cookies") {
					    console.log("APPU DEBUG: Page load timeout(>3), " + 
							"content script started, username detection test never worked");
					    if (cit.pageload_timeout != undefined) {
						console.log("APPU DEBUG: Clearing reload-interval for: " + tab_id
							    + ", Interval-ID: " + cit.pageload_timeout);
						window.clearInterval(cit.pageload_timeout);
						cit.pageload_timeout = undefined;
					    }
					    if (cit.get_state() == "st_start_with_no_cookies") {
						cit.set_page_load_success(true);
						process_last_epoch(tab_id, false, undefined);
					    }
					    else {
						process_last_epoch(tab_id, undefined, undefined);
					    }
					}
					else {
					    if (cit.num_pageload_timeouts > 
						(MAX_NUM_PAGE_LOAD_TIMEOUT_LIMIT + 1)) {
						console.log("APPU Error: Number of page load timeout(" + 
							    cit.num_pageload_timeouts +
							    ") and no content script, " + 
							    "may be network error");
						cit.report_fatal_error("Page-load-timeout-max-no-content-script");
					    }
					    else {
						cit.num_pageload_timeouts += 1;
						var jsRunner = {'code': 'window.stop()'};
						chrome.tabs.executeScript(tab_id, jsRunner);
					    }
					}
				    }
				    else {
					// Just check if there is any username present.
					// If so, no need to wait for page to fully reload.
					if (cit.get_state() != "st_cookie_test_start" &&
					    cit.content_script_started) {
					    console.log("APPU DEBUG: Page load timeout, " + 
							"content script started, firing username detection test");
					    console.log("Here here: Calling check_usernames_for_cookie_investigation()");
					    check_usernames_for_cookie_investigation(tab_id);
					}
				    }
				    
				    cit.num_pageload_timeouts += 1;
				};
				
				return [set_interval_hndlr_func, 
					timeout_cb];
			    }(tab_id));

			var interval_func = window.setInterval(page_load_timeout_hndlrs[1], 
							       MAX_PAGE_LOAD_TIMEOUT_IN_SECONDS_LIMIT * 1000);
			page_load_timeout_hndlrs[0](interval_func);

			cit.pageload_timeout = interval_func;

// 			console.log("APPU DEBUG: Setting reload-interval for: " + tab_id 
// 				    + ", Interval-ID: " + cit.pageload_timeout);
		    }
		})(tab_id));
    }
}


// Open a tab to check if a cookie is an account cookie
function open_cookie_slave_tab(url, 
			       http_request_cb,
			       http_response_cb,
			       update_tab_id, 
			       init_cookie_investigation,
			       open_new_window) {
    // Just some link so that appu content script runs on it.
    // I am purposely running some different site on this page 
    // because if I run the actual URL that I am investigating
    // cookie-store might get courrupted (epoch-ID is not set yet).
    var default_url = 'http://live.com';
    var my_domain = get_domain(url.split("/")[2]);
    if (my_domain == "live.com") {
	default_url = 'http://google.com';
    }
   
    create_properties = { 
	url: default_url, 
	active: false 
    };

    //Create a new tab.
    chrome.tabs.create(create_properties, 
		       (function(url, 
				 http_request_cb,
				 http_response_cb,
				 update_tab_id, 
				 init_cookie_investigation,
				 open_new_window) {
			   return function slave_tab_callback(tab) {
			       var filter = {};

			       cookie_investigating_tabs[tab.id] = {};

			       if (http_request_cb) {
				   chrome.webRequest.onBeforeSendHeaders.addListener(http_request_cb, 
										     {
											 "tabId": tab.id,
											     "urls": ["<all_urls>"]
											     },
										     ["blocking", "requestHeaders"]);
				   cookie_investigating_tabs[tab.id].http_request_cb = http_request_cb;
			       }

			       if (http_response_cb) {
				   chrome.webRequest.onHeadersReceived.addListener(http_response_cb, {
					   "tabId": tab.id,
					       "urls": ["<all_urls>"]
					       },
				       ["blocking", "responseHeaders"]);
				   cookie_investigating_tabs[tab.id].http_response_cb = http_response_cb;
			       }

// 			       chrome.webRequest.onBeforeRequest.addListener(print_request_body, {
// 				       "tabId": tab.id,
// 					   "urls": ["<all_urls>"]
// 					   },
// 				   ["requestBody", "blocking"]);

// 			       chrome.webRequest.onBeforeRedirect.addListener(print_redirect_information, {
// 				       "tabId": tab.id,
// 					   "urls": ["<all_urls>"]
// 					   },
// 				   ["responseHeaders"]);


			       update_tab_id(tab.id);

			       console.log("------------");
			       console.log("APPU DEBUG: Starting cookie investigation for: " + url);
			       console.log("APPU DEBUG: Created a new tab to investigate cookies: " + tab.id);

			       init_cookie_investigation();

			       console.log("APPU DEBUG: COOKIE INVESTIGATOR STATE(" + 
					   cookie_investigating_tabs[tab.id].get_state() + ")");

			       // cookie_investigating_tabs[tab.id].print_cookie_array();
			       if (open_new_window && open_new_window == true) {
				   chrome.windows.create({
					   tabId: tab.id,
					       width: 400,
					       height: 600,
					       });
			       }
			   }
		       })(url, 
			  http_request_cb,
			  http_response_cb,
			  update_tab_id, 
			  init_cookie_investigation,
			  open_new_window));
}

// Returns a cookie-investigator that maintains all the state and drives the
// cookie investigation.
// Perhaps this is better done as a class, but for now, its a closure.
//
// Various states possible during cookie-investigation:
// 1. "st_testing"                             : Just simple testing state. You can pass your own
//                                               cookieset combinations to it and it will test them
//                                               and print the results.
//
// 2. "st_cookie_test_start"                   : Loading some default webpage so that Appu content-script runs and
//                                               accepts commands.
//
// 3. "st_verification_epoch"                  : Reload site page. Start with shadow_cookie_store that is
//                                               exact copy of default_cookie_store.
//                                               Test the page for usernames after page load.
//                                               If usernames found, user is logged-in (EXPECTED)
//                                               Otherwise:
//                                                   1. We do not have this user's username in PI database.
//                                                   2. User initiated logout in the middle of our testing.
//                                                      (Confirm this using other methods like user-click
//                                                       monitoring OR if URL had "logout" somewhere)
//                                                   3. Finally, our testing messed up with user-session. 
//                                               At runtime, we can't distinguish between 1, 2 and 3.
//                                               So assume the worse(#3) and STOP TESTING this site further.
//
// 4. "st_start_with_no_cookies"               : Reload the site page. Start with empty shadow-cookie-store.
//                                               After reloading site page, test if usernames are found. 
//                                               If no usernames are found, that is the expected behavior.
//                                               Otherwise, critical error in Appu code since it is letting
//                                               default_cookie_store cookies to pass. STOP TESTING.
//
// 5. "st_suspected_cookies_pass_test"         : Reload site page. Start with shadow_cookie_store that is 
//                                               populated with only 'DURING' cookies as detected by Appu.
//                                               Test the page for usernames after page load.
//                                               If usernames found, user is logged-in (EXPECTED)
//                                               Otherwise it means we have not detected 'DURING' 
//                                               cookies properly. STOP TESTING
//
// 6. "st_suspected_cookies_block_test"        : Reload site page. Start with shadow_cookie_store that is 
//                                               populated without any 'DURING' cookies as detected by Appu.
//                                               Test the page for usernames after page load.
//                                               If no usernames found, user is logged-out (EXPECTED)
//                                               Otherwise, it means we have not detected 'DURING' 
//                                               cookies properly. STOP TESTING.
//
//  Both 'st_suspected_cookies_pass_test' & 'st_suspected_cookies_block_test' will confirm that actual "ACCOUNT-COOKIES"
//  are subset of 'DURING' cookies *ONLY*. This is expected, otherwise we are detecting 'DURING' cookies 
//  incorrectly.
//
// 7. "st_GUB_cookiesets_block_DISABLED_and_NONDURING" : For all the untested cookiesets at the moment, calculate 
// 8. "st_GUB_cookiesets_block_DISABLED"                 the set of cookiesets that are greatest upper bounds(GUB). 
//                                                    That is, all the existing untested cookiesets are subsets of
//                                                    exactly one of the GUBs. Once all the GUBs are found, 
//                                                    systematically test each by blocking the cookies. 
//                                                    If user is found to be logged-in even after
//                                                    blocking a particular GUB, then we are saved from the 
//                                                    effort of testing all the subsets of that GUB since user 
//                                                    will still be logged-in for those subsets. If we find that 
//                                                    the user is logged-in even after blocking each
//                                                    GUB then we are done. No need to continue testing any more 
//                                                    and we have exhaustively verified all the cookiesets.
//                                                    However, if we find that the user is logged-out for at least 
//                                                    one GUB then we need to find subset of that GUB to find 
//                                                    a stricter cookiesets subset.
//                                                    Obviously, a very first GUB is all '1's that is block all 
//                                                    cookies and 
//                                                    it is tested in the "state st_suspected_cookies_block_test".
//                                                    Also, for most of the web applications which have 
//                                                    only single-cookies as account cookies, the number 
//                                                    of GUBs would be equal to one at the end of
//                                                    testing all single cookies and most likely we will find 
//                                                    that blocking that single GUB would not affect user 
//                                                    session and our testing will stop there.
//                                                    This test is conducted after each cookieset block test epoch.
//
// 9. "st_LLB_cookiesets_block_DISABLED_and_NONDURING" : Cookiesets are created by systematically omitting some of the
// 10. "st_LLB_cookiesets_block_DISABLED"              : 'DURING' cookies. So, if we have detected 'N' 'DURING' cookies,
//                                                    then there are '2^N - 1' cookie sets. Here '1' is subtracted for
//                                                    for all cookies 
//                                                    (already tested in "st_suspected_cookies_block_test").
//                                                    Reload site page. Start with shadow_cookie_store that is 
//                                                    populated with default_cookie_store except cookies 
//                                                    from cookieset 
//                                                    currently getting tested. To avoid explosion in cookiesets to be
//                                                    tested, do max-random-attempts.
//                                                    Test the page for usernames after page load.
//                                                    If no usernames found, user is logged-out and mark that 
//                                                    cookieset as 'ACCOUNT-COOKIE'.
//                                                    Otherwise, it means that that cookieset is not 
//                                                    'ACCOUNT-COOKIE' OR
//                                                    other cookies are sufficient to regenerate this cookie.
//                                                    This test is done only for sites like 'Google' and might not be 
//                                                    performed always.
//
// 11. "st_expand_LLB_suspected_account_cookies"    : Add more cookies to 'DURING' set and see if user is logged-in.
//                                                    Remember that their class is not actually changed to 'during'.
// 12. "st_expand_GUB_suspected_account_cookies"    : Just like GUB phase for normal suspected cookies, this is a
//                                                    GUB phase for expand-state. This is required for sites like
//                                                    BankOfAmerica where expand-state goes to dropping more than
//                                                    one cookie in non-during cookies. Since number of non-during 
//                                                    cookies for BoA is between 40 to 50, the number of cookiesets
//                                                    to be tested in that round goes to something like 780-1300.
//
// 13. "st_terminate"                               : Everything is done or error occurred. So just terminate.
//
//
function cookie_investigator(account_cookies, 
			     url, 
			     config_cookiesets, 
			     config_forceshut,
			     config_skip_initial_states,
			     config_start_params,
			     config_do_not_use_shadow_cookie_store,
			     config_known_results_for_cookiesets) {
    // Metadata
    var my_url = url;
    var my_domain = get_domain(my_url.split("/")[2]);

    var orig_browser_cookie_store = {};
    if (config_do_not_use_shadow_cookie_store) {
	get_browser_cookie_store_copy(my_domain, orig_browser_cookie_store);
	// For now, also store on disk in case something bad happens.
	(function(backup_store){
	    var data = {};
	    data["CookieStore:" + my_domain] = backup_store;
	    write_to_local_storage(data);
	})(orig_browser_cookie_store);
    }

    // ******************  START --------- COOKIES & COOKIESETS VARIABLES ------
    //
    // Sets to keep track of suspected and non-suspected cookies
    var suspected_account_cookies_array = Object.keys(account_cookies);
    var tot_cookies = suspected_account_cookies_array.length;

    var non_suspected_cookies = get_non_account_cookies(my_domain, suspected_account_cookies_array);
    var non_suspected_account_cookies_array = Object.keys(non_suspected_cookies);
    var tot_ns_cookies = non_suspected_account_cookies_array.length;

    // All cookiesets arrays to classify each cookieset into one of the following:
    // 1. s-a-LLB:   Lowest Lower Bound account-cookiesets suspected cookies poset
    // 2. s-na-LLB:  Lowest Lower Bound non-account-cookiesets suspected cookies poset
    // 3. s-a-GUB:   Greatest Upper Bound account-cookiesets suspected cookies poset
    // 4. s-na-GUB:  Greatest Upper Bound non-account-cookiesets suspected cookies poset
    // 5. ns-na-LLB: Lowest Lower Bound non-account-cookiesets non-suspected cookies poset
    // 6. ns-a-GUB:  Greatest Upper Bound account-cookiesets non-suspected cookies poset

    // 1. s-a-LLB (pruning optimization): Sets of cookies for which user's session is logged-out if
    // they are absent. This is a strict set. That is each set
    // is not reducible further to a subset.
    var s_a_LLB_cookiesets_array = [];
    var s_a_LLB_decimal_cookiesets = [];

    // 4. s-na-GUB (pruning optimization): Super-Sets of cookies for which user's session is logged-in if
    // they are absent
    var s_na_GUB_cookiesets_array = [];
    var s_na_GUB_decimal_cookiesets = [];

    // 2. s-na-LLB (retesting optimization): These are stored anyway to avoid testing for them next time if
    // the testing is split across multiple sessions.
    var s_na_LLB_cookiesets_array = [];
    var s_na_LLB_decimal_cookiesets = [];

    // 3. s-a-GUB (retesting optimization): Super-Sets of cookies for which user's session is logged-out if
    // they are absent
    var s_a_GUB_cookiesets_array = [];
    var s_a_GUB_decimal_cookiesets = [];

    // 5. ns-na-LLB (retesting optimization): This will be used to avoid testing for same cookies next time around.
    // However this should be used in conjunction with disabled_cookies that
    // caused expand state to be entered.
    var ns_na_LLB_cookiesets_array = [];
    var ns_na_LLB_decimal_cookiesets = [];

    // 6. ns-a-GUB (retesting optimization): This will be used to avoid testing for same cookies next time around.
    // However this should be used in conjunction with disabled_cookies that
    // caused expand state to be entered.
    var ns_a_GUB_cookiesets_array = [];
    var ns_a_GUB_decimal_cookiesets = [];

    // These cookies were discovered last time expand-state was entered.
    // This avoids entering into expand state again and again across multiple
    //  invocations.
    var expand_state_discovered_cookies = [];

    // Contains inverse of members in s_a_LLB_cookiesets_array
    // Currently not used for anything
    var verified_strict_login_cookiesets_array = [];

    // Set of cookies that are necessary to access certain parts
    // of a website but not necessary to make the user-session invalid.
    // For e.g. cookies to access Facebook's credit card information.
    // Currently not used for anything.
    var verified_restricted_cookiesets_array = [];
    // Generate "s_a_LLB_decimal_cookiesets" from
    // "s_a_LLB_cookiesets_array"
    // need to give "suspected_account_cookies_array"

    // Functions that generate decimal cookiesets from arrays
    function generate_s_a_LLB_decimal_cookiesets() {
	s_a_LLB_decimal_cookiesets = [];

	for (var i = 0; i < s_a_LLB_cookiesets_array.length; i++) {
	    rc = add_to_set(s_a_LLB_cookiesets_array[i], 
			    undefined, 
			    s_a_LLB_decimal_cookiesets, 
			    suspected_account_cookies_array,
			    undefined);
	}
    }

    // Generate "s_na_LLB_decimal_cookiesets" from
    // "s_na_LLB_cookiesets_array"
    // need to give "suspected_account_cookies_array"
    function generate_s_na_LLB_decimal_cookiesets() {
	s_na_LLB_decimal_cookiesets = [];

	for (var i = 0; i < s_na_LLB_cookiesets_array.length; i++) {
	    rc = add_to_set(s_na_LLB_cookiesets_array[i], 
			    undefined, 
			    s_na_LLB_decimal_cookiesets, 
			    suspected_account_cookies_array,
			    undefined);
	}
    }

    // Generate "s_a_GUB_decimal_cookiesets" from
    // "s_a_GUB_cookiesets_array"
    // need to give "suspected_account_cookies_array"
    function generate_s_a_GUB_decimal_cookiesets() {
	s_a_GUB_decimal_cookiesets = [];

	for (var i = 0; i < s_a_GUB_cookiesets_array.length; i++) {
	    rc = add_to_set(s_a_GUB_cookiesets_array[i], 
			    undefined, 
			    s_a_GUB_decimal_cookiesets, 
			    suspected_account_cookies_array,
			    undefined);
	}
    }

    // Generate "s_na_GUB_decimal_cookiesets" from
    // "s_na_GUB_cookiesets_array"
    // need to give "suspected_account_cookies_array"
    function generate_s_na_GUB_decimal_cookiesets() {
	s_na_GUB_decimal_cookiesets = [];

	for (var i = 0; i < s_na_GUB_cookiesets_array.length; i++) {
	    rc = add_to_set(s_na_GUB_cookiesets_array[i], 
			    undefined, 
			    s_na_GUB_decimal_cookiesets, 
			    suspected_account_cookies_array,
			    undefined);
	}
    }

    // Generate "ns_na_LLB_decimal_cookiesets" 
    // from "ns_na_LLB_cookiesets_array"
    // need to also give all "non_suspected_account_cookies_array"
    function generate_ns_na_LLB_decimal_cookiesets() {
	ns_na_LLB_decimal_cookiesets = [];
	var dca = undefined;
	var edca = undefined;

	for (var i = 0; i < ns_na_LLB_cookiesets_array.length; i++) {
	    dca = ns_na_LLB_cookiesets_array[i][0].slice(0);
	    edca = ns_na_LLB_cookiesets_array[i][1].slice(0);

	    var rc1 = convert_cookie_array_to_binary_cookieset(dca, suspected_account_cookies_array);
	    var rc2 = convert_cookie_array_to_binary_cookieset(edca, non_suspected_account_cookies_array);

	    ns_na_LLB_decimal_cookiesets.push([rc1.decimal_cookieset, 
					       rc2.decimal_cookieset]);
	}
    }


    // Generate "ns_a_GUB_decimal_cookiesets" 
    // from "ns_a_GUB_cookiesets_array"
    // need to also give all "non_suspected_account_cookies_array"
    function generate_ns_a_GUB_decimal_cookiesets() {
	ns_a_GUB_decimal_cookiesets = [];
	var dca = undefined;
	var edca = undefined;

	for (var i = 0; i < ns_a_GUB_cookiesets_array.length; i++) {
	    dca = ns_a_GUB_cookiesets_array[i][0].slice(0);
	    edca = ns_a_GUB_cookiesets_array[i][1].slice(0);

	    var rc1 = convert_cookie_array_to_binary_cookieset(dca, suspected_account_cookies_array);
	    var rc2 = convert_cookie_array_to_binary_cookieset(edca, non_suspected_account_cookies_array);

	    ns_a_GUB_decimal_cookiesets.push([rc1.decimal_cookieset, 
					      rc2.decimal_cookieset]);
	}
    }

    function adjust_cookiesets_array(acct_cookies, old_ca) {
	var new_ca = [];
	var dca = undefined;
	var edca = undefined;
	
	for (var i = 0; i < old_ca.length; i++) {
	    dca = old_ca[i][0].slice(0);
	    edca = old_ca[i][1].slice(0);
	    
	    for (var j = 0; j < acct_cookies.length; j++) {
		var c = acct_cookies[j];
		var delete_index = edca.indexOf(c);
		if (delete_index != -1) {
		    edca.splice(delete_index, 1);
		    if (edca.length > 0) {
			if (dca.indexOf(c) == -1) {
			    dca.push(c);
			    var ca = [dca, edca];
			    new_ca.push(ca);
			}
		    }
		}
	    }
	}
	return new_ca;
    }

    //
    // ******************  END --------- COOKIES & COOKIESETS VARIABLES ------



    // ******************  START --------- INTERNAL STATS ------
    // Cookiesets stats
    var tot_cookiesets_tested_overall = 0;
    var tot_gub_cookiesets_tested_overall = 0;
    var tot_cookiesets_tested = 0;
    var tot_cookiesets_tested_this_round = 0;

    // When was the last cookieset discovered that we actually tested?
    var last_cookieset_test_time = undefined;
    // Time spent in just iterating over cookiesets that get optimized
    // out due to pruning s-na-GUB, s-a-LLB, ns-na-GUB
    var tot_time_since_last_lo_change = 0;

    // Page reload stats
    var tot_page_reloads = 0;
    var tot_page_reloads_overall = 0;
    var tot_page_reloads_since_last_lo_change = 0;

    // Time stats
    var ci_start_time = new Date();
    var tot_time_taken = 0;

    // Total number of attempts
    var tot_attempts = 1;

    // Bandwidth consumed
    var tot_bytes_sent = 0;
    var tot_bytes_recvd = 0;
    var bytes_sent_this_attempt = 0;
    var bytes_recvd_this_attempt = 0;

    // For counting efficiency from LLB/GUB optimizations
    var cookiesets_optimization_stats = {
	num_llb_subset_in_account_cookiesets : 0,
	num_llb_subset_in_account_super_cookiesets : 0,
	num_llb_superset_in_non_account_cookiesets : 0,
	num_llb_superset_in_non_account_super_cookiesets : 0,

	num_gub_subset_in_account_cookiesets : 0,
	num_gub_subset_in_account_super_cookiesets : 0,
	num_gub_superset_in_non_account_cookiesets : 0,
	num_gub_superset_in_non_account_super_cookiesets : 0,

	tot_page_reloads_naive : 0,
    };

    // We cannot confidently say anything about some cookiesets because
    // page was not loaded properly as well as no usernames were detected.
    // Following variable counts number of such cookiesets.
    var tot_inconclusive_cookiesets_overall = 0;

    // Total number of expand state cookiesets tested.
    var tot_expand_state_cookiesets_tested_overall = 0;

    // Total number of times expand-state entered.
    var tot_expand_state_entered = 0;

    // ******************  END --------- INTERNAL STATS ------



    // ******************  START --------- STATE MACHINE VARIABLES ------
    //
    //
    var enabled_cookies_array = [];
    var disabled_cookies = [];
    var expand_state_disabled_cookies = [];

    // Following are no longer used for normal investigation.
    // Still these are needed for "st_testing" state.
    var binary_cookiesets = [];
    var decimal_cookiesets = [];

    // Number of cookies to be dropped in each cookiesets-test BIG epoch
    // This variable goes from 1 to 'N-1' where 'N' are suspected 
    // account cookies.
    var num_cookies_drop_for_round = 1;

    // Number of cookies to be passed in each GUB cookiesets-test
    // This variable goes from 1 to 'N-1' where 'N' are suspected 
    // account cookies.
    var num_cookies_pass_for_round = 1;

    var curr_binary_cs = undefined;
    var curr_decimal_cs = undefined;
    var curr_gub_binary_cs = undefined;
    var curr_gub_decimal_cs = undefined;

    var next_binary_cs = undefined;
    var next_decimal_cs = undefined;
    var next_gub_binary_cs = undefined;
    var next_gub_decimal_cs = undefined;

    // For expand suspected account cookies state.
    var curr_expand_state_binary_cs = undefined;
    var curr_expand_state_decimal_cs = undefined;
    var curr_expand_state_gub_binary_cs = undefined;
    var curr_expand_state_gub_decimal_cs = undefined;
    var expand_state_num_cookies_drop_for_round = 1;
    var expand_state_num_cookies_pass_for_round = 1;

    // After blocking during-cookies in state "st_suspected_cookies_block_test", if there is pwd box
    // then set following bool_pwd_box_present_st_suspected_cookies_block_test to true.
    var bool_pwd_box_should_be_present = undefined;
    var bool_is_cookie_testing_done = false;

    // Sets it when Epoch-ID 1 executes to give a rough idea of
    // page load time.
    var total_verification_page_loads = 0;
    var page_load_time = 0;

    // Forceful shutting of cookie testing tab after time (in minutes)
    var limit_forceful_shutdown = 5;

    var my_tab_id = undefined;

    var verification_are_usernames_present = undefined;
    var verification_bool_pwd_box_present = undefined;

    var last_non_verification_state = "";
    var last_non_expand_state = "";
    // At the start, to activate Appu content script, we need to load some webpage successfully
    // This state does that.
    var my_state = "st_cookie_test_start";
    var bool_switch_to_testing = false;

    // This stores all the cookies for a domain at the start.
    // After that, any HTTP GET done in that tab sends cookies.
    // as per this cookie store.
    // All HTTP Responses with 'set-cookie' will operate on this
    // store as well.
    // At the start of each new WebRequest (Not HTTP Get request), it
    // will be repopulated from the basic cookie-store.
    var shadow_cookie_store = {};
    var original_shadow_cookie_store = {};

    var current_cookiesets_test_index = -1;
    var has_error_occurred = false;
    var shut_tab_forcefully = undefined;

    // Following is to correlate epoch-IDs with request-IDs.
    // This way late responses would not overwrite current Epoch's
    // shadow cookie table.
    // (This was happening a lot in case of Google Calendar giving me wrong
    //  results)
    var epoch_id = 0;
    var req_epch_table = {};

    // To store results until verification_epoch gives good to go
    var pending_are_usernames_present = undefined;
    var pending_disabled_cookies = undefined;
    var pending_enabled_cookies_array = undefined;
    var pending_curr_decimal_cs = undefined;
    var pending_bool_pwd_box_present = undefined;
    var pending_result_significance = undefined;
    var pending_bool_pwd_box_present_first_verification = undefined;
    var pending_bool_pwd_box_present_suspected_block = undefined;

    // To judge whether page load timeouts are due to network
    // problems or abset cookies
    var num_verification_page_load_attempts = 0;
    var num_verification_page_load_success = 0;
    var page_load_success = false;

    var bool_expand_state_initialized = false;

    // For detecting usernames
    var top_three_elements_with_usernames = undefined;

    // ******************  END --------- STATE MACHINE VARIABLES ------    

    console.log("APPU DEBUG: Starting cookie investigation for(" + my_domain + "): " + ci_start_time);

    if (config_forceshut != undefined) {
	limit_forceful_shutdown = config_forceshut;
    }

    if (config_start_params != undefined) {
	if (config_start_params.starting_state == "st_testing") {
	    if (config_start_params.cookies_array != undefined &&
		config_start_params.account_cookies_array != undefined) {
		bool_switch_to_testing = true;
		var cookies_pass_array = config_start_params.cookies_array;
		
		suspected_account_cookies_array = config_start_params.account_cookies_array;
		tot_cookies = suspected_account_cookies_array.length;
		
		for (var i = 0; i < cookies_pass_array.length; i++) {
		    var rc = convert_cookie_array_to_binary_cookieset(cookies_pass_array[i], 
								      suspected_account_cookies_array, 
								      true);
		    binary_cookiesets.push(rc.binary_cookieset);
		    decimal_cookiesets.push(rc.decimal_cookieset);
		}
		
		console.log("APPU DEBUG: Number of generated cookie-sets: " + binary_cookiesets.length);
	    }
	    else {
		console.log("APPU Error: cookie_investigator(): In correct arguments for starting 'st_testing'");
		return -1;
	    }
	}
	else if (config_start_params.pending_cookie_investigation_state != undefined) {
	    var url_wo_paramters = my_url.replace(/\?.*/,'');
	    var pcs = config_start_params.pending_cookie_investigation_state["Cookie Investigation State:" + url_wo_paramters];

	    if (pcs != undefined) {
		// Do not move this from here. This has to be first.
		// So that the already tested cookisets are generated properly.
		if (pcs.expand_state_discovered_cookies != undefined) {
		    expand_state_discovered_cookies = JSON.parse(pcs.expand_state_discovered_cookies);
		    console.log("APPU DEBUG: Restoring previously discovered expand-state cookies: " +
				JSON.stringify(expand_state_discovered_cookies));

		    var cs = pii_vault.aggregate_data.session_cookie_store[my_domain];		    
		    for (var p = 0; p < expand_state_discovered_cookies.length; p++) {
			var cookie_key = expand_state_discovered_cookies[p];

			if (suspected_account_cookies_array.indexOf(cookie_key) == -1) {
			    if (cookie_key in cs.cookies) {
				cs.cookies[cookie_key].is_part_of_account_cookieset = true;
			    }
			    else {
				console.log("Here here: Previously detected cookie in expand-state no longer present: " +
					    cookie_key);
			    }
			    console.log("APPU DEBUG: Previously discovered expand-state cookie(" + cookie_key +
					") was not present in the " +
					"suspected-account-cookies array. Adding it.");
			    suspected_account_cookies_array.push(cookie_key);
			    tot_cookies++;
			    var index_to_delete = non_suspected_account_cookies_array.indexOf(cookie_key);
			    if (index_to_delete != -1) {
				non_suspected_account_cookies_array.splice(index_to_delete, 1);		
				tot_ns_cookies -= 1;
			    }
			}
		    }
		    flush_aggregate_data();
		}


		var curr_suspected_cookies = suspected_account_cookies_array.slice(0).sort();
		var past_suspected_cookies = pcs.suspected_account_cookies_array.slice(0).sort();

		if (curr_suspected_cookies.compare(past_suspected_cookies)) {
		    console.log("APPU DEBUG: Looks like suspected_account_cookies_array is unchanged");
		    if (pcs.num_cookies_drop_for_round &&
			pcs.num_cookies_pass_for_round) {
			num_cookies_drop_for_round = pcs.num_cookies_drop_for_round;
			num_cookies_pass_for_round = pcs.num_cookies_pass_for_round;
			console.log("APPU DEBUG: Restored num_cookies_drop_for_round to: " + num_cookies_drop_for_round);
			console.log("APPU DEBUG: Restored num_cookies_pass_for_round to: " + num_cookies_pass_for_round);
		    }

		    var pcs_next_binary_cs = undefined;
		    var pcs_curr_binary_cs = undefined;
		    var pcs_next_gub_binary_cs = undefined;
		    var pcs_curr_gub_binary_cs = undefined;

		    if (pcs.next_llb_cookieset_array != undefined) {
			if (pcs.next_llb_cookieset_array.length == num_cookies_drop_for_round) {
			    pcs_next_binary_cs = convert_cookie_array_to_binary_cookieset(pcs.next_llb_cookieset_array, 
											  suspected_account_cookies_array);
			    pcs_next_binary_cs = pcs_next_binary_cs.binary_cookieset;

			    {
				// Delete this entire block
				var nba = convert_binary_cookieset_to_cookie_array(pcs_next_binary_cs, 
										   suspected_account_cookies_array);
				console.log("Here here: Delete me, verification check, nba: " + JSON.stringify(nba));
				if (nba.sort().compare(pcs.next_llb_cookieset_array.sort())) {
				    console.log("Here here: Delete me, pcs_next_binary_cs is correct");
				}
				else {
				    console.log("Here here: Delete me, ERROR pcs_next_binary_cs is INcorrect");
				}
			    }
			}
			else {
			    console.log("APPU DEBUG: Not generating pcs_next_binary_cs because length mismatch" +
					", num_drop = " + num_cookies_drop_for_round + 
					", pcs.next_llb_cookieset_array.length = " + pcs.next_llb_cookieset_array.length);
			}
		    }

		    if (pcs.curr_llb_cookieset_array != undefined) {
			if (pcs.curr_llb_cookieset_array.length == num_cookies_drop_for_round) {
			    pcs_curr_binary_cs = convert_cookie_array_to_binary_cookieset(pcs.curr_llb_cookieset_array, 
											  suspected_account_cookies_array);
			    pcs_curr_binary_cs = pcs_curr_binary_cs.binary_cookieset;
			    {
				// Delete this entire block
				var cba = convert_binary_cookieset_to_cookie_array(pcs_curr_binary_cs, 
										   suspected_account_cookies_array);
				console.log("Here here: Delete me, verification check, cba: " + JSON.stringify(cba));
				if (cba.sort().compare(pcs.curr_llb_cookieset_array.sort())) {
				    console.log("Here here: Delete me, pcs_curr_binary_cs is correct");
				}
				else {
				    console.log("Here here: Delete me, ERROR pcs_curr_binary_cs is INcorrect");
				}
			    }
			}
			else {
			    console.log("APPU DEBUG: Not generating pcs_curr_binary_cs because length mismatch" +
					", num_drop = " + num_cookies_drop_for_round + 
					", pcs.curr_llb_cookieset_array.length = " + pcs.curr_llb_cookieset_array.length);
			}
		    }

		    if (pcs.next_gub_cookieset_array != undefined) {
			if ((tot_cookies - pcs.next_gub_cookieset_array.length) == num_cookies_pass_for_round) {
			    pcs_next_gub_binary_cs = convert_cookie_array_to_binary_cookieset(pcs.next_gub_cookieset_array, 
											      suspected_account_cookies_array);
			    pcs_next_gub_binary_cs = pcs_next_gub_binary_cs.binary_cookieset;
			    {
				// Delete this entire block
				var ngba = convert_binary_cookieset_to_cookie_array(pcs_next_gub_binary_cs, 
										    suspected_account_cookies_array);
				console.log("Here here: Delete me, verification check, ngba: " + JSON.stringify(ngba));
				if (ngba.sort().compare(pcs.next_gub_cookieset_array.sort())) {
				    console.log("Here here: Delete me, pcs_next_gub_binary_cs is correct");
				}
				else {
				    console.log("Here here: Delete me, ERROR pcs_next_gub_binary_cs is INcorrect");
				}
			    }
			}
			else {
			    console.log("APPU DEBUG: Not generating pcs_next_gub_binary_cs because length mismatch" +
					", num_pass = " + num_cookies_pass_for_round + 
					", (tot_cookies - pcs.next_gub_cookieset_array.length) = " + 
					(tot_cookies - pcs.next_llb_cookieset_array.length));
			}
		    }

		    if (pcs.curr_gub_cookieset_array != undefined) {
			if ((tot_cookies - pcs.curr_gub_cookieset_array.length) == num_cookies_pass_for_round) {
			    pcs_curr_gub_binary_cs = convert_cookie_array_to_binary_cookieset(pcs.curr_gub_cookieset_array, 
											      suspected_account_cookies_array);
			    pcs_curr_gub_binary_cs = pcs_curr_gub_binary_cs.binary_cookieset;
			    {
				// Delete this entire block
				var cgba = convert_binary_cookieset_to_cookie_array(pcs_curr_gub_binary_cs, 
										    suspected_account_cookies_array);
				console.log("Here here: Delete me, verification check, cgba: " + JSON.stringify(cgba));
				if (cgba.sort().compare(pcs.curr_gub_cookieset_array.sort())) {
				    console.log("Here here: Delete me, pcs_curr_gub_binary_cs is correct");
				}
				else {
				    console.log("Here here: Delete me, ERROR pcs_curr_gub_binary_cs is INcorrect");
				}
			    }
			}
			else {
			    console.log("APPU DEBUG: Not generating pcs_next_gub_binary_cs because length mismatch" +
					", num_pass = " + num_cookies_pass_for_round + 
					", (tot_cookies - pcs.curr_gub_cookieset_array.length) = " + 
					(tot_cookies - pcs.curr_gub_cookieset_array.length));
			}
		    }

		    if (pcs_next_binary_cs != undefined &&
			(generate_previous_binary_cookieset_X(pcs_next_binary_cs.slice(0), 1)
			 != null)) {
			curr_binary_cs = generate_previous_binary_cookieset_X(pcs_next_binary_cs.slice(0), 1);
			curr_decimal_cs = binary_array_to_decimal(curr_binary_cs);

			console.log("APPU DEBUG: Changing curr_binary_cs using on-disk next_binary_cs");
			console.log("APPU DEBUG: curr_binary_cs (deciaml = " + curr_decimal_cs + "): " + 
				    JSON.stringify(curr_binary_cs));
			console.log("APPU DEBUG: On disk next_llb_cookieset_array: " + 
				    JSON.stringify(pcs.next_llb_cookieset_array));
			console.log("APPU DEBUG: On disk next_binary_cs: " + 
				    JSON.stringify(pcs_next_binary_cs));
		    }
		    else if (pcs_curr_binary_cs != undefined &&
			     (generate_previous_binary_cookieset_X(pcs_curr_binary_cs.slice(0), 1)
			      != null)) {
			curr_binary_cs  = generate_previous_binary_cookieset_X(pcs_curr_binary_cs.slice(0), 1);
			curr_decimal_cs = binary_array_to_decimal(curr_binary_cs);

			console.log("APPU DEBUG: Changing curr_binary_cs using on-disk curr_binary_cs");
			console.log("APPU DEBUG: Restoring curr_binary_cs (decimal = " + curr_decimal_cs + "): "   + 
				    JSON.stringify(curr_binary_cs));
			console.log("APPU DEBUG: On disk curr_llb_cookieset_array: " + 
				    JSON.stringify(pcs.curr_llb_cookieset_array));
			console.log("APPU DEBUG: On disk curr_binary_cs: "  + 
				    JSON.stringify(pcs_curr_binary_cs));
		    }

		    if (pcs_next_gub_binary_cs != undefined &&
			(generate_previous_binary_cookieset_X(pcs_next_gub_binary_cs.slice(0), 0)
			 != null)) {
			curr_gub_binary_cs  = generate_previous_binary_cookieset_X(pcs_next_gub_binary_cs.slice(0), 0);
			curr_gub_decimal_cs = binary_array_to_decimal(curr_gub_binary_cs);

			console.log("APPU DEBUG: Changing curr_gub_binary_cs using on-disk next_gub_binary_cs");
			console.log("APPU DEBUG: curr_gub_binary_cs (deciaml = " + curr_gub_decimal_cs + "): " + 
				    JSON.stringify(curr_gub_binary_cs));
			console.log("APPU DEBUG: On disk next_gub_cookieset_array: " + 
				    JSON.stringify(pcs.next_gub_cookieset_array));
			console.log("APPU DEBUG: On disk next_gub_binary_cs: " + 
				    JSON.stringify(pcs_next_gub_binary_cs));
		    }
		    else if (pcs_curr_gub_binary_cs != undefined &&
			     (generate_previous_binary_cookieset_X(pcs_curr_gub_binary_cs.slice(0), 0)
			      != null)) {
			curr_gub_binary_cs = generate_previous_binary_cookieset_X(pcs_curr_gub_binary_cs.slice(0), 0);
			curr_gub_decimal_cs = binary_array_to_decimal(curr_gub_binary_cs);

			console.log("APPU DEBUG: Changing curr_gub_binary_cs using on-disk curr_gub_binary_cs");
			console.log("APPU DEBUG: Restoring curr_gub_binary_cs (decimal = " + curr_gub_decimal_cs + "): "   + 
				    JSON.stringify(curr_gub_binary_cs));
			console.log("APPU DEBUG: On disk curr_gub_cookieset_array: " + 
				    JSON.stringify(pcs.curr_gub_cookieset_array));
			console.log("APPU DEBUG: On disk curr_gub_binary_cs: "  + 
				    JSON.stringify(pcs_curr_gub_binary_cs));
		    }
		}
		else {
		    console.log("APPU DEBUG: Looks like suspected_account_cookies_array is CHANGED!!");
		}

		if (pcs.on_disk_s_a_LLB_cookiesets_array != undefined) {
		    s_a_LLB_cookiesets_array = pcs.on_disk_s_a_LLB_cookiesets_array;
		    generate_s_a_LLB_decimal_cookiesets();
		}
		
		if (pcs.on_disk_s_na_LLB_cookiesets_array != undefined) {
		    s_na_LLB_cookiesets_array = pcs.on_disk_s_na_LLB_cookiesets_array;
		    generate_s_na_LLB_decimal_cookiesets();
		}
		
		if (pcs.on_disk_s_a_GUB_cookiesets_array != undefined) {
		    s_a_GUB_cookiesets_array = pcs.on_disk_s_a_GUB_cookiesets_array;
		    generate_s_a_GUB_decimal_cookiesets();
		}
		
		if (pcs.on_disk_s_na_GUB_cookiesets_array != undefined) {
		    s_na_GUB_cookiesets_array = pcs.on_disk_s_na_GUB_cookiesets_array;
		    generate_s_na_GUB_decimal_cookiesets();
		}
		
		if (pcs.on_disk_ns_na_LLB_cookiesets_array != undefined) {
		    ns_na_LLB_cookiesets_array = pcs.on_disk_ns_na_LLB_cookiesets_array;
		    generate_ns_na_LLB_decimal_cookiesets();
		}

		if (pcs.on_disk_ns_a_GUB_cookiesets_array != undefined) {
		    ns_a_GUB_cookiesets_array = pcs.on_disk_ns_a_GUB_cookiesets_array;
		    generate_ns_a_GUB_decimal_cookiesets();
		}

		if (pcs.tot_time_taken != undefined) {
		    tot_time_taken = pcs.tot_time_taken;
		}

		if (pcs.tot_bytes_sent != undefined) {
		    tot_bytes_sent = pcs.tot_bytes_sent;
		}

		if (pcs.tot_bytes_recvd != undefined) {
		    tot_bytes_recvd = pcs.tot_bytes_recvd;
		}

		if (pcs.tot_time_since_last_lo_change != undefined) {
		    tot_time_since_last_lo_change = pcs.tot_time_since_last_lo_change;
		}

		if (pcs.tot_attempts != undefined) {
		    tot_attempts = pcs.tot_attempts;
		}

		if (pcs.tot_page_reloads_overall != undefined) {
		    tot_page_reloads_overall = pcs.tot_page_reloads_overall;
		}

		if (pcs.tot_page_reloads_naive != undefined) {
		    cookiesets_optimization_stats.tot_page_reloads_naive = pcs.tot_page_reloads_naive;
		}

		if (pcs.tot_page_reloads_since_last_lo_change != undefined) {
		    tot_page_reloads_since_last_lo_change = pcs.tot_page_reloads_since_last_lo_change;
		}

		if (pcs.tot_cookiesets_tested_overall != undefined) {
		    tot_cookiesets_tested_overall = pcs.tot_cookiesets_tested_overall;
		}

		if (pcs.tot_gub_cookiesets_tested_overall != undefined) {
		    tot_gub_cookiesets_tested_overall = pcs.tot_gub_cookiesets_tested_overall;
		}

		if (pcs.tot_expand_state_cookiesets_tested_overall != undefined) {
		    tot_expand_state_cookiesets_tested_overall = pcs.tot_expand_state_cookiesets_tested_overall;
		}

		if (pcs.tot_expand_state_entered != undefined) {
		    tot_expand_state_entered = pcs.tot_expand_state_entered;
		}

		if (pcs.tot_inconclusive_cookiesets_overall != undefined) {
		    tot_inconclusive_cookiesets_overall = pcs.tot_inconclusive_cookiesets_overall;
		}

		if (pcs.cookiesets_optimization_stats != undefined) {
		    cookiesets_optimization_stats = pcs.cookiesets_optimization_stats;
		}
	    }
	}
	else {
	    console.log("APPU DEBUG: No pending start state found");
	}
    }

    if (config_known_results_for_cookiesets != undefined) {
	var ckrfc = config_known_results_for_cookiesets;

	if (ckrfc.s_a_LLB_cookiesets_array != undefined) {
	    for (var o = 0; o < ckrfc.s_a_LLB_cookiesets_array.length; o++) {
		var kn_ck_array = ckrfc.s_a_LLB_cookiesets_array[o].slice(0).sort();
		var found_it = false;
		for (var p = 0; p < s_a_LLB_cookiesets_array.length; p++) {
		    var ck_array = s_a_LLB_cookiesets_array[p].slice(0).sort();
		    if (ck_array.compare(kn_ck_array)) {
			found_it = true;
			break;
		    }
		}
		if (!found_it) {
		    s_a_LLB_cookiesets_array.push(kn_ck_array);
		    generate_s_a_LLB_decimal_cookiesets();
		}
	    }
	}
	
	if (ckrfc.s_a_GUB_cookiesets_array != undefined) {
	    for (var o = 0; o < ckrfc.s_a_GUB_cookiesets_array.length; o++) {
		var kn_ck_array = ckrfc.s_a_GUB_cookiesets_array[o].slice(0).sort();
		var found_it = false;
		for (var p = 0; p < s_a_GUB_cookiesets_array.length; p++) {
		    var ck_array = s_a_GUB_cookiesets_array[p].slice(0).sort();
		    if (ck_array.compare(kn_ck_array)) {
			found_it = true;
			break;
		    }
		}
		if (!found_it) {
		    s_a_GUB_cookiesets_array.push(kn_ck_array);
		    generate_s_a_GUB_decimal_cookiesets();
		}
	    }
	}
    }

    console.log("APPU DEBUG: Suspected account cookies: " + suspected_account_cookies_array.length);
    for (var i = 0; i < suspected_account_cookies_array.length; i++) {
	console.log(suspected_account_cookies_array[i]);
    }

//     console.log("APPU DEBUG: Trying to increment num_cookies_drop_for_round");
//     increment_num_cookies_drop_or_pass("st_LLB_cookiesets_block_DISABLED_and_NONDURING");
//     console.log("APPU DEBUG: After reading state from the disk, incremented num_cookies_drop_for_round: " + 
// 		num_cookies_drop_for_round);

//     console.log("APPU DEBUG: Trying to increment num_cookies_pass_for_round");
//     increment_num_cookies_drop_or_pass("st_GUB_cookiesets_block_DISABLED");
//     console.log("APPU DEBUG: After reading state from the disk, incremented num_cookies_pass_for_round: " + 
// 		num_cookies_pass_for_round);

//     curr_binary_cs = generate_previous_binary_cookieset_X(curr_binary_cs.slice(0), 1);
//     curr_gub_binary_cs = generate_previous_binary_cookieset_X(curr_gub_binary_cs.slice(0), 0);

//     if (curr_binary_cs == null) {
// 	curr_binary_cs = undefined;
//     }
//     if (curr_gub_binary_cs == null) {
// 	curr_gub_binary_cs = undefined;
//     }

//     console.log("APPU DEBUG: curr_binary_cs after calling increment_num_cookies_drop_or_pass: " + 
// 		JSON.stringify(curr_binary_cs));
//     console.log("APPU DEBUG: curr_gub_binary_cs after calling increment_num_cookies_drop_or_pass: " + 
// 		JSON.stringify(curr_gub_binary_cs));


//     function increment_num_cookies_drop_or_pass(state) {
// 	var rc = undefined;
// 	do {
// 	    // This code should increase num_cookies_drop_for_round 
// 	    rc = attempt_switching_state_to(state);
// 	} while (rc != "success" &&
// 		 rc != "error" &&
// 		 rc != "done");
	
// 	if (rc != "success") {
// 	    my_state = "st_terminate";
// 	    if (rc == "error") {
// 		has_error_occurred = true;
// 	    }
// 	}
	
// 	// curr_binary_cs = undefined;
// 	// curr_decimal_cs = undefined;
// 	disabled_cookies = [];

// 	pending_are_usernames_present = undefined;
// 	pending_disabled_cookies = undefined;
// 	pending_enabled_cookies_array = undefined;
// 	pending_curr_decimal_cs = undefined;
// 	pending_bool_pwd_box_present = undefined;
// 	pending_result_significance = undefined;
// 	pending_bool_pwd_box_present_first_verification = undefined;
// 	pending_bool_pwd_box_present_suspected_block = undefined;
//     }


    function cookie_investigator_closed() {
	report_fatal_error("tab-closed-externally");		
    }


    function store_intermediate_state(quiet) { 
	quiet = (quiet == undefined) ? false : true;
	var tt = tot_time_taken + ((new Date()).getTime() - ci_start_time.getTime())/1000;
	// 	var tcgt = tot_time_since_last_lo_change + 
	// 	    (((new Date()).getTime() - last_cookieset_test_time.getTime())/1000);
	var tbs = tot_bytes_sent + bytes_sent_this_attempt;
	var tbr = tot_bytes_recvd + bytes_recvd_this_attempt;

	var cba = undefined;
	if (curr_binary_cs) {
	    cba = convert_binary_cookieset_to_cookie_array(curr_binary_cs, suspected_account_cookies_array);
	    console.log("Here here: Delete me, going to store cba: " + JSON.stringify(cba));
	    console.log("Here here: Delete me, corresponding curr_binary_cs: " + JSON.stringify(curr_binary_cs));
	}

	var cgba = undefined;
	if (curr_gub_binary_cs) {
	    cgba = convert_binary_cookieset_to_cookie_array(curr_gub_binary_cs, suspected_account_cookies_array);
	    console.log("Here here: Delete me, going to store cgba: " + JSON.stringify(cgba));
	    console.log("Here here: Delete me, corresponding curr_gub_binary_cs: " + JSON.stringify(curr_gub_binary_cs));
	}

	offload_cookie_investigation_state(my_url, {
		"curr_llb_cookieset_array"           : cba,
		    "curr_gub_cookieset_array"   : cgba,
		    "next_llb_cookieset_array" : undefined,
		    "next_gub_cookieset_array" : undefined,
		    "cookiesets_optimization_stats" : cookiesets_optimization_stats,
		    "tot_time_taken" : tt,
		    "tot_bytes_sent" : tbs,
		    "tot_bytes_recvd" : tbr,
		    "tot_time_since_last_lo_change" : tot_time_since_last_lo_change,
		    "tot_cookiesets_tested_overall" : tot_cookiesets_tested_overall,
		    "tot_gub_cookiesets_tested_overall" : tot_gub_cookiesets_tested_overall,
		    "tot_expand_state_cookiesets_tested_overall" : tot_expand_state_cookiesets_tested_overall,
		    "tot_expand_state_entered" : tot_expand_state_entered,
		    "tot_inconclusive_cookiesets_overall" : tot_inconclusive_cookiesets_overall,
		    "tot_page_reloads_overall" : tot_page_reloads_overall,
		    "tot_page_reloads_naive" : cookiesets_optimization_stats.tot_page_reloads_naive,
		    "tot_page_reloads_since_last_lo_change" : tot_page_reloads_since_last_lo_change,
		    "tot_attempts" : (tot_attempts+1),
		    "expand_state_discovered_cookies" : JSON.stringify(expand_state_discovered_cookies),
		    "on_disk_s_a_LLB_cookiesets_array" : s_a_LLB_cookiesets_array,
		    "on_disk_s_na_LLB_cookiesets_array" : s_na_LLB_cookiesets_array,
		    "on_disk_s_a_GUB_cookiesets_array" : s_a_GUB_cookiesets_array,
		    "on_disk_s_na_GUB_cookiesets_array" : s_na_GUB_cookiesets_array,
		    "on_disk_ns_na_LLB_cookiesets_array" : ns_na_LLB_cookiesets_array,
		    "on_disk_ns_a_GUB_cookiesets_array" : ns_a_GUB_cookiesets_array,
		    "suspected_account_cookies_array" : suspected_account_cookies_array,
		    "non_suspected_account_cookies_array" : non_suspected_account_cookies_array,
		    "num_cookies_drop_for_round" : num_cookies_drop_for_round,
		    "num_cookies_pass_for_round" : num_cookies_pass_for_round,
		    }, 
	    quiet);
    }
	
    function reset_to_start_state(acct_cookies) {
	my_state = "st_verification_epoch";

	if (acct_cookies.length == 1 &&
	    acct_cookies[0] == "https://chat.bankofamerica.com/hc/LPBofA2:HumanClickKEY") {
	    console.log("Here here: Delete me, Delete this entire if block");
	}

	for (var i = 0; i < acct_cookies.length; i++) {
	    if (suspected_account_cookies_array.indexOf(acct_cookies[i]) == -1) {
		suspected_account_cookies_array.push(acct_cookies[i]);
		tot_cookies += 1;
	    }

	    var delete_index = non_suspected_account_cookies_array.indexOf(acct_cookies[i]);
	    if (delete_index != -1) {
		non_suspected_account_cookies_array.splice(delete_index, 1);
		tot_ns_cookies -= 1;
	    }
	}

	last_non_verification_state = "st_cookie_test_start";

	// Pushing these cookies to existing arrays because they were
	// first enabled and then disabled when these cookiesets were pushed 
	// to following arrays. 
	// They were pushed only after verifying that result remained same
	// whether they were enabled or disabled.
	// So we need to take the maximum number of disabled-cookies
	// for each result below. Hence we need to add these newly
	// tranferred cookies from non-supected to suspected to
	// both:
	// s_na_GUB_cookiesets_array, s_na_LLB_cookiesets_array.
	for (var i = 0; i < s_na_GUB_cookiesets_array.length; i++) {
	    for (var j = 0; j < acct_cookies.length; j++) {
		s_na_GUB_cookiesets_array[i].push(acct_cookies[j]);
	    }
	}

	for (var i = 0; i < s_na_LLB_cookiesets_array.length; i++) {
	    for (var j = 0; j < acct_cookies.length; j++) {
		s_na_LLB_cookiesets_array[i].push(acct_cookies[j]);
	    }
	}

	// Re-generate decimal cookiesets for pruning-optimization arrays 
	generate_s_a_LLB_decimal_cookiesets();
	generate_s_na_GUB_decimal_cookiesets();

	var rc = check_sanity_s_na_GUB(s_na_GUB_cookiesets_array, suspected_account_cookies_array);
	if (!rc) {
	    console.log("Here here: Some error, unnecessary s_na_GUB detected");
	}

	// Re-generate decimal cookiesets for retesting-optimization arrays
	generate_s_na_LLB_decimal_cookiesets();
	generate_s_a_GUB_decimal_cookiesets();

	// Re-generate deciaml cookiesets for retesting-optimization arrays for EXPAND-STATE
	ns_na_LLB_cookiesets_array = adjust_cookiesets_array(acct_cookies, 
							     ns_na_LLB_cookiesets_array);
	generate_ns_na_LLB_decimal_cookiesets();

	ns_a_GUB_cookiesets_array = adjust_cookiesets_array(acct_cookies, 
							    ns_a_GUB_cookiesets_array);
	generate_ns_a_GUB_decimal_cookiesets();	

	binary_cookiesets = [];
	decimal_cookiesets = [];
	
	// epoch_id = 0;
	// req_epch_table = {};

	// Reseting the pending variables for verification_epoch
	pending_are_usernames_present = undefined;
	pending_disabled_cookies = undefined;
	pending_enabled_cookies_array = undefined;
	pending_curr_decimal_cs = undefined;
	pending_bool_pwd_box_present = undefined;
	pending_result_significance = undefined;
	pending_bool_pwd_box_present_first_verification = undefined;
	pending_bool_pwd_box_present_suspected_block = undefined;

	bool_expand_state_initialized = false;

	if (last_non_expand_state == "st_LLB_cookiesets_block_DISABLED") {
	    var rccs = convert_cookie_array_to_binary_cookieset(disabled_cookies, suspected_account_cookies_array);
	    curr_binary_cs  = generate_previous_binary_cookieset_X(rccs.binary_cookieset.slice(0), 1);

	    if (curr_binary_cs != null) {
		curr_decimal_cs = binary_array_to_decimal(curr_binary_cs);
	    }
	    else {
		curr_binary_cs  = undefined;
		curr_decimal_cs  = undefined;
	    }

	    if (curr_gub_binary_cs) {
		for (var i = 0; i < acct_cookies.length; i++) {
		    curr_gub_binary_cs.push(1);
		}
		curr_gub_decimal_cs = binary_array_to_decimal(curr_gub_binary_cs);
	    }
	}

	if (last_non_expand_state == "st_GUB_cookiesets_block_DISABLED_and_NONDURING") {
	    for (var i = 0; i < acct_cookies.length; i++) {
		disabled_cookies.push(acct_cookies[i]);
	    }

	    var rccs = convert_cookie_array_to_binary_cookieset(disabled_cookies, suspected_account_cookies_array);
	    curr_gub_binary_cs = generate_previous_binary_cookieset_X(rccs.binary_cookieset.slice(0), 0);
	    if (curr_gub_binary_cs != null) {
		curr_gub_decimal_cs = binary_array_to_decimal(curr_gub_binary_cs);
	    }
	    else {
		curr_gub_binary_cs  = undefined;
		curr_gub_decimal_cs  = undefined;
	    }

	    if (curr_binary_cs) {
		for (var i = 0; i < acct_cookies.length; i++) {
		    curr_binary_cs.push(0);
		}
		curr_decimal_cs = binary_array_to_decimal(curr_binary_cs);
	    }
	}

	// 	curr_binary_cs  = undefined;
	// 	curr_decimal_cs  = undefined;
	// 	curr_gub_binary_cs  = undefined;
	// 	curr_gub_decimal_cs  = undefined;

	last_non_expand_state = "";

	enabled_cookies_array = [];
	disabled_cookies = [];
	expand_state_disabled_cookies = [];

	binary_cookiesets = [];
	decimal_cookiesets = [];
	
	curr_expand_state_binary_cs = undefined;
	curr_expand_state_decimal_cs = undefined;
	curr_expand_state_gub_binary_cs = undefined;
	curr_expand_state_gub_decimal_cs = undefined;

	expand_state_num_cookies_drop_for_round = 1;
	expand_state_num_cookies_pass_for_round = 1;

	store_intermediate_state();
    }

    
    function generate_random_cookieset_index(tot_cookiesets) {
	return (Math.ceil((Math.random() * tot_cookiesets * 100)) % tot_cookiesets);
    }


    function print_cookie_investigation_state() {
	console.log("APPU DEBUG: COOKIE INVESTIGATION STATUS: " + my_state);
    }
    

    function increment_epoch_id() {
	epoch_id += 1;
	console.log("APPU DEBUG: Incremented EPOCH-ID: " + epoch_id);
    }

    function get_epoch_id() {
	return epoch_id;
    }

    function set_page_load_success(bool_page_load_success) {
	page_load_success = bool_page_load_success;
    }

    function get_page_load_success() {
	return page_load_success;
    }


    function get_jaccard_index(sl1, sl2) {
	var elem1 = Object.keys(sl1);
	var elem2 = Object.keys(sl2);
	var all_elements = elem1.concat(elem2);
	var m11 = 0, m01 = 0, m10 = 0;
	
	for (var i = 0; i < all_elements.length; i++) {
	    var e = all_elements[i]; 
	    if (e in sl1 &&
		e in sl2) {
		var min = (sl1[e] > sl2[e]) ? sl2[e]: sl1[e];
		m11 += min;
	    }
	    else if (e in sl1) {
		m10 += sl1[e];
	    }
	    else if (e in sl2) {
		m01 += sl2[e];
	    }
	}
	
	console.log("APPU DEBUG: m11: "+ m11 +",m01: "+ m01 +", m10: "+ m10);
	return (m11/(m11 + m01 + m10));
    }


    // This was some experimental stuff that I had added just to see if I can
    // compare page similarity just based on the presence of visible HTML elements
    // Turns out simple jaccard's index is not reliable and highly depends on the
    // nature of underlying page. So for now, this is turned off.
    var verification_screen_layout = {};
    var no_cookies_screen_layout = {};
    var suspected_blocked_screen_layout = {};
    var suspected_passed_screen_layout = {};
    
    function compare_screen_layout(sl) {
	if (my_state == "st_verification_epoch" &&
	    Object.keys(verification_screen_layout).length == 0) {
	    console.log("APPU DEBUG: Setting verification screen layout, size: " + Object.keys(sl).length);
	    verification_screen_layout = sl;
	}
	else if (my_state == "st_start_with_no_cookies" &&
		 Object.keys(no_cookies_screen_layout).length == 0) {
	    console.log("APPU DEBUG: Setting no cookies screen layout, size: " + Object.keys(sl).length);
	    no_cookies_screen_layout = sl;
	}
	else if (my_state == "st_suspected_cookies_block_test" &&
		 Object.keys(suspected_blocked_screen_layout).length == 0) {
	    console.log("APPU DEBUG: Setting during blocked screen layout, size: " + Object.keys(sl).length);
	    suspected_blocked_screen_layout = sl;
	}
	else if (my_state == "st_suspected_cookies_pass_test" &&
		 Object.keys(suspected_passed_screen_layout).length == 0) {
	    console.log("APPU DEBUG: Setting during passed screen layout, size: " + Object.keys(sl).length);
	    suspected_passed_screen_layout = sl;
	}

	var ji = undefined;
	ji = get_jaccard_index(verification_screen_layout, sl);
	console.log("APPU DEBUG: Jaccard's index(verification_screen_layout): " + ji);
	
	ji = get_jaccard_index(no_cookies_screen_layout, sl);
	console.log("APPU DEBUG: Jaccard's index(no_cookies_screen_layout): " + ji);
	
	ji = get_jaccard_index(suspected_blocked_screen_layout, sl);
	console.log("APPU DEBUG: Jaccard's index(suspected_blocked_screen_layout): " + ji);
	
	ji = get_jaccard_index(suspected_passed_screen_layout, sl);
	console.log("APPU DEBUG: Jaccard's index(suspected_passed_screen_layout): " + ji);
    }

    // Keeping a moving average of page-load-times for successful verification
    // epochs.
    function set_page_load_time(plt) {
	var t = total_verification_page_loads * page_load_time;
	total_verification_page_loads += 1;
	page_load_time = (t + plt)/total_verification_page_loads;
	console.log("APPU DEBUG: Current average page-load-time: " + 
		    page_load_time + " ms (total verification page loads:" + 
		    total_verification_page_loads + ")");
    }
    
    function get_page_load_time() {
	return page_load_time;
    }


    function are_usernames_present(present_usernames) {
	if (top_three_elements_with_usernames != undefined) {
	    var are_usernames_present = detect_login_status(present_usernames);
	    return are_usernames_present;
	}
	
	return true;
    }

    function reset_last_test_time() {
	last_cookieset_test_time = new Date();
    }

    function init_cookie_investigation() {
	var cit = cookie_investigating_tabs[my_tab_id];
	cit.url = my_url;
	cit.domain = my_domain;
	cit.num_pageload_timeouts = 0;
	cit.content_script_started = false;

	cit.bool_state_in_progress = false;

	cit.reload_interval = undefined;

	cit.reset_last_test_time = reset_last_test_time;
	cit.are_usernames_present = are_usernames_present;
	cit.get_page_load_time = get_page_load_time;
	cit.set_page_load_time = set_page_load_time;
	cit.tab_closed_cb = cookie_investigator_closed;
	cit.set_page_load_success = set_page_load_success;
	cit.get_page_load_success = get_page_load_success;
	cit.get_epoch_id = get_epoch_id;

	cit.increment_epoch_id = increment_epoch_id;
	cit.increment_page_reloads = increment_page_reloads;
	cit.increment_sent_bytes = increment_sent_bytes;
	cit.increment_recvd_bytes = increment_recvd_bytes;

	cit.compare_screen_layout = compare_screen_layout;	    
	cit.web_request_fully_fetched = web_request_fully_fetched;
	cit.print_cookie_investigation_state = print_cookie_investigation_state;
	cit.get_state = get_state; 
	cit.get_url = get_url; 
	cit.populate_shadow_cookie_store = populate_shadow_cookie_store; 
	cit.report_fatal_error = report_fatal_error; 
	cit.get_shadow_cookie_store = get_shadow_cookie_store;
	cit.print_cookie_array = print_cookie_array;
    }


    function increment_sent_bytes(bytes) {
	if (bytes) {
	    bytes_sent_this_attempt += bytes;
	}
    }


    function increment_recvd_bytes(bytes) {
	if (bytes) {
	    bytes_recvd_this_attempt += bytes;
	}
    }


    function increment_page_reloads() {
	tot_page_reloads += 1;
	tot_page_reloads_overall += 1;
	cookiesets_optimization_stats.tot_page_reloads_naive += 1;
	tot_page_reloads_since_last_lo_change += 1;
    }
    
    function print_cookie_array() {
	console.log("APPU DEBUG: Following cookies and their combinations would be tested");
	for (var i = 0; i < suspected_account_cookies_array.length; i++) {
	    console.log(suspected_account_cookies_array[i]);
	}
    }


    function get_shadow_cookie_store() {
	return shadow_cookie_store;
    }
    

    function prepare_browser_cookie_store_for_next_test(cb_populated_browser_cookie_store) {
	function repopulate_browser_cookie_store() {
	    var to_be_restored_cookies = {};
	    to_be_restored_cookies.cookies = [];
	    
	    var cs = pii_vault.aggregate_data.session_cookie_store[my_domain];
	    
	    if (my_state == "st_start_with_no_cookies" ||
		my_state == "st_suspected_cookies_pass_test" ||
		my_state == "st_suspected_cookies_block_test") {
		disabled_cookies = [];
	    }
	    
	    enabled_cookies_array = [];
	    var enabled_nonduring_cookies_array = [];
	    var enabled_during_cookies_array = [];
	    
	    for (var i = 0; i < orig_browser_cookie_store.cookies.length; i++) {
		var cookie_name = orig_browser_cookie_store.cookies[i].name;
		var cookie_domain = orig_browser_cookie_store.cookies[i].domain;
		var cookie_path = orig_browser_cookie_store.cookies[i].path;
		var cookie_protocol = (orig_browser_cookie_store.cookies[i].secure) ? "https://" : "http://";
		var cookie_key = cookie_protocol + cookie_domain + cookie_path + ":" + cookie_name;
		
		if (!(cookie_key in cs.cookies)) {
		    // If the cookie was not known in session cookie store then ignore it.
		    continue;
		}
		
		if (my_state == "st_suspected_cookies_pass_test") {
		    if (suspected_account_cookies_array.indexOf(cookie_key) == -1) {
			// We only want 'DURING' cookies in this epoch
			// (suspected_account_cookies_array is populated with 'DURING' cookies in usual epoch)
			disabled_cookies.push(cookie_key);
			continue;
		    }
		    if (cs.cookies[cookie_key].cookie_class != "during" &&
			cs.cookies[cookie_key].is_part_of_account_cookieset != true) {
			disabled_cookies.push(cookie_key);
			continue;
		    }
		}
		else if (my_state == "st_suspected_cookies_block_test") {
		    if (suspected_account_cookies_array.indexOf(cookie_key) != -1) {
			// We only want non-'DURING' cookies in this epoch
			// (suspected_account_cookies_array is populated with 'DURING' cookies in usual epoch)
			disabled_cookies.push(cookie_key);
			continue;
		    }
		}
		else if (my_state == 'st_testing') {
		    // If the cookie is in the set of disabled-cookie-sets in this 
		    // iteration, then ignore it.
		    if (disabled_cookies.indexOf(cookie_key) != -1) {
			continue;
		    }
		}
		else if (my_state == 'st_LLB_cookiesets_block_DISABLED_and_NONDURING') {
		    // If the cookie is in the set of disabled-cookie-sets in this 
		    // iteration, then ignore it.
		    if (disabled_cookies.indexOf(cookie_key) != -1) {
			continue;
		    }
		    // If cookie class is not 'during' and it is not part of 
		    // account_cookieset then ignore it.
		    if (cs.cookies[cookie_key].cookie_class != "during" &&
			cs.cookies[cookie_key].is_part_of_account_cookieset != true) {
			continue;
		    }
		}
		else if (my_state == 'st_LLB_cookiesets_block_DISABLED') {
		    // If the cookie is in the set of disabled-cookie-sets in this 
		    // iteration, then ignore it.
		    if (disabled_cookies.indexOf(cookie_key) != -1) {
			continue;
		    }
		}
		else if (my_state == 'st_GUB_cookiesets_block_DISABLED_and_NONDURING') {
		    // If the cookie is in the set of disabled-cookie-sets in this 
		    // iteration, then ignore it.
		    if (disabled_cookies.indexOf(cookie_key) != -1) {
			continue;
		    }
		    if (cs.cookies[cookie_key].cookie_class != "during" &&
			cs.cookies[cookie_key].is_part_of_account_cookieset != true) {
			continue;
		    }
		}
		else if (my_state == 'st_GUB_cookiesets_block_DISABLED') {
		    // If the cookie is in the set of disabled-cookie-sets in this 
		    // iteration, then ignore it.
		    if (disabled_cookies.indexOf(cookie_key) != -1) {
			continue;
		    }
		}
		else if (my_state == 'st_expand_LLB_suspected_account_cookies' ||
			 my_state == 'st_expand_GUB_suspected_account_cookies') {
		    // If the cookie is in the set of disabled-cookie-sets in this 
		    // iteration, then ignore it.
		    if (disabled_cookies.indexOf(cookie_key) != -1) {
			continue;
		    }
		    if (expand_state_disabled_cookies.indexOf(cookie_key) != -1) {
			continue;
		    }
		}
		
		enabled_cookies_array.push(cookie_key);
		if (cs.cookies[cookie_key].cookie_class == "during" ||
		    cs.cookies[cookie_key].is_part_of_account_cookieset == true) {
		    enabled_during_cookies_array.push(cookie_key);
		}
		else {
		    enabled_nonduring_cookies_array.push(cookie_key);
		}
		
		to_be_restored_cookies.cookies.push($.extend(true, {}, orig_browser_cookie_store.cookies[i]));
	    }
	    
	    console.log("APPU DEBUG: New browser cookie-store length: " + 
			to_be_restored_cookies.cookies.length + 
			", Original browser cookie-store length: " + orig_browser_cookie_store.cookies.length);
	
	    if (my_state != "st_verification_epoch"                            &&
		my_state != "st_suspected_cookies_block_test"                  &&
		my_state != "st_expand_LLB_suspected_account_cookies"          &&
		my_state != "st_expand_GUB_suspected_account_cookies"          &&
		my_state != "st_GUB_cookiesets_block_DISABLED_and_NONDURING"   &&
		my_state != "st_GUB_cookiesets_block_DISABLED") {
		console.log("APPU DEBUG: Disabled cookies in this epoch: " + 
			JSON.stringify(disabled_cookies));
	    }
	    else if (my_state == "st_expand_LLB_suspected_account_cookies") {
		console.log("APPU DEBUG: Main disabled cookies that caused to enter 'expand' state: " + 
			    JSON.stringify(disabled_cookies));
		console.log("APPU DEBUG: Disabled cookies getting tested: " + 
			    JSON.stringify(expand_state_disabled_cookies));
	    }
	    
	    if (my_state == "st_expand_GUB_suspected_account_cookies") {
		console.log("APPU DEBUG: Main disabled cookies that caused to enter 'expand' state: " + 
			    JSON.stringify(disabled_cookies));
		console.log("APPU DEBUG: Enabled non-during cookies getting tested: " + 
			    JSON.stringify(enabled_nonduring_cookies_array));
	    }
	    
	    if (my_state == "st_GUB_cookiesets_block_DISABLED_and_NONDURING" ||
		my_state == "st_GUB_cookiesets_block_DISABLED"               ||
		my_state == "st_testing") {
		console.log("APPU DEBUG: Enabled during cookies in this epoch: " + 
			    JSON.stringify(enabled_during_cookies_array));
		if (enabled_during_cookies_array.length != num_cookies_pass_for_round) {
		    console.log("Here here: Delete me");
		}
		console.log("APPU DEBUG: Enabled non-during cookies getting tested: " + 
			    JSON.stringify(enabled_nonduring_cookies_array));
	    }
	    
	    console.log("APPU DEBUG: Restoring '" + to_be_restored_cookies.cookies.length +
			"' cookies to browser cookie-store:");
	    dump_to_browser_cookie_store(to_be_restored_cookies, cb_populated_browser_cookie_store);
	}
	delete_all_cookies(my_domain, repopulate_browser_cookie_store);
// 	if (my_domain == "comast.com") {
// 	    delete_all_cookies("comcast.net");
// 	}
    }


    function get_cookie_store_snapshot(cookie_store, cb_shadow_restored) {
	var cb_cookies = (function(cookie_store, cb_shadow_restored) {
		return function(all_cookies) {
		    var cs = pii_vault.aggregate_data.session_cookie_store[my_domain];
		    
		    if (my_state == "st_start_with_no_cookies" ||
			my_state == "st_suspected_cookies_pass_test" ||
			my_state == "st_suspected_cookies_block_test") {
			disabled_cookies = [];
		    }

		    enabled_cookies_array = [];
		    var enabled_nonduring_cookies_array = [];
		    var enabled_during_cookies_array = [];

		    for (var i = 0; i < all_cookies.length; i++) {
			var cookie_name = all_cookies[i].name;
			var cookie_domain = all_cookies[i].domain;
			var cookie_path = all_cookies[i].path;
			var cookie_protocol = (all_cookies[i].secure) ? "https://" : "http://";
			var cookie_key = cookie_protocol + cookie_domain + cookie_path + ":" + cookie_name;

			if (cookie_key.indexOf("BOFA_LOCALE_COOKIE") != -1 &&
			    my_state == 'st_GUB_cookiesets_block_DISABLED') {
			    console.log("Here here: Delete me");
			}

			if (!(cookie_key in cs.cookies)) {
			    // If the cookie was not known in session cookie store then ignore it.
			    continue;
			}

			if (my_state == "st_suspected_cookies_pass_test") {
			    if (suspected_account_cookies_array.indexOf(cookie_key) == -1) {
				// We only want 'DURING' cookies in this epoch
				// (suspected_account_cookies_array is populated with 'DURING' cookies in usual epoch)
				disabled_cookies.push(cookie_key);
				continue;
			    }
			    if (cs.cookies[cookie_key].cookie_class != "during" &&
				cs.cookies[cookie_key].is_part_of_account_cookieset != true) {
				disabled_cookies.push(cookie_key);
				continue;
			    }
			}
			else if (my_state == "st_suspected_cookies_block_test") {
			    if (suspected_account_cookies_array.indexOf(cookie_key) != -1) {
				// We only want non-'DURING' cookies in this epoch
				// (suspected_account_cookies_array is populated with 'DURING' cookies in usual epoch)
				disabled_cookies.push(cookie_key);
				continue;
			    }
			}
			else if (my_state == 'st_testing') {
			    // If the cookie is in the set of disabled-cookie-sets in this 
			    // iteration, then ignore it.
			    if (disabled_cookies.indexOf(cookie_key) != -1) {
				continue;
			    }
			}
			else if (my_state == 'st_LLB_cookiesets_block_DISABLED_and_NONDURING') {
			    // If the cookie is in the set of disabled-cookie-sets in this 
			    // iteration, then ignore it.
			    if (disabled_cookies.indexOf(cookie_key) != -1) {
				continue;
			    }
			    // If cookie class is not 'during' and it is not part of 
			    // account_cookieset then ignore it.
			    if (cs.cookies[cookie_key].cookie_class != "during" &&
				cs.cookies[cookie_key].is_part_of_account_cookieset != true) {
				continue;
			    }
			}
			else if (my_state == 'st_LLB_cookiesets_block_DISABLED') {
			    // If the cookie is in the set of disabled-cookie-sets in this 
			    // iteration, then ignore it.
			    if (disabled_cookies.indexOf(cookie_key) != -1) {
				continue;
			    }
			}
			else if (my_state == 'st_GUB_cookiesets_block_DISABLED_and_NONDURING') {
			    // If the cookie is in the set of disabled-cookie-sets in this 
			    // iteration, then ignore it.
			    if (disabled_cookies.indexOf(cookie_key) != -1) {
				continue;
			    }
			    if (cs.cookies[cookie_key].cookie_class != "during" &&
				cs.cookies[cookie_key].is_part_of_account_cookieset != true) {
				continue;
			    }
			}
			else if (my_state == 'st_GUB_cookiesets_block_DISABLED') {
			    // If the cookie is in the set of disabled-cookie-sets in this 
			    // iteration, then ignore it.
			    if (disabled_cookies.indexOf(cookie_key) != -1) {
				continue;
			    }
			}
			else if (my_state == 'st_expand_LLB_suspected_account_cookies' ||
				 my_state == 'st_expand_GUB_suspected_account_cookies') {
			    // If the cookie is in the set of disabled-cookie-sets in this 
			    // iteration, then ignore it.
			    if (disabled_cookies.indexOf(cookie_key) != -1) {
				continue;
			    }
			    if (expand_state_disabled_cookies.indexOf(cookie_key) != -1) {
				continue;
			    }
			}
			
			enabled_cookies_array.push(cookie_key);
			if (cs.cookies[cookie_key].cookie_class == "during" ||
			    cs.cookies[cookie_key].is_part_of_account_cookieset == true) {
			    enabled_during_cookies_array.push(cookie_key);
			}
			else {
			    enabled_nonduring_cookies_array.push(cookie_key);
			}
			cookie_store[cookie_key] = all_cookies[i];
		    }
		    console.log("APPU DEBUG: Populated shadow_cookie_store length: " + 
				Object.keys(cookie_store).length + 
				", On-disk cookie-store length: " + all_cookies.length);

		    //  console.log("Here here: shadow_cookie_store: " + 
		    // 		     JSON.stringify(Object.keys(cookie_store)));

		    if (my_state != "st_verification_epoch"                            &&
			my_state != "st_suspected_cookies_block_test"                  &&
			my_state != "st_expand_LLB_suspected_account_cookies"          &&
			my_state != "st_expand_GUB_suspected_account_cookies"          &&
			my_state != "st_GUB_cookiesets_block_DISABLED_and_NONDURING"   &&
			my_state != "st_GUB_cookiesets_block_DISABLED") {
			console.log("APPU DEBUG: Disabled cookies in this epoch: " + 
				    JSON.stringify(disabled_cookies));
		    }
		    else if (my_state == "st_expand_LLB_suspected_account_cookies") {
			console.log("APPU DEBUG: Main disabled cookies that caused to enter 'expand' state: " + 
				    JSON.stringify(disabled_cookies));
			console.log("APPU DEBUG: Disabled cookies getting tested: " + 
				    JSON.stringify(expand_state_disabled_cookies));
		    }
		    
		    if (my_state == "st_expand_GUB_suspected_account_cookies") {
			console.log("APPU DEBUG: Main disabled cookies that caused to enter 'expand' state: " + 
				    JSON.stringify(disabled_cookies));
			console.log("APPU DEBUG: Enabled non-during cookies getting tested: " + 
				    JSON.stringify(enabled_nonduring_cookies_array));
		    }

		    if (my_state == "st_GUB_cookiesets_block_DISABLED_and_NONDURING" ||
			my_state == "st_GUB_cookiesets_block_DISABLED"               ||
			my_state == "st_testing") {
			console.log("APPU DEBUG: Enabled during cookies in this epoch: " + 
				    JSON.stringify(enabled_during_cookies_array));
			if (enabled_during_cookies_array.length != num_cookies_pass_for_round) {
			    console.log("Here here: Delete me");
			}
			console.log("APPU DEBUG: Enabled non-during cookies getting tested: " + 
				    JSON.stringify(enabled_nonduring_cookies_array));
		    }

		    original_shadow_cookie_store = $.extend(true, {}, shadow_cookie_store);

		    cb_shadow_restored();
		}
	    })(cookie_store, cb_shadow_restored);
	
	get_all_cookies(my_domain, cb_cookies);
    }
    

    function are_disabled_cookies_regenerated() {
	// Disabling this function
	return;

	var num_regen_cookies = 0;
	for (var i = 0; i < disabled_cookies.length; i++) {
	    if (shadow_cookie_store[disabled_cookies[i]] != undefined) {
		console.log("APPU DEBUG: Disabled cookie(" + 
			    disabled_cookies[i] + ") was regenerated in shadow-cookie-store: ");
		num_regen_cookies += 1;
	    }
	}
	console.log("APPU DEBUG: Total number of disabled cookies: " + disabled_cookies.length + 
		    ", Total number of regenerated cookies: " + num_regen_cookies);
	console.log("APPU DEBUG: Shadow-Cookie-Store length: " + Object.keys(shadow_cookie_store).length);

	var curr_shadow_cookies = Object.keys(shadow_cookie_store);
	var new_cookies = [];
	for (var i = 0; i < curr_shadow_cookies.length; i++) {
	    if (original_shadow_cookie_store[curr_shadow_cookies[i]] == undefined) {
		new_cookies.push(curr_shadow_cookies[i]);
	    }
	}

	console.log("APPU DEBUG: Number of new cookies added to shadow-cookie-store: " + new_cookies.length);
	for (var i = 0; i < new_cookies.length; i++) {
	    console.log(i + ". " + new_cookies[i]);
	}
    }


    function populate_shadow_cookie_store(cb_shadow_restored) {
	shadow_cookie_store = {};
	if (my_state != "st_start_with_no_cookies") {
	    if (config_do_not_use_shadow_cookie_store) {
		var cb_populated_browser_cookie_store = cb_shadow_restored;
		prepare_browser_cookie_store_for_next_test(cb_populated_browser_cookie_store);
	    }
	    else {
		get_cookie_store_snapshot(shadow_cookie_store, cb_shadow_restored);
	    }
	}
	else {
	    if (config_do_not_use_shadow_cookie_store) {
		delete_all_cookies(my_domain, cb_shadow_restored);
	    }
	    else {
		cb_shadow_restored();
	    }
	}
    }
    
    
    function update_tab_id(tab_id) {
	my_tab_id = tab_id;

	cookie_investigating_tabs[my_tab_id].shadow_cookie_store = shadow_cookie_store;

	shut_tab_forcefully = window.setTimeout(function() {
		console.log("APPU DEBUG: In forceful shutdown for COOKIE-INVESTIGATOR-TAB: " + my_url);
		report_fatal_error("hard-timeout");
	    }, limit_forceful_shutdown * 60 * 1000);
    }
    
    
    function verification_epoch_results(are_usernames_present, bool_pwd_box_present) {
	console.log("APPU DEBUG: Verification Epoch, Is user still logged-in? " + 
		    (are_usernames_present ? "YES" : "NO"));
	verification_are_usernames_present = are_usernames_present;
	verification_bool_pwd_box_present = bool_pwd_box_present;
	// If not, then login and terminate.
    }
    
    function commit_llb_account_cookieset() {
	s_a_LLB_cookiesets_array.push(pending_disabled_cookies[0].slice(0));
	s_a_LLB_decimal_cookiesets.push(pending_curr_decimal_cs[0]);
	
	verified_strict_login_cookiesets_array.push(pending_enabled_cookies_array[0].slice(0));
	
	var cs = pii_vault.aggregate_data.session_cookie_store[my_domain];
	var acct_cookies = pending_disabled_cookies[0];
	for (var i = 0; i < acct_cookies.length; i++) {
	    cs.cookies[acct_cookies[i]].is_part_of_account_cookieset = true;
	}
	flush_session_cookie_store();
	store_intermediate_state();

	console.log("APPU DEBUG: (" + my_state + ")ACCOUNT COOKIE-SET DETECTED: (" + 
		    JSON.stringify(disabled_cookies) + 
		    "): ");

	tot_page_reloads_since_last_lo_change = 0;
    }

    function commit_llb_nonaccount_cookieset() {
	s_na_LLB_cookiesets_array.push(pending_disabled_cookies[0].slice(0));
	s_na_LLB_decimal_cookiesets.push(pending_curr_decimal_cs[0]);
	
	if (pending_bool_pwd_box_present[0]) {
	    verified_restricted_cookiesets_array.push(pending_disabled_cookies[0].slice(0));
	    console.log("APPU DEBUG: Found restrictive cookieset: " + 
			JSON.stringify(pending_disabled_cookies[0]));
	}
	store_intermediate_state();
    }

    function shift_llb_expand_account_cookieset_to_suspected() {
	var cs = pii_vault.aggregate_data.session_cookie_store[my_domain];
	var acct_cookies = expand_state_disabled_cookies;
	
	for (var i = 0; i < acct_cookies.length; i++) {
	    cs.cookies[acct_cookies[i]].is_part_of_account_cookieset = true;
	    if (expand_state_discovered_cookies.indexOf(acct_cookies[i]) == -1) {
		expand_state_discovered_cookies.push(acct_cookies[i]);
	    }
	}

	flush_session_cookie_store();
	store_intermediate_state();
	return acct_cookies;
    }

    
    function commit_llb_expand_nonaccount_cookieset() {
	var cs_array = [disabled_cookies.slice(0), expand_state_disabled_cookies.slice(0)];
	ns_na_LLB_cookiesets_array.push(cs_array);

	// Calculating binary_cookieset once again because either GUB/LLB would have caused to enter
	// expand-state. So corresponding bin_cs is in either curr_decimal_cs, curr_gub_decimal_cs.
	var rc = convert_cookie_array_to_binary_cookieset(disabled_cookies, suspected_account_cookies_array);

	ns_na_LLB_decimal_cookiesets.push([rc.decimal_cookieset, 
					   pending_curr_decimal_cs]);

	store_intermediate_state();
    }

    function commit_gub_account_cookieset() {
	// User is not logged-in. We need to test subset of this GUB cookieset.
	s_a_GUB_cookiesets_array.push(pending_disabled_cookies[0].slice(0));
	s_a_GUB_decimal_cookiesets.push(pending_curr_decimal_cs[0]);
	store_intermediate_state();
    }

    function commit_gub_nonaccount_cookieset() {
	// User is logged in in both GUB sub states. We found a GUB optimization
	// cookieset
	s_na_GUB_cookiesets_array.push(pending_disabled_cookies[0].slice(0));
	s_na_GUB_decimal_cookiesets.push(pending_curr_decimal_cs[0]);
	store_intermediate_state();
    }

    function shift_gub_expand_nonaccount_cookieset_to_suspected() {
	var cs = pii_vault.aggregate_data.session_cookie_store[my_domain];
	var acct_cookies = [];
	
	for (var k = 0; k < pending_enabled_cookies_array.length; k++) {
	    var cookie_key = pending_enabled_cookies_array[k];
	    if (cs.cookies[cookie_key].cookie_class != "during" &&
		cs.cookies[cookie_key].is_part_of_account_cookieset != true) {
		// Enabling this cookie caused the session to be logged-in when
		// we kept suppressing original disabled_cookies. Thus,
		// these cookies must be in-fact part of account-cookiesets
		acct_cookies.push(cookie_key);
	    }
	}
	
	for (var i = 0; i < acct_cookies.length; i++) {
	    cs.cookies[acct_cookies[i]].is_part_of_account_cookieset = true;
	    if (expand_state_discovered_cookies.indexOf(acct_cookies[i]) == -1) {
		expand_state_discovered_cookies.push(acct_cookies[i]);
	    }
	}
	
	flush_session_cookie_store();
	store_intermediate_state();
	return acct_cookies;
    }

    function commit_gub_expand_nonaccount_cookieset() {
	var cs_array = [disabled_cookies.slice(0), expand_state_disabled_cookies.slice(0)];
	ns_a_GUB_cookiesets_array.push(cs_array);

	// Calculating binary_cookieset once again because either GUB/LLB would have caused to enter
	// expand-state. So corresponding bin_cs is in either curr_decimal_cs, curr_gub_decimal_cs.
	var rc = convert_cookie_array_to_binary_cookieset(disabled_cookies, suspected_account_cookies_array);

	ns_a_GUB_decimal_cookiesets.push([rc.decimal_cookieset,
					  pending_curr_decimal_cs]);
	
	store_intermediate_state();
    }


    function update_cookie_status(are_usernames_present, bool_pwd_box_present) {
	bool_pwd_box_present = (bool_pwd_box_present == undefined) ? false : bool_pwd_box_present; 

	if (my_state == "st_start_with_no_cookies") {
	    if (!are_usernames_present) {
		console.log("APPU DEBUG: VERIFIED, ACCOUNT-COOKIES are present in default-cookie-store");
	    }
	    else {
		console.log("APPU DEBUG: VERIFIED, ACCOUNT-COOKIES are *NOT* present in default-cookie-store");
		report_fatal_error("account-cookies are not in default-cookie-store OR usernames are not present");		
	    }
	}
	else if (my_state == "st_suspected_cookies_pass_test") {
	    pending_are_usernames_present = are_usernames_present;

	    if (are_usernames_present) {
		console.log("APPU DEBUG: EXPECTED: ACCOUNT-COOKIES are present in 'DURING' cookies");
	    }
	    else {
		console.log("APPU DEBUG: NOT-EXPECTED: Not all ACCOUNT-COOKIES are present in 'DURING' cookies");
	    }
	}
	else if (my_state == "st_suspected_cookies_block_test") {
	    pending_are_usernames_present = are_usernames_present;
	    pending_bool_pwd_box_present_suspected_block = bool_pwd_box_present;

	    if (!are_usernames_present) {
		console.log("APPU DEBUG: EXPECTED: ACCOUNT-COOKIES are *NOT* present in non-'DURING' cookies");
		
		// s_a_GUB_cookiesets_array.push(disabled_cookies.slice(0));
		rc = add_to_set(disabled_cookies, 
				s_a_GUB_cookiesets_array, 
				s_a_GUB_decimal_cookiesets, 
				suspected_account_cookies_array,
				undefined);
	    }
	    else {
		// This is unexpected branch. This means that even after blocking DURING cookies,
		// the user was found to be logged-in. That means we have not detected DURING cookies 
		// correctly. This will most likely cause the code to go into "expand-state" and
		// expand SUSPECTED account-cookies.
		console.log("APPU DEBUG: NOT-EXPECTED: ACCOUNT-COOKIES are present in non-'DURING' cookies");
		// report_fatal_error("account cookies in non-'during' cookies");
	    }
	}
	else if (my_state == "st_testing") {
	    console.log("APPU DEBUG: Disabled cookies (" + JSON.stringify(disabled_cookies) + "): ");
	    console.log("APPU DEBUG: Am I logged-in?: " + are_usernames_present);

	    if (!are_usernames_present) {
		console.log("APPU DEBUG: Here here");
	    }
	    
	    var enabled_cookies = convert_binary_cookieset_to_cookie_array(curr_binary_cs, 
									   suspected_account_cookies_array, 
									   true);
	    
	    if (are_usernames_present) {
		s_a_LLB_cookiesets_array.push(enabled_cookies.slice(0));
	    }
	    
	    console.log("APPU DEBUG: Enabled cookies (" + JSON.stringify(enabled_cookies) + "): ");
	    
	    binary_cookiesets.splice(current_cookiesets_test_index, 1);
	    decimal_cookiesets.splice(current_cookiesets_test_index, 1);
	    
	    console.log("APPU DEBUG: Cookiesets remaining to be tested: " + binary_cookiesets.length);
	    
	    tot_cookiesets_tested += 1;
	    tot_cookiesets_tested_overall += 1;
	}
	else if (my_state == "st_LLB_cookiesets_block_DISABLED_and_NONDURING" ||
		 my_state == "st_LLB_cookiesets_block_DISABLED") {

	    console.log("APPU DEBUG: (" + my_state + ")Is user logged-in for this cookieset?(" + 
			JSON.stringify(disabled_cookies) + 
			"): " + are_usernames_present);

	    pending_are_usernames_present.push(are_usernames_present);
	    pending_disabled_cookies.push(disabled_cookies.slice(0));
	    pending_enabled_cookies_array.push(enabled_cookies_array.slice(0));
	    pending_curr_decimal_cs.push(curr_decimal_cs);
	    pending_bool_pwd_box_present.push(bool_pwd_box_present);
	    
	    //update the status first.
	    if (are_usernames_present) {
		if (bool_pwd_box_present) {
		    console.log("APPU DEBUG: Found restrictive cookieset: " + 
				JSON.stringify(disabled_cookies));
		}
	    }

	}
	else if (my_state == "st_expand_LLB_suspected_account_cookies") {
	    console.log("APPU DEBUG: (" + my_state + ")Is user logged-in for this cookieset?" + 
			JSON.stringify(expand_state_disabled_cookies) + 
			"): " + are_usernames_present);

	    pending_are_usernames_present = are_usernames_present;
	    pending_disabled_cookies = disabled_cookies;
	    pending_enabled_cookies_array = enabled_cookies_array;
	    pending_curr_decimal_cs = curr_expand_state_decimal_cs;
	    pending_bool_pwd_box_present = bool_pwd_box_present;
	    
	    //update the status first.
	    if (are_usernames_present) {
		if (bool_pwd_box_present) {
		    console.log("APPU DEBUG: Found restrictive cookieset: " + 
				JSON.stringify(expand_state_disabled_cookies));
		}
	    }

	    tot_expand_state_cookiesets_tested_overall += 1;
	}
	else if (my_state == "st_expand_GUB_suspected_account_cookies") {
	    console.log("APPU DEBUG: (" + my_state + ")Is user logged-in for this cookieset?" + 
			JSON.stringify(expand_state_disabled_cookies) + 
			"): " + are_usernames_present);

	    pending_are_usernames_present = are_usernames_present;
	    pending_disabled_cookies = disabled_cookies;
	    pending_enabled_cookies_array = enabled_cookies_array;
	    pending_curr_decimal_cs = curr_expand_state_gub_decimal_cs;
	    pending_bool_pwd_box_present = bool_pwd_box_present;

	    if (are_usernames_present) {
		console.log("APPU DEBUG: User is still logged-in after blocking EXAPAND-STATE-GUB-COOKIE-SET");
		console.log("APPU DEBUG: We need to transfer this EXPAND-STATE-GUB-COOKIE-SET to 'suspected' array: " + 
			    JSON.stringify(enabled_cookies_array));
	    }
	    else {
		console.log("APPU DEBUG: We do NOT NEED to transfer EXPAND-STATE-GUB-COOKIE-SET to 'suspected' array: " + 
			    JSON.stringify(enabled_cookies_array));
	    }

	    tot_expand_state_cookiesets_tested_overall += 1;
	}
	else if (my_state == "st_GUB_cookiesets_block_DISABLED_and_NONDURING" ||
		 my_state == "st_GUB_cookiesets_block_DISABLED") {

	    pending_are_usernames_present.push(are_usernames_present);
	    pending_disabled_cookies.push(disabled_cookies.slice(0));
	    pending_enabled_cookies_array.push(enabled_cookies_array.slice(0));
	    pending_curr_decimal_cs.push(curr_gub_decimal_cs);
	    pending_bool_pwd_box_present.push(bool_pwd_box_present);
	    
	    if (are_usernames_present) {
		console.log("APPU DEBUG: User is still logged-in after blocking GUB-COOKIE-SET");
		console.log("APPU DEBUG: We do NOT NEED to test any subsets of this GUB-COOKIE-SET: " + 
			    JSON.stringify(disabled_cookies));
	    }
	    else {
		console.log("APPU DEBUG: User logged-out after blocking GUB-COOKIE-SET");
		console.log("APPU DEBUG: We NEED to test subsets for this GUB-COOKIE-SET: " + 
			    JSON.stringify(disabled_cookies));
	    }
	    
	}
    }
    
    
    function get_url() {
	return my_url;
    }


    function set_state(curr_state) {
	my_state = curr_state;
    }
    
    
    function get_state() {
	return my_state;
    }
    

    // Will tell what would be next state after current state AND
    // also goto that state.
    function goto_next_state(was_result_expected) {
	if (!has_error_occurred) {
	    var cit = cookie_investigating_tabs[my_tab_id];
	    cit.bool_state_in_progress = false;
	    return next_state(was_result_expected);
	}

	return "st_terminate";
    }

    // Following should initialize:
    // non_suspected_account_cookies_array: All the non-during class cookies except those non-during 
    //                                             cookies already suspected to be account cookies.
    // tot_ns_cookies                    : Length of above array
    function initialize_expand_state_parameters() {
	var non_suspected_cookies = get_non_account_cookies(my_domain, suspected_account_cookies_array);
	non_suspected_account_cookies_array = Object.keys(non_suspected_cookies);
	tot_ns_cookies = non_suspected_account_cookies_array.length;
    }
    

    function reset_for_llb_cookieset_testing(reset_stats) {
	if (reset_stats) {
	    tot_cookiesets_tested_this_round = 0;
	}
		
	disabled_cookies = undefined;

	pending_are_usernames_present = [];
	pending_disabled_cookies = [];
	pending_enabled_cookies_array = [];
	pending_curr_decimal_cs = [];
	pending_bool_pwd_box_present = [];
	pending_result_significance = undefined;
    }


    function reset_for_gub_cookieset_testing(reset_stats) {
	if (reset_stats) {
	    tot_cookiesets_tested_this_round = 0;
	}

	disabled_cookies = undefined;

	pending_are_usernames_present = [];
	pending_disabled_cookies = [];
	pending_enabled_cookies_array = [];
	pending_curr_decimal_cs = [];
	pending_bool_pwd_box_present = [];
	pending_result_significance = undefined;
    }

    function reset_for_llb_expand_cookies_testing(reset_stats) {
	if (reset_stats) {
	    tot_cookiesets_tested_this_round = 0;
	}
		
	expand_state_disabled_cookies = undefined;
	
	pending_are_usernames_present = undefined;
	pending_disabled_cookies = undefined;
	pending_enabled_cookies_array = undefined;
	pending_curr_decimal_cs = undefined;
	pending_bool_pwd_box_present = undefined;
	pending_result_significance = undefined;
    }

    function reset_for_gub_expand_cookies_testing(reset_stats) {
	if (reset_stats) {
	    tot_cookiesets_tested_this_round = 0;
	}
		
	expand_state_disabled_cookies = undefined;
	
	pending_are_usernames_present = undefined;
	pending_disabled_cookies = undefined;
	pending_enabled_cookies_array = undefined;
	pending_curr_decimal_cs = undefined;
	pending_bool_pwd_box_present = undefined;
	pending_result_significance = undefined;
    }

    function reset_for_only_suspected_cookies_pass() {
	pending_are_usernames_present = undefined;
	pending_result_significance = undefined;
    }

    function reset_for_only_suspected_cookies_block() {
	pending_are_usernames_present = undefined;
	pending_result_significance = undefined;
    }

    // Accepts next_state that would be set and checks if the test parameters
    // can be generated for that state.
    //
    // Returns:
    // "attempt_next_state" : With current parameters, switching to this state is not possible.
    //                        Try next state logical state according to state machine. 
    // "attempt_same_state" : Something has changed such as num_cookies_pass_for_round or
    //                        num_cookies_drop_for_round. But still attempt the same state.
    // "done"       : Cookiesets testing for this web application is over.
    //                Why it is over varies from state to state.
    // "error"      : Some error occurred. Stop testing.
    // "success"    : Attempt switching to this state is successful.
    //                Necessary variables such as curr_binary_cs, curr_decimal_cs, disabled_cookies, and all 
    //                other state specific variables are set properly.
    function attempt_switching_state_to(attempt_state) {
	if (attempt_state == "st_testing") {
	    if (binary_cookiesets.length == 0) {
		console.log("APPU DEBUG: Finished testing all cookiesets");
		return "done";
	    }

	    current_cookiesets_test_index = 0;

	    curr_binary_cs = binary_cookiesets[current_cookiesets_test_index];
	    curr_decimal_cs = decimal_cookiesets[current_cookiesets_test_index];
	    disabled_cookies = convert_binary_cookieset_to_cookie_array(binary_cookiesets[current_cookiesets_test_index],
									suspected_account_cookies_array);
	    return "success";
	}
	else if (attempt_state == "st_LLB_cookiesets_block_DISABLED_and_NONDURING") {	    
	    if (last_non_verification_state != "st_LLB_cookiesets_block_DISABLED" &&
		last_non_verification_state != "st_LLB_cookiesets_block_DISABLED_and_NONDURING") {
		reset_for_llb_cookieset_testing(true);
	    }

	    if (tot_cookiesets_tested_this_round > (tot_cookies * 3)) {
		console.log("APPU DEBUG: Tested " + tot_cookiesets_tested_this_round + 
			    " GUB cookiesets for this round, going to next state: ");
		return "attempt_next_state";
	    }

	    var rc = get_next_binary_cookieset_X(curr_binary_cs, 
						 num_cookies_drop_for_round, 
						 tot_cookies, 
						 s_a_LLB_decimal_cookiesets,
						 s_na_LLB_decimal_cookiesets,
						 s_a_GUB_decimal_cookiesets,
						 s_na_GUB_decimal_cookiesets,
						 "normal",
						 cookiesets_optimization_stats);
	    
	    if (rc == 0) {
		console.log("APPU DEBUG: LLB Cookieset testing round finished for: " + num_cookies_drop_for_round);

		num_cookies_drop_for_round += 1;
		store_intermediate_state(true);

		// Adding (num_cookies_pass_for_round - 1) instead of num_cookies_pass_for_round
		// because I do not finish GUB rounds. I stop them as soon as tested_cookiesets in
		// a round exceeds tot_cookies. Thus num_cookies_pass_for_round does not necessarily
		// say finished round. The round could very well be in progress.
		if ((num_cookies_drop_for_round + (num_cookies_pass_for_round - 1)) > tot_cookies) {
		    console.log("APPU DEBUG: (cookieset testing) Number of cookies to drop exceed total cookies");
		    console.log("APPU DEBUG: Cookieset testing successfully finished. No more cookiesets generated");

		    bool_is_cookie_testing_done = true;

		    return "done";
		}

		curr_binary_cs = undefined;
		curr_decimal_cs = undefined;

		return "attempt_next_state";
	    }
	    else if (rc == 1) {
		console.log("APPU DEBUG: LLB No more cookiesets generated for: " + num_cookies_drop_for_round);

		num_cookies_drop_for_round += 1;
		store_intermediate_state(true);

		if ((num_cookies_drop_for_round + (num_cookies_pass_for_round - 1)) > tot_cookies) {
		    console.log("APPU DEBUG: LLB (cookieset testing) Number of cookies to drop exceed total cookies");
		    console.log("APPU DEBUG: Cookieset testing successfully finished. No more cookiesets generated");
		    bool_is_cookie_testing_done = true;
		    return "done";
		}
		curr_binary_cs = undefined;
		curr_decimal_cs = undefined;

		return "attempt_next_state";
		// return "attempt_same_state";
	    }
	    else if (rc == -1) {
		console.log("APPU Error: (" + state + ")Could not generate cookiesets for round: " + num_cookies_drop_for_round
			    + "(round = number of cookies to be dropped)");
		report_fatal_error(state + "-cookiesets-generation-error-at-X=" + num_cookies_drop_for_round);
		has_error_occurred = true;
		return "error";
	    }
	    else {
		reset_for_llb_cookieset_testing(false);

		curr_binary_cs = rc.binary_cookieset;
		curr_decimal_cs = rc.decimal_cookieset;
		disabled_cookies = convert_binary_cookieset_to_cookie_array(curr_binary_cs,
									    suspected_account_cookies_array);
		console.log("APPU DEBUG: Next decimal cookieset: " + curr_decimal_cs);
		return "success";
	    }
	}
	else if (attempt_state == "st_GUB_cookiesets_block_DISABLED") {
	    if (last_non_verification_state != "st_GUB_cookiesets_block_DISABLED" &&
		last_non_verification_state != "st_GUB_cookiesets_block_DISABLED_and_NONDURING") {
		reset_for_gub_cookieset_testing(true);
	    }

	    if (tot_cookiesets_tested_this_round > tot_cookies) {
		console.log("APPU DEBUG: Tested " + tot_cookiesets_tested_this_round + 
			    " GUB cookiesets for this round, going to next state: ");
		return "attempt_next_state";
	    }

	    var rc = get_next_gub_binary_cookieset_X(curr_gub_binary_cs, 
						     num_cookies_pass_for_round, 
						     tot_cookies, 
						     s_a_LLB_decimal_cookiesets,
						     s_na_LLB_decimal_cookiesets,
						     s_a_GUB_decimal_cookiesets,
						     s_na_GUB_decimal_cookiesets,
						     "normal",
						     cookiesets_optimization_stats);
	    
	    if (rc == 0) {
		console.log("APPU DEBUG: GUB Cookieset testing round finished for: " + num_cookies_pass_for_round);

		num_cookies_pass_for_round += 1;
		store_intermediate_state(true);

		curr_gub_binary_cs = undefined;
		curr_gub_decimal_cs = undefined;

		if ((num_cookies_drop_for_round + (num_cookies_pass_for_round - 1)) > tot_cookies) {
		    console.log("APPU DEBUG: (cookieset testing) Number of cookies to pass exceed total cookies");
		    return "done";
		}
		return "attempt_same_state";
	    }
	    else if (rc == 1) {
		console.log("APPU DEBUG: GUB Cookieset testing round finished for: " + num_cookies_pass_for_round);

		num_cookies_pass_for_round += 1;
		store_intermediate_state(true);

		curr_gub_binary_cs = undefined;
		curr_gub_decimal_cs = undefined;

		if ((num_cookies_drop_for_round + (num_cookies_pass_for_round - 1)) > tot_cookies) {
		    console.log("APPU DEBUG: GUB (cookieset testing) Number of cookies to pass exceed total cookies");
		    return "done";
		}

		return "attempt_same_state";
	    }
	    else if (rc == -1) {
		console.log("APPU Error: (" + state + ")Could not generate cookiesets for round: " + num_cookies_pass_for_round
			    + "(round = number of cookies to be passed)");
		report_fatal_error(state + "-cookiesets-generation-error-at-X=" + num_cookies_pass_for_round);
		has_error_occurred = true;
		return "error";
	    }
	    else {
		reset_for_gub_cookieset_testing(false);

		curr_gub_binary_cs = rc.binary_cookieset;
		curr_gub_decimal_cs = rc.decimal_cookieset;
		disabled_cookies = convert_binary_cookieset_to_cookie_array(curr_gub_binary_cs,
									    suspected_account_cookies_array);


		var test_s_na_GUB_cookiesets_array = s_na_GUB_cookiesets_array.slice(0);
		test_s_na_GUB_cookiesets_array.push(disabled_cookies.slice(0));

		var rc = check_sanity_s_na_GUB(test_s_na_GUB_cookiesets_array, suspected_account_cookies_array);
		if (!rc) {
		    console.log("Here here: Some error, unnecessary s_na_GUB detected");
		}

		console.log("APPU DEBUG: Next decimal cookieset: " + curr_gub_decimal_cs);
		return "success";
	    }
	}
	else if (attempt_state == "st_expand_LLB_suspected_account_cookies") {
	    if (!bool_expand_state_initialized) {
		initialize_expand_state_parameters();
		bool_expand_state_initialized = true;
	    }

	    if (last_non_verification_state != "st_expand_LLB_suspected_account_cookies") {
		reset_for_llb_expand_cookies_testing(true);
	    }


	    var rc = convert_cookie_array_to_binary_cookieset(disabled_cookies, suspected_account_cookies_array);
	    var dc_decimal_cs = rc.decimal_cookieset;

	    var rc = get_next_binary_cookieset_X(curr_expand_state_binary_cs, 
						 expand_state_num_cookies_drop_for_round, 
						 tot_ns_cookies, 
						 [],
						 ns_na_LLB_decimal_cookiesets,
						 ns_a_GUB_decimal_cookiesets,
						 [],
						 "expand",
						 cookiesets_optimization_stats,
						 dc_decimal_cs);
	    
	    if (rc == 0) {
		console.log("APPU DEBUG: Cookieset testing round finished for: " + 
			    expand_state_num_cookies_drop_for_round);

		expand_state_num_cookies_drop_for_round += 1;
		if (expand_state_num_cookies_drop_for_round > tot_ns_cookies) {
		    console.log("APPU DEBUG: (expand state) Number of cookies to drop exceed num-non-during cookies");
		    return "error";
		}

		curr_expand_state_binary_cs = undefined;
		curr_expand_state_decimal_cs = undefined;

		return "attempt_next_state";
	    }
	    else if (rc == 1) {
		// This could mean that in previous incomplete attempt, we have already tested
		// cookiesets for this round of expand_state_num_cookies_drop_for_round
		console.log("APPU DEBUG: No cookiesets generated for expand-state round(" + 
			    expand_state_num_cookies_drop_for_round + ")");

		expand_state_num_cookies_drop_for_round += 1;
		if (expand_state_num_cookies_drop_for_round > tot_ns_cookies) {
		    console.log("APPU DEBUG: (expand state) Number of cookies to drop exceed num-non-during cookies");
		    return "error";
		}

		curr_expand_state_binary_cs = undefined;
		curr_expand_state_decimal_cs = undefined;
		return "attempt_next_state";
	    }
	    else if (rc == -1) {
		console.log("APPU Error: (" + state + ")Could not generate cookiesets for round: " + 
			    expand_state_num_cookies_drop_for_round
			    + "(round = number of cookies to be dropped)");
		report_fatal_error(state + "-cookiesets-generation-error-at-X=" + 
				   expand_state_num_cookies_drop_for_round);
		has_error_occurred = true;
		return "error";
	    }
	    else {		
		reset_for_llb_expand_cookies_testing(false);
		
		curr_expand_state_binary_cs = rc.binary_cookieset;
		curr_expand_state_decimal_cs = rc.decimal_cookieset;
		expand_state_disabled_cookies = 
		    convert_binary_cookieset_to_cookie_array(curr_expand_state_binary_cs,
							     non_suspected_account_cookies_array);
		console.log("APPU DEBUG: Next decimal cookieset: " + curr_expand_state_decimal_cs);
		return "success";
	    }
	}
	else if (attempt_state == "st_expand_GUB_suspected_account_cookies") {
	    if (!bool_expand_state_initialized) {
		initialize_expand_state_parameters();
		bool_expand_state_initialized = true;
	    }

	    if (last_non_verification_state != "st_expand_GUB_suspected_account_cookies") {
		reset_for_gub_expand_cookies_testing(true);
	    }

	    if (tot_cookiesets_tested_this_round > tot_ns_cookies) {
		console.log("APPU DEBUG: Tested " + tot_cookiesets_tested_this_round + 
			    " EXPAND-STATE-GUB cookiesets for this round, going to next state: ");
		return "attempt_next_state";
	    }


	    var rc = convert_cookie_array_to_binary_cookieset(disabled_cookies, suspected_account_cookies_array);
	    var dc_decimal_cs = rc.decimal_cookieset;

	    var rc = get_next_gub_binary_cookieset_X(curr_expand_state_gub_binary_cs, 
						     expand_state_num_cookies_pass_for_round, 
						     tot_ns_cookies, 
						     [],
						     ns_na_LLB_decimal_cookiesets,
						     ns_a_GUB_decimal_cookiesets,
						     [],
						     "expand",
						     cookiesets_optimization_stats,
						     dc_decimal_cs);
	    
	    if (rc == 0) {
		console.log("APPU DEBUG: EXPAND-STATE-GUB Cookieset testing round finished for: " + 
			    expand_state_num_cookies_pass_for_round);

		expand_state_num_cookies_pass_for_round += 1;

		curr_expand_state_gub_binary_cs = undefined;
		curr_expand_state_gub_decimal_cs = undefined;

		if (expand_state_num_cookies_pass_for_round > tot_ns_cookies) {
		    console.log("APPU DEBUG: (expand state) Number of cookies to pass exceed num-non-during cookies");
		    return "error";
		}

		return "attempt_next_state";
	    }
	    else if (rc == 1) {
		console.log("APPU DEBUG: EXPAND-STATE-GUB Cookieset testing round finished for: " + 
			    expand_state_num_cookies_pass_for_round);

		expand_state_num_cookies_pass_for_round += 1;

		curr_expand_state_gub_binary_cs = undefined;
		curr_expand_state_gub_decimal_cs = undefined;

		if (expand_state_num_cookies_pass_for_round > tot_ns_cookies) {
		    console.log("APPU DEBUG: (expand state) Number of cookies to pass exceed num-non-during cookies");
		    return "error";
		}

		return "attempt_next_state";
	    }
	    else if (rc == -1) {
		console.log("APPU Error: (" + state + ")Could not generate cookiesets for round: " + 
			    expand_state_num_cookies_pass_for_round +
			    + "(round = number of cookies to be passed)");
		report_fatal_error(state + "-cookiesets-generation-error-at-X=" + expand_state_num_cookies_pass_for_round);
		has_error_occurred = true;
		return "error";
	    }
	    else {
		reset_for_gub_expand_cookies_testing(false);

		curr_expand_state_gub_binary_cs = rc.binary_cookieset;
		curr_expand_state_gub_decimal_cs = rc.decimal_cookieset;

		expand_state_disabled_cookies = 
		    convert_binary_cookieset_to_cookie_array(curr_expand_state_gub_binary_cs,
							     non_suspected_account_cookies_array);

		console.log("APPU DEBUG: Next decimal cookieset: " + curr_expand_state_gub_decimal_cs);
		return "success";
	    }
	}
	return "error";
    }


    // Accepts:
    // tested_state: State for which we want to commit result. Could be my_state or last_non_verification_state
    // is_result_significant: true or false
    // 
    // Returns:
    // false: Reset to start state has NOT happened
    // true: Reset to start state has happened
    function commit_result(tested_state, is_result_significant) {
	if (tested_state == "st_suspected_cookies_pass_test") {
	    // do nothing
	}
	else if (tested_state == "st_suspected_cookies_block_test") {
	    if (!is_result_significant) {
		if (pending_bool_pwd_box_present_first_verification == false &&
		    pending_bool_pwd_box_present_suspected_block == true) {
		    bool_pwd_box_should_be_present = true;
		    console.log("APPU DEBUG: @@@@ A password box should be present when user is not logged-in @@@@");
		}
		else {
		    bool_pwd_box_should_be_present = false;
		    console.log("APPU DEBUG: @@@@ A password box should *NOT* be present when user is not logged-in @@@@");
		}
	    }
	}
	else if (tested_state == "st_LLB_cookiesets_block_DISABLED_and_NONDURING") {
	    if (is_result_significant) {
		console.log("APPU Error: Totally not expected, terminating");
		report_fatal_error("llb-disable-nonduring-nonsignificant-result");
		my_state = "st_terminate";
	    }
	    else {
		commit_llb_nonaccount_cookieset();
	    }
	}
	else if (tested_state == "st_LLB_cookiesets_block_DISABLED") {
	    if (is_result_significant) {
		commit_llb_account_cookieset();
	    }
	    else {
		console.log("APPU Error: Totally not expected, terminating");
		report_fatal_error("llb-disable-nonsignificant-result");
		my_state = "st_terminate";
	    }
	}
	else if (tested_state == "st_GUB_cookiesets_block_DISABLED") {
	    if (is_result_significant) {
		console.log("APPU Error: Totally not expected, terminating");
		report_fatal_error("gub-block-disabled-significant-result");
		my_state = "st_terminate";
	    }
	    else {
		commit_gub_account_cookieset();
	    }
	}
	else if (tested_state == "st_GUB_cookiesets_block_DISABLED_and_NONDURING") {
	    if (is_result_significant) {
		commit_gub_nonaccount_cookieset();
	    }
	    else {
		console.log("APPU Error: Totally not expected, terminating");
		report_fatal_error("gub-block-disabled-nonduring-nonsignificant-result");
		my_state = "st_terminate";
	    }
	}
	else if (tested_state == "st_expand_LLB_suspected_account_cookies") {
	    if (is_result_significant) {
		var acct_cookies = shift_llb_expand_account_cookieset_to_suspected();
		console.log("APPU DEBUG: Detected account cookies in non-DURING cookies. Resetting to start state");
		reset_to_start_state(acct_cookies);
		return true;
	    }
	    else {
		commit_llb_expand_nonaccount_cookieset();
	    }
	}
	else if (tested_state == "st_expand_GUB_suspected_account_cookies") {
	    if (is_result_significant) {
		var acct_cookies = shift_gub_expand_nonaccount_cookieset_to_suspected();
		console.log("APPU DEBUG: (GUB-EXPAND) Detected account cookies in non-DURING cookies." + 
			    " Resetting to start state");
		reset_to_start_state(acct_cookies);
		return true;
	    }
	    else {
		commit_gub_expand_nonaccount_cookieset();
	    }
	}
	return false;
    }

    
    // Returns: 'yes' or 'no'
    function is_user_logged_in(is_username_present, is_pwd_box_present, should_pwd_box_be_present) {
	if (is_username_present) {
	    if (should_pwd_box_be_present) {
		if (is_pwd_box_present) {
		    // Username is present, and password box IS present.
		    // Password box should NOT be present when user is logged-in.
		    // So user is NOT logged-in
		    return "no";
		}
		else {
		    // Username is present, and password box is not present.
		    // Password box should be present when user is NOT logged-in.
		    // So user is logged-in
		    return "yes";
		}
	    }
	    else {
		if (is_pwd_box_present) {
		    // Even if the password-box should not be present when user is not logged-in
		    // we see a password box. That means user cannot use the webservice.
		    // This happens for cases like Gmail when should_pwd_box_be_present is usually "no"
		    // But still sometimes, it is shown based on presence or absence of some cookies.
		    return "no";
		}
		return "yes";
	    }
	}
	else {
	    // Username is not present. So user is not logged-in.
	    return "no";
	}
	return "no";
    }


    // Return values:
    // "yes"    : User is logged in
    // "no"     : User is NOT logged in
    // "error"  : Some error, terminate
    // "expand" : Goto expand state
    function decide_loggedin_status(curr_state) {
	var error_states = [
			    "st_cookie_test_start",
			    "st_start_with_no_cookies",
			    "st_testing", 
			    "st_terminate",
			    ];

	if (error_states.indexOf(curr_state) != -1) {
	    console.log("APPU Error: decide_loggedin_status() should not be called with this state: " + my_state);
	    report_fatal_error("decide_loggedin_status-called-from-wrong-state-" + my_state);
	    return "error";
	}

	if (curr_state == "st_suspected_cookies_block_test" ||
	    curr_state == "st_suspected_cookies_pass_test") {
	    return is_user_logged_in(pending_are_usernames_present,
				     pending_bool_pwd_box_present,
				     bool_pwd_box_should_be_present);
	}
	else if (curr_state == "st_verification_epoch" ||
	    curr_state == "st_expand_LLB_suspected_account_cookies" ||
	    curr_state == "st_expand_GUB_suspected_account_cookies") {
	    // In all these cases, pending_* variables are not arrays.
	    return is_user_logged_in(pending_are_usernames_present,
				     pending_bool_pwd_box_present,
				     bool_pwd_box_should_be_present);
	}
	else if (curr_state == "st_GUB_cookiesets_block_DISABLED" ||
	    curr_state == "st_LLB_cookiesets_block_DISABLED_and_NONDURING") {
	    // In these both states, only ZEROth index is present.
	    return is_user_logged_in(pending_are_usernames_present[0],
				     pending_bool_pwd_box_present[0],
				     bool_pwd_box_should_be_present);
	}
	else if (curr_state == "st_LLB_cookiesets_block_DISABLED" ||
		 curr_state == "st_GUB_cookiesets_block_DISABLED_and_NONDURING") {
	    // In these both states, both ZEROth and FIRST indexes are present
	    var blocked_disabled_and_nonduring = undefined;
	    var blocked_disabled = undefined;
	    var rc1 = undefined;
	    var rc2 = undefined;

	    var rc1 = is_user_logged_in(pending_are_usernames_present[0],
					pending_bool_pwd_box_present[0],
					bool_pwd_box_should_be_present);
	    var rc2 = is_user_logged_in(pending_are_usernames_present[1],
					pending_bool_pwd_box_present[1],
					bool_pwd_box_should_be_present);

	    if (curr_state == "st_LLB_cookiesets_block_DISABLED") {
		blocked_disabled_and_nonduring = rc1;
		blocked_disabled = rc2;
	    }
	    else if (curr_state == "st_GUB_cookiesets_block_DISABLED_and_NONDURING") {
		blocked_disabled_and_nonduring = rc2;
		blocked_disabled = rc1;
	    }

	    if (blocked_disabled_and_nonduring == "yes" && 
		blocked_disabled == "yes") {
		return "yes";
	    }
	    else {
		if (blocked_disabled_and_nonduring == "no" && 
		    blocked_disabled == "no") {
		    return "no";
		}
		else {
		    if (blocked_disabled_and_nonduring == "no" && 
			blocked_disabled == "yes") {
			return "expand";
		    }
		    else {
			return "error";
		    }
		}
	    }
	}

	return "error";
    }

    // Returns: 
    // "yes"              : When result is assuredly significant.
    // "no"               : When result is assuredly NOT significant.
    // "expand"           : Goto 'expand' state
    // "possibly_yes"     : When result may be significant, but need verification that user is still logged-in.
    // "possibly_no"      : When result may NOT be significant, but need verification that user is still logged-in.
    // "possibly_expand"  : Means in the last test user was logged-out, but if verification proves that
    //                       user is still logged-in then we need to switch to "EXPAND"
    // "dont_care"        : No useful result for the calling function.
    // "error"            : Something went terribly wrong. Big error.
    //
    // Any state with "possibly_" prefixed to it needs a verification execution OR some other state execution
    //  (such as st_GUB_cookiesets_block_DISABLED_and_NONDURING) before converting
    //  possibly_xxx to xxx
    //
    function decide_result_significance(curr_state) {
	var dontcare_states = [
			       "st_cookie_test_start", 
			       "st_start_with_no_cookies",
			       "st_testing",
			       "st_terminate",
			       "st_verification_epoch",
			     ];

	if (dontcare_states.indexOf(curr_state) != -1) {
	    return "dont_care";
	}

	if (curr_state == "st_suspected_cookies_pass_test") {
	    var rc = decide_loggedin_status(curr_state);	    
	    if (rc == "no") {
		// It is necessary to zero out all disabled_cookies because currently
		// they will contain all 'non-DURING' cookies. 
		// But expand-state will check cookiesets in 'non-DURING' cookies.
		disabled_cookies = [];
		return "possibly_expand";
	    }
	    else if (rc == "yes") {
		// Expected, nothing important
		return "no";
	    }
	    else {
		console.log("APPU Error: Unknow return code for suspected-pass. RC: " + rc);
		report_fatal_error("suspected-pass-unknown-return-code-" + rc);
		return "error";
	    }
	}
	else if (curr_state == "st_suspected_cookies_block_test") {
	    var rc = decide_loggedin_status(curr_state);	    
	    if (rc == "no") {
		return "possibly_no";
	    }
	    else if (rc == "yes") {
		// Not expected, switch to expand
		// Don't zero out disabled cookies since we want to keep disabling them.
		// disabled_cookies = [];
		return "expand";
	    }
	    else {
		console.log("APPU Error: Unknow return code for suspected-pass. RC: " + rc);
		report_fatal_error("suspected-pass-unknown-return-code-" + rc);
		return "error";
	    }
	}
	else if (curr_state == "st_GUB_cookiesets_block_DISABLED_and_NONDURING") {
	    var rc = decide_loggedin_status(curr_state);	    
	    if (rc == "yes") {
		return "yes";
	    }
	    else if (rc == "no") {
		// Control should not come here if in both states, the user is not
		// logged-in. Right after executing first GUB substate, the control
		// should have gone to the next cookieset.
		console.log("APPU Error: Control should not have come here. Both LLB substates need not be executed");
		report_fatal_error("both-llb-states-need-not-be-executed-user-not-logged-in");
		return "error";
	    }
	    else {
		if (rc == "error") {
		    console.log("APPU Error: GUB, blocked disabled & nonduring, Cant decide user's login status");
		    report_fatal_error("gub-blocked-disabled-nonduring-cant-decide-user-login-status");
		    return "error";
		}
		else if (rc == "expand") {
		    // We convert expand to possibly_expand as user is logged-out in this state.
		    // We need to first make sure that user is logged out due to cookisets and
		    // not because of user-action. Thus, need to execute verification epoch.
		    return "possibly_expand";
		}
		else {
		    console.log("APPU Error: GUB, blocked disabled & nonduring, " + 
				"Unknown result from decide_loggedin_status: " + rc);
		    report_fatal_error("gub-blocked-disabled-nonduring-unknown-return-code-" + rc);
		    return "error";
		}
	    }
	}
	if (curr_state == "st_GUB_cookiesets_block_DISABLED") {
	    var rc = decide_loggedin_status(curr_state);	    
	    if (rc == "yes") {
		return "possibly_yes";
	    }
	    else if (rc == "no") {
		return "possibly_no";
	    }
	    else {
		console.log("APPU Error: GUB, blocked disabled, Cant decide user's login status");
		report_fatal_error("gub-blocked-disabled-cant-decide-user-login-status");
		return "error";
	    }
	}
	else if (curr_state == "st_LLB_cookiesets_block_DISABLED_and_NONDURING") {
	    var rc = decide_loggedin_status(curr_state);	    
	    if (rc == "yes") {
		return "no";
	    }
	    else if (rc == "no") {
		return "possibly_yes";
	    }
	    else {
		console.log("APPU Error: LLB, blocked disabled & nonduring, Cant decide user's login status");
		report_fatal_error("llb-blocked-disabled-nonduring-cant-decide-user-login-status");
		return "error";
	    }
	}
	else if (curr_state == "st_LLB_cookiesets_block_DISABLED") {
	    var rc = decide_loggedin_status(curr_state);	    
	    if (rc == "yes") {
		// Control should not have come here. If LLB was logged-in in its first
		// substate, then just terminate execution and move on to next cookie-set
		console.log("APPU Error: Control should not have come here. Both GUB substates need not be executed");
		report_fatal_error("both-gub-states-need-not-be-executed-user-not-logged-in");
		return "error";
	    }
	    else if (rc == "no") {
		return "possibly_yes";
	    }
	    else if (rc == "expand") {
		// Last state was logged-in, no need to run verification
		return "expand";
	    }
	    else {
		if (rc == "error") {
		    console.log("APPU Error: LLB, blocked disabled, Cant decide user's login status");
		    report_fatal_error("llb-blocked-disabled-cant-decide-user-login-status");
		}
		return rc;
	    }
	}
	else if (curr_state == "st_expand_LLB_suspected_account_cookies") {
	    var rc = decide_loggedin_status(curr_state);	    
	    if (rc == "yes") {
		return "no";
	    }
	    else if (rc == "no") {
		return "possibly_yes";
	    }
	    else {
		console.log("APPU Error: EXPAND LLB, Cant decide user's login status");
		report_fatal_error("expand-llb-cant-decide-user-login-status");
		return "error";
	    }
	}
	else if (curr_state == "st_expand_GUB_suspected_account_cookies") {
	    var rc = decide_loggedin_status(curr_state);	    
	    if (rc == "yes") {
		return "yes";
	    }
	    else if (rc == "no") {
		return "possibly_no";
	    }
	    else {
		console.log("APPU Error: EXPAND GUB, Cant decide user's login status");
		report_fatal_error("expand-gub-cant-decide-user-login-status");
		return "error";
	    }
	}

	return "error";
    }

    
    function perform_state_transition(curr_state) {
	var state_machine = {
	    "st_testing"                                      : "st_testing",                      
	    "st_cookie_test_start"                            : "st_verification_epoch",                      
	    "st_start_with_no_cookies"                        : "st_verification_epoch",        
	    "st_suspected_cookies_pass_test"                  : "st_suspected_cookies_block_test",        
	    "st_suspected_cookies_block_test"                 : "st_LLB_cookiesets_block_DISABLED_and_NONDURING",        
	    "st_LLB_cookiesets_block_DISABLED_and_NONDURING"  : "st_LLB_cookiesets_block_DISABLED_and_NONDURING",
	    "st_LLB_cookiesets_block_DISABLED"                : "st_LLB_cookiesets_block_DISABLED_and_NONDURING",        
	    "st_GUB_cookiesets_block_DISABLED"                : "st_GUB_cookiesets_block_DISABLED",
	    "st_GUB_cookiesets_block_DISABLED_and_NONDURING"  : "st_GUB_cookiesets_block_DISABLED",
	    "st_expand_LLB_suspected_account_cookies"         : "st_expand_LLB_suspected_account_cookies",
	    "st_expand_GUB_suspected_account_cookies"         : "st_expand_GUB_suspected_account_cookies",         
	};

	var nxs = undefined;

	if (curr_state == "st_suspected_cookies_block_test" &&
	    curr_gub_binary_cs != undefined) {
	    nxs = "st_GUB_cookiesets_block_DISABLED";
	}
	else {
	    nxs = state_machine[curr_state];
	}

	if (nxs == "st_LLB_cookiesets_block_DISABLED_and_NONDURING"   ||
	    nxs == "st_GUB_cookiesets_block_DISABLED"                 ||
	    nxs == "st_expand_LLB_suspected_account_cookies"          ||
	    nxs == "st_expand_GUB_suspected_account_cookies"          ||
	    nxs == "st_testing") {
	    do {
		rc = attempt_switching_state_to(nxs);
		
		if (rc == "success") {
		    return nxs;
		}
		else if (rc == "attempt_next_state") {
		    if (nxs == "st_LLB_cookiesets_block_DISABLED_and_NONDURING") {
			nxs = "st_GUB_cookiesets_block_DISABLED";
			reset_for_gub_cookieset_testing(true);
		    }
		    else if (nxs == "st_GUB_cookiesets_block_DISABLED") {
			nxs = "st_LLB_cookiesets_block_DISABLED_and_NONDURING";
			reset_for_llb_cookieset_testing(true);
		    }
		    else if (nxs == "st_expand_LLB_suspected_account_cookies") {
			nxs = "st_expand_GUB_suspected_account_cookies";
			reset_for_gub_expand_cookies_testing(true);
		    }
		    else if (nxs == "st_expand_GUB_suspected_account_cookies") {
			nxs = "st_expand_LLB_suspected_account_cookies";
			reset_for_llb_expand_cookies_testing(true);
		    }
		    else {
			console.log("APPU Error: Attempt state(" + nxs + ") should not return attempt_next_state");
			report_fatal_error(nxs + "-returned-attempt-next-state");
		    }
		    continue;
		}
		else if (rc == "attempt_same_state") {
		    continue;
		}
		else {
		    nxs = "st_terminate";
		    return nxs;
		}
	    } while(1);
	}
	return nxs;
    }

    function next_state(was_last_result_expected) {
	var rc = -1;
	var temp_state = my_state;
	var crrc = '';
	var result_significance = '';
	var bool_switch_to_expand = false;

	was_last_result_expected = (was_last_result_expected == undefined) ? false : was_last_result_expected;

	if (is_cookie_testing_done()) {
	    my_state = "st_terminate";
	}
	else if (my_state == "st_testing") {
	    my_state = perform_state_transition("st_testing");
	}   
	else if (was_last_result_expected) {
	    if (my_state == "st_verification_epoch") {
		var rc = is_user_logged_in(verification_are_usernames_present,
					   verification_bool_pwd_box_present,
					   bool_pwd_box_should_be_present);
		if (rc == "yes") {
		    if (last_non_verification_state == "st_cookie_test_start") {
			my_state = "st_start_with_no_cookies";
		    }
		    else if (bool_switch_to_testing) {
			my_state = perform_state_transition("st_testing");
		    }
		    else if (last_non_verification_state == "st_start_with_no_cookies") {
			my_state = "st_suspected_cookies_pass_test";
		    }
		    else if (pending_result_significance.indexOf("possibly_") != -1) {
			var is_result_significant = pending_result_significance.split("possibly_")[1];
			if (is_result_significant == "expand") {
			    last_non_expand_state = last_non_verification_state;
			    tot_expand_state_entered += 1;
			    my_state = perform_state_transition("st_expand_GUB_suspected_account_cookies");
			    // my_state = perform_state_transition("st_expand_LLB_suspected_account_cookies");
			}
			else if (is_result_significant == 'yes' ||
				 is_result_significant == 'no') {
			    is_result_significant = (is_result_significant == 'yes') ? true : false;
			    var rc = commit_result(last_non_verification_state, is_result_significant);
			    if (!rc) {
				my_state = perform_state_transition(last_non_verification_state);
			    }
			    else {
				temp_state = "st_verification_epoch";
			    }
			}
			else {
			    console.log("APPU Error: Unknown pending result significance: " + pending_result_significance);
			    report_fatal_error('unknown-prs-' + pending_result_significance +
					       '-lnvs-' + last_non_verification_state);
			    my_state = "st_terminate";
			}
		    }
		    else {
			console.log("APPU Error: Pending result significance does not contain possibly_* " +
				    "(prs: " + pending_result_significance + ", lnvs: " + 
				    last_non_verification_state + ")");
			report_fatal_error('incorrect-psr-' + pending_result_significance + 
					   '-lnvs-' + last_non_verification_state);
			my_state = "st_terminate";
		    }
		}
		else {
		    report_fatal_error("verification-user-not-logged-in");
		}
	    }
	    else {
		var is_result_significant = decide_result_significance(my_state);
		if (is_result_significant == "error") {
		    report_fatal_error('error-result-significant-' + my_state +
				       '-lnvs-' + last_non_verification_state);
		}
		else if (is_result_significant == "dont_care") {
		    my_state = perform_state_transition(my_state);
		}
		else if (is_result_significant.indexOf('possibly_') != -1) {
		    if (my_state == "st_GUB_cookiesets_block_DISABLED" &&
			is_result_significant == "possibly_yes") {
			my_state = "st_GUB_cookiesets_block_DISABLED_and_NONDURING";
		    }
		    else if (my_state == "st_LLB_cookiesets_block_DISABLED_and_NONDURING" &&
			is_result_significant == "possibly_yes") {
			my_state = "st_LLB_cookiesets_block_DISABLED";
		    }
		    else {
			pending_result_significance = is_result_significant;
			my_state = "st_verification_epoch";
		    }
		}
		else if (is_result_significant == "expand") {
		    last_non_expand_state = my_state;
		    tot_expand_state_entered += 1;
		    my_state = perform_state_transition("st_expand_GUB_suspected_account_cookies");
		    // my_state = perform_state_transition("st_expand_LLB_suspected_account_cookies");
		}
		else if (is_result_significant == 'yes' ||
			 is_result_significant == 'no') {
		    is_result_significant = (is_result_significant == 'yes') ? true : false;
		    var rc = commit_result(my_state, is_result_significant);
		    if (!rc) {
			my_state = perform_state_transition(my_state);
		    }
		    else {
			temp_state = "st_verification_epoch";
		    }
		}
		else {
		    console.log("APPU Error: Unknown result significance: " + is_result_significance);
		    report_fatal_error('unknown-rs-' + result_significance +
				       '-my-state-' + my_state);
		    my_state = "st_terminate";
		}
	    }
	}
	else {
	    console.log("APPU Error: Unexpected result, terminating");
	    report_fatal_error('last-result-unexpected-my-state-' + my_state);
	    my_state = "st_terminate";
	}

	if (temp_state != "st_verification_epoch") {
	    last_non_verification_state = temp_state;
	}

	if (my_state == "st_verification_epoch") {
	    verification_are_usernames_present = undefined;
	    verification_bool_pwd_box_present = undefined;
	}

	if (my_state == "st_verification_epoch" ||
	    my_state == "st_LLB_cookiesets_block_DISABLED" ||
	    my_state == "st_GUB_cookiesets_block_DISABLED_and_NONDURING") {
	    console.log("-----------------");
	}
	else {
	    console.log("*****************************************");
	}

	console.log("APPU DEBUG: Next state: " + my_state);	
	if (my_state == "st_LLB_cookiesets_block_DISABLED_and_NONDURING" ||
	    my_state == "st_LLB_cookiesets_block_DISABLED") {
	    console.log("APPU DEBUG: Number of cookies to DROP in this state: " + num_cookies_drop_for_round);	
	}
	else if (my_state == "st_GUB_cookiesets_block_DISABLED_and_NONDURING" ||
		 my_state == "st_GUB_cookiesets_block_DISABLED") {
	    console.log("APPU DEBUG: Number of cookies to PASS in this state: " + num_cookies_pass_for_round);	
	}
	else if (my_state == "st_expand_LLB_suspected_account_cookies") {
	    console.log("APPU DEBUG: (EXPAND-STATE) Number of cookies to DROP in this state: " + 
			expand_state_num_cookies_drop_for_round);	
	}
	else if (my_state == "st_expand_GUB_suspected_account_cookies") {
	    console.log("APPU DEBUG: (EXPAND-STATE) Number of cookies to PASS in this state: " + 
			expand_state_num_cookies_pass_for_round);	
	}

	console.log("APPU DEBUG: Total cookiesets tested in this round: " + tot_cookiesets_tested_this_round);	
	console.log("APPU DEBUG: Total cookiesets tested this attempt: " + tot_cookiesets_tested);		

	console.log("APPU DEBUG: Total number of actual page reloads this attempt: " + tot_page_reloads);
	console.log("APPU DEBUG: Total number of actual page reloads overall: " + tot_page_reloads_overall);

	var ci_end_time = new Date();
	var time_taken_this_attempt = (ci_end_time.getTime() - ci_start_time.getTime())/1000;
	console.log("APPU DEBUG: Time taken for investigation in this attempt: " + 
		    Math.floor((time_taken_this_attempt/60)) + "m " +
		    Math.floor((time_taken_this_attempt % 60)) + "s");

	var time_taken_overall = tot_time_taken + (ci_end_time.getTime() - ci_start_time.getTime())/1000;
	console.log("APPU DEBUG: Time taken for investigation overall: " + 
		    Math.floor((time_taken_overall/60)) + "m " +
		    Math.floor((time_taken_overall % 60)) + "s");


	if (my_state == "st_terminate" && !has_error_occurred) {
	    final_result();
	}
	
	return my_state;
    }
    

    function is_cookie_testing_done() {
	if (my_state == "st_terminate") {
	    return true;
	}

	if (has_error_occurred) {
	    console.log("APPU DEBUG: Error occurred. is_cookie_testing_done() returning TRUE");
	    return true;
	}

	if ((num_cookies_drop_for_round + (num_cookies_pass_for_round - 1)) > tot_cookies) {
	    // Minus one because current GUB cookies_pass round is not always totally finished.
	    console.log("APPU DEBUG: num_cookies_drop_for_round(" + num_cookies_drop_for_round + 
			") PLUS num_cookies_pass_for_round(" + num_cookies_pass_for_round + ") MINUS one," +
			" exceeds suspected_account_cookies_array length(" + 
			tot_cookies + "). " + 
			"is_cookie_testing_done() returning TRUE");
	    return true;
	}

	if (config_cookiesets == 'none' && num_cookies_drop_for_round > 1) {
	    console.log("APPU DEBUG: All single-cookies have been tested AND no cookie-sets " +
			"testing required. COOKIE-INVESTIGATION: DONE");
	    return true;
	}

	// 	if (config_cookiesets == 'random' &&
	// 	    current_cookiesets_test_attempts >= MAX_RANDOM_COOKIESETS_TEST_ATTEMPTS) {
	// 	    console.log("APPU DEBUG: All single-cookies have been tested AND maximum random cookiesets(" + 
	// 			MAX_RANDOM_COOKIESETS_TEST_ATTEMPTS + ") " +
	// 			"are tested. COOKIE-INVESTIGATION: DONE");
	// 	    return true;
	// 	}

	return false;
    }
    

    function final_result() {
	if (config_do_not_use_shadow_cookie_store) {
	    console.log("APPU DEBUG: Restoring browser cookie store to its original state");
	    dump_to_browser_cookie_store(orig_browser_cookie_store);
	    cookie_store_remove(my_domain);
	}

	if (last_non_verification_state == "st_testing") {
	    console.log("APPU DEBUG: Ending cookie investigation for(" + my_domain + "): " + ci_end_time);
	    remove_cookie_investigation_state(my_url);
	    terminate_cookie_investigating_tab(my_tab_id);
	    window.clearTimeout(shut_tab_forcefully);
	    return;
	}

	bool_is_cookie_testing_done = true;
	store_intermediate_state();

	console.log("------ FINAL RESULT ------");
	console.log("APPU DEBUG: Cookies investigated for Web-Application: " + my_url);
	// Testing with blocking and verification.
		
	console.log("");

	console.log("APPU DEBUG: LLB & GUB OPTIMIZATION INFORMATION");
	console.log("APPU DEBUG: Number of discovered LLBs: " + s_a_LLB_cookiesets_array.length);
	console.log("APPU DEBUG: Number of discovered GUBs: " + s_na_GUB_cookiesets_array.length);
	console.log("");

	console.log("APPU DEBUG: Skipped cookiesets going UP in POSET (subset in account-cookiesets): " + 
		    cookiesets_optimization_stats.num_llb_subset_in_account_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets going UP in POSET (superset in non-account-cookiesets): " + 
		    cookiesets_optimization_stats.num_llb_superset_in_non_account_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets going UP in POSET (superset in non-account-super-cookiesets): " + 
		    cookiesets_optimization_stats.num_llb_superset_in_non_account_super_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets going UP in POSET (subset in account-super-cookiesets): " + 
		    cookiesets_optimization_stats.num_llb_subset_in_account_super_cookiesets);

	console.log("");
	
	console.log("APPU DEBUG: Skipped cookiesets coming DOWN in POSET (subset in account-cookiesets): " + 
		    cookiesets_optimization_stats.num_gub_subset_in_account_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets coming DOWN in POSET (superset in non-account-cookiesets): " + 
		    cookiesets_optimization_stats.num_gub_superset_in_non_account_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets coming DOWN in POSET (subset in account-super-cookiesets): " + 
		    cookiesets_optimization_stats.num_gub_subset_in_account_super_cookiesets);
	console.log("APPU DEBUG: Skipped cookiesets coming DOWN in POSET (superset in non-account-super-cookiesets): " + 
		    cookiesets_optimization_stats.num_gub_superset_in_non_account_super_cookiesets);

	console.log("");

	console.log("APPU DEBUG: Total skipped cookiesets (Subset in account-cookiesets): " + 
		    (cookiesets_optimization_stats.num_llb_subset_in_account_cookiesets +
		     cookiesets_optimization_stats.num_gub_subset_in_account_cookiesets + 
		     cookiesets_optimization_stats.num_llb_subset_in_account_super_cookiesets + 
		     cookiesets_optimization_stats.num_gub_subset_in_account_super_cookiesets));

	console.log("APPU DEBUG: Total skipped cookiesets (Superset in non-account-cookiesets): " + 
		    (cookiesets_optimization_stats.num_llb_superset_in_non_account_super_cookiesets +
		     cookiesets_optimization_stats.num_gub_superset_in_non_account_cookiesets +
		     cookiesets_optimization_stats.num_llb_superset_in_non_account_cookiesets + 
		     cookiesets_optimization_stats.num_gub_superset_in_non_account_super_cookiesets))
	
	var total_skipped_cookiesets = cookiesets_optimization_stats.num_llb_subset_in_account_cookiesets +
	    cookiesets_optimization_stats.num_llb_superset_in_non_account_cookiesets +
	    cookiesets_optimization_stats.num_llb_superset_in_non_account_super_cookiesets +
	    cookiesets_optimization_stats.num_llb_subset_in_account_super_cookiesets +
	    cookiesets_optimization_stats.num_gub_subset_in_account_cookiesets +
	    cookiesets_optimization_stats.num_gub_superset_in_non_account_cookiesets +
	    cookiesets_optimization_stats.num_gub_subset_in_account_super_cookiesets +
	    cookiesets_optimization_stats.num_gub_superset_in_non_account_super_cookiesets;
	console.log("APPU DEBUG: Total skipped cookiesets: " + 
		    total_skipped_cookiesets);

	console.log("");
	console.log("APPU DEBUG: Total cookiesets for naive method: " + 
		    Math.pow(2, tot_cookies));
	console.log("APPU DEBUG: Total cookiesets tested this attempt: " + tot_cookiesets_tested);	
	
	console.log("");
	console.log("APPU DEBUG: PAGE RELOAD INFORMATION");
	console.log("APPU DEBUG: Total number of page reloads with naive method: " + 
		    cookiesets_optimization_stats.tot_page_reloads_naive);
	console.log("APPU DEBUG: Total number of page reloads this attempt: " + tot_page_reloads);
	console.log("APPU DEBUG: Total number of page reloads overall: " + tot_page_reloads_overall);
	console.log("APPU DEBUG: Total number of page reloads since last change in logout-equation: " + 
		    tot_page_reloads_since_last_lo_change);

	console.log("");
	console.log("APPU DEBUG: BANDWIDTH INFORMATION");
	var tbs = tot_bytes_sent + bytes_sent_this_attempt;
	var tbr = tot_bytes_recvd + bytes_recvd_this_attempt;
	console.log("APPU DEBUG: Total bytes sent during investigation: " + get_human_readable_size(tbs)); 
	console.log("APPU DEBUG: Total bytes received during investigation: " + get_human_readable_size(tbr)); 

	console.log("");
	console.log("APPU DEBUG: TIME INFORMATION");

	var ci_end_time = new Date();

	if (last_cookieset_test_time == undefined) {
	    last_cookieset_test_time = ci_end_time;
	}

	var cg_time_taken = tot_time_since_last_lo_change + (ci_end_time.getTime() - 
					    last_cookieset_test_time.getTime())/1000;
	console.log("APPU DEBUG: Total time in generating cookiesets since last change to equation: " + 
		    Math.floor((cg_time_taken/60)) + "m " +
		    Math.floor((cg_time_taken % 60)) + "s");

	var ci_time_taken = tot_time_taken + (ci_end_time.getTime() - ci_start_time.getTime())/1000;
	console.log("APPU DEBUG: Total time taken for investigation: " + Math.floor((ci_time_taken/60)) + "m " +
		    Math.floor((ci_time_taken % 60)) + "s");
	console.log("APPU DEBUG: Total attempts so far: " + tot_attempts);

	console.log("");
	console.log("APPU DEBUG: COOKIESETS INFORMATION");
	if (!has_error_occurred) {
	    // First find a set from s_a_GUB_decimal_cookiesets such that
	    // no element in that set is a subset of any other element.
	    // In short, get LB_s_a_GUB_decimal_cookiesets from s_a_GUB_decimal_cookiesets
	    // where LB: Lower Bounds in s_a_GUB_decimal_cookiesets
	    var LB_s_a_GUB_decimal_cookiesets = [];
	    var LB_s_a_GUB_cookiesets_array = [];
	    for (var k = 0; k < s_a_GUB_decimal_cookiesets.length; k++) {
		add_to_set_if_no_subset_member(s_a_GUB_cookiesets_array[k], 
					       LB_s_a_GUB_cookiesets_array, 
					       LB_s_a_GUB_decimal_cookiesets, 
					       suspected_account_cookies_array,
					       s_a_GUB_decimal_cookiesets[k]);
	    }

	    for (var k = 0; k < LB_s_a_GUB_decimal_cookiesets.length; k++) {
		var rc = is_a_setmember_subset(LB_s_a_GUB_decimal_cookiesets[k], 
					       s_a_LLB_decimal_cookiesets);
		if (!rc) {
		    // This means that I need to transfer this element from s_a_GUB_decimal_cookiesets
		    // to s_a_LLB_decimal_cookiesets
		    
		    console.log("APPU DEBUG: Transferring cookieset from s_a_GUB to s_a_LLB: " + 
				JSON.stringify(LB_s_a_GUB_cookiesets_array[k]));

		    var delete_index = s_a_GUB_decimal_cookiesets.indexOf(LB_s_a_GUB_decimal_cookiesets[k]);
		    s_a_GUB_decimal_cookiesets.splice(delete_index, 1);
		    s_a_GUB_cookiesets_array.splice(delete_index, 1);
		    
		    s_a_LLB_decimal_cookiesets.push(LB_s_a_GUB_decimal_cookiesets[k]);
		    s_a_LLB_cookiesets_array.push(LB_s_a_GUB_cookiesets_array[k].slice(0));
		}
	    }
	}

	num_all_cookies = Object.keys(get_domain_cookies(my_url)).length;
	console.log("APPU DEBUG: Total cookies: " + num_all_cookies);
	console.log("APPU DEBUG: Total suspected cookies: " + tot_cookies);
	console.log("APPU DEBUG: Total times expand-state entered: " + tot_expand_state_entered);	
	console.log("APPU DEBUG: Total expand cookiesets tested overall: " + tot_expand_state_cookiesets_tested_overall);	
	console.log("APPU DEBUG: Total GUB cookiesets tested overall: " + tot_gub_cookiesets_tested_overall);	
	console.log("APPU DEBUG: Total cookiesets tested overall: " + tot_cookiesets_tested_overall);	
	console.log("APPU DEBUG: Total inconclusive cookiesets overall(page load failure and no usernames): " + 
		    tot_inconclusive_cookiesets_overall);	
	
	console.log("APPU DEBUG: Number of restrictive account-cookiesets: " + 
		    verified_restricted_cookiesets_array.length);
	for (var j = 0; j < verified_restricted_cookiesets_array.length; j++) {
	    var cs_names = verified_restricted_cookiesets_array[j];
	    console.log(j + ". Number of cookies: " + cs_names.length +
			", CookieSet: " +
			    JSON.stringify(cs_names));
	}

	var cookie_aliases = {};
	var used_aliases = [];
	var logout_equation = "";
	var login_equation = "BooleanMinimize[!(";
	
	console.log("APPU DEBUG: Number of account-cookiesets: " + 
		    s_a_LLB_cookiesets_array.length);
	if (s_a_LLB_cookiesets_array.length > 0) {
	    var first_time = true;
	    for (var j = 0; j < s_a_LLB_cookiesets_array.length; j++) {
		var cs_names = s_a_LLB_cookiesets_array[j];
		console.log(j + ". Number of cookies: " + cs_names.length +
			    ", CookieSet: " +
			    JSON.stringify(cs_names));
		if (!first_time) {
		    logout_equation += " || ";
		    login_equation += " || ";
		}
		else {
		    first_time = false;
		}

		logout_equation += "(";
		login_equation += "(";
		for (var u = 0; u < cs_names.length; u++) {
		    var fields = cs_names[u].split(":");
		    var cookie_alias = fields[fields.length - 1];
		    if (used_aliases.indexOf(cookie_alias) == -1) {
			cookie_aliases[cs_names[u]] = cookie_alias;
		    }
		    else {
			for (var i = 0; i < 1000; i++) {
			    var ck_as = cookie_alias + i;
			    if (used_aliases.indexOf(ck_as) == -1) {
				cookie_alias = ck_as;
				cookie_aliases[cs_names[u]] = cookie_alias;
				break;
			    }
			}
		    }

		    if (u != 0) {
			logout_equation += " && ";
			login_equation += " && ";
		    }
		    logout_equation += "~" + cookie_alias;
		    login_equation += "!" + cookie_alias;
		}
		logout_equation += ")";
		login_equation += ")";
	    }
	}
	else {
	    logout_equation = "Not detected yet";
	}
	
	login_equation += ")]";

	var cs = pii_vault.aggregate_data.session_cookie_store[my_domain];
	cs.logout_equation = logout_equation;
	cs.cookie_aliases = cookie_aliases;
	flush_session_cookie_store();
	
	console.log("");
	console.log("APPU DEBUG: LOGOUT-EQUATION INFORMATION");
	console.log("APPU DEBUG: Cookie-aliases: ");	    
	for (var ca in cookie_aliases) {
	    console.log("APPU DEBUG: " + cookie_aliases[ca] + ": " + ca);
	}

	var acl = "";
	var auth_cookies_all = {};
	console.log("");
	console.log("APPU DEBUG: COOKIE ATTRIBUTES: HTTPONLY, SECURE ");	    
	for (var ca in cookie_aliases) {
	    if (cs.cookies[ca] != undefined) {
		auth_cookies_all[ca] = cs.cookies[ca].value;
		var is_secure = undefined; 
		try {
		    is_secure = cs.cookies[ca].secure;
		}
		catch (e) {
		    console.log("Here here: exception: " + JSON.stringify(e));
		}
		
		if (is_secure != undefined) {
		    is_secure = (is_secure == true) ? "T" : "F";
		}
		var is_httponly = cs.cookies[ca].httpOnly;
		if (is_httponly != undefined) {
		    is_httponly = (is_httponly == true) ? "T" : "F";
		}
		console.log("APPU DEBUG: " + cookie_aliases[ca] + " (H: " 
			    + is_httponly +", S: " + is_secure + ")");
		acl += (cookie_aliases[ca] + " (H: " + is_httponly +", S: " + is_secure + "), ");
	    }
	    else {
		console.log("APPU DEBUG: " + cookie_aliases[ca] + " (Cookie seems to be deleted)");
	    }
	}


	var auth_cookies_data = {};
	auth_cookies_data["Auth-Cookie-Equation:" + my_domain] = auth_cookies_all;
	write_to_local_storage(auth_cookies_data);


	console.log("APPU DEBUG: " + acl);	    

	console.log("");
	if (!has_error_occurred) {
	    console.log("APPU DEBUG: Complete logout-equation: " + logout_equation);
	    console.log("APPU DEBUG: Complete login-equation: " + login_equation);
	}
	else {
	    console.log("APPU DEBUG: Partial logout-equation: " + logout_equation);
	}

	if (!has_error_occurred) {
	    console.log("APPU DEBUG: Testing done?: YES");
	    remove_cookie_investigation_state(my_url);
	}
	else {
	    console.log("APPU DEBUG: Testing done?: NO");
	}

	terminate_cookie_investigating_tab(my_tab_id);
	window.clearTimeout(shut_tab_forcefully);
    }
    
    
    function report_fatal_error(reason) {
	// This function will take care of all the major errors that would hamper 
	// cookie testing. 
	// Error conditions to be taken care of:
	// 1. No usernames to check for (i.e. FPI store is not populated)
	// 2. User logs out of the website in the middle of the session.
	// 3. Verification epoch says that user is no longer logged-in.
	// 4. Hard timeout occurs for cookie investigation.
	// 5. User closes the tab.
	// 6. Max webpage reload attempts has reached (site or net is slow).

	store_intermediate_state();
	var cit = cookie_investigating_tabs[my_tab_id];
	if (cit.pageload_timeout != undefined) {
	    console.log("APPU DEBUG: Clearing reload-interval for: " + my_tab_id
			+ ", Interval-ID: " + cit.pageload_timeout);
	    window.clearInterval(cit.pageload_timeout);
	    cit.pageload_timeout = undefined;
	}

	var err_str = "APPU Error: ERROR during cookie investigation, reason: " + reason +
	    ", for URL: " + my_url;

	console.log(err_str);
	print_appu_error(err_str);

	has_error_occurred = true;
	final_result();
    }


    function detect_login_status(present_usernames) {
	var bool_at_least_one_username_present = false;

	var tn = [];
	for (var i = 0; i < top_three_elements_with_usernames.length; i++) {
	    var t = top_three_elements_with_usernames[i];
	    tn.push($.extend(true, {}, t));
	}
	
	for (var i = 0; i < tn.length; i++) {
	    var cn = present_usernames.elem_list;
	    for (var j = 0; j < cn.length; j++) {
// 		// Checking for 'X' co-ordinate match OR 'Y' co-ordinate match because
// 		// sometimes some element load takes time.
// 		if ((cn[j].top == tn[i].top ||
// 		     cn[j].left == tn[i].left) &&
// 		    cn[j].username == tn[i].username) {
// 		    bool_at_least_one_username_present = true;
// 		    break;
// 		}

		if (cn[j].username == tn[i].username) {
		    bool_at_least_one_username_present = true;
		    break;
		}
	    }
	}
	
	if (bool_at_least_one_username_present) {
	    return true;
	}
	else {
	    return false;
	}

	return false;
    }

    // I need this function because each web page fetch consists of multiple
    // HTTP GET requests for various resources on the web page.
    // For all those GET requests, same cookie must be blocked.
    // Thus, someone else from outside will have to know that the webpage fetch
    // is complete and we should move to suppress next cookie.
    function web_request_fully_fetched(present_usernames, num_pwd_boxes) {
	var are_usernames_present = undefined;
	var was_result_expected = false;

	if (my_state == "st_LLB_cookiesets_block_DISABLED_and_NONDURING"  ||
	    my_state == "st_GUB_cookiesets_block_DISABLED"                ||
	    my_state == "st_expand_LLB_suspected_account_cookies"         ||
	    my_state == "st_expand_GUB_suspected_account_cookies") {
	    tot_cookiesets_tested_overall += 1;
	    tot_cookiesets_tested += 1;
	    tot_cookiesets_tested_this_round += 1;
	    if (my_state == "st_GUB_cookiesets_block_DISABLED" ||
		my_state == "st_expand_GUB_suspected_account_cookies") {
		tot_gub_cookiesets_tested_overall += 1;
	    }
	}

	var bool_top_three_elems_present = true;
	if (top_three_elements_with_usernames != undefined) {
	    are_usernames_present = detect_login_status(present_usernames);
	}

	num_pwd_boxes = (num_pwd_boxes == undefined) ? 0 : num_pwd_boxes;

	// Code to for setting initial values for next epoch.

	if (my_state == 'st_cookie_test_start') {
	    console.log("APPU DEBUG: Cookie testing state: " + my_state);
	    console.log("APPU DEBUG: are_usernames_present: " + are_usernames_present + ", " + 
			"page_load_success: " + page_load_success + ", " +
			"num_pwd_boxes: " + num_pwd_boxes);
	    
	    if (page_load_success) {
		was_result_expected = true;
	    }
	    
	    if (config_skip_initial_states) {
		// Since we are skipping tests, just assign the expected values for
		// following variables:
		
		for (var j = 0; j < suspected_account_cookies_array.length; j++) {
		    disabled_cookies.push(suspected_account_cookies_array[j]);
		}
		
		s_a_GUB_cookiesets_array.push(disabled_cookies.slice(0));
		rc = add_to_set(disabled_cookies, undefined, s_a_GUB_decimal_cookiesets, 
				suspected_account_cookies_array,
				undefined);
		
		if (bool_switch_to_testing) {
		    last_non_verification_state = "st_testing";
		}
		else {
		    last_non_verification_state = "st_suspected_cookies_block_test";
		}
	    }
	}
	else if (my_state == 'st_verification_epoch') {
	    if (top_three_elements_with_usernames == undefined) {
		if (Object.keys(present_usernames.frequency).length > 0) {
		    are_usernames_present = true;
		    
		    top_three_elements_with_usernames = [];
		    var tot_uname_elems = 3;
		    
		    if (present_usernames.elem_list.length < 3) {
			tot_uname_elems = present_usernames.elem_list.length;
		    }
		    
		    for (var i = 0; i < tot_uname_elems; i++) {
			top_three_elements_with_usernames.push(present_usernames.elem_list[i]);
		    }
		    console.log("APPU DEBUG: Ideally '" + tot_uname_elems + "' number of usernames should " +
				"be present when user is logged-in");
		    console.log("APPU DEBUG: Total number of password-boxes present: " + num_pwd_boxes);
		    pending_bool_pwd_box_present_first_verification = (num_pwd_boxes > 0);
		}
		else {
		    are_usernames_present = false;
		}
	    }

	    if (are_usernames_present != undefined) {
		num_verification_page_load_attempts += 1;
		if (page_load_success || are_usernames_present) {
		    num_verification_page_load_success += 1;
		}

		if (are_usernames_present) {
		    if (num_pwd_boxes == 0) {
			// EXPECTED branch
			// Either page loaded successfully and usernames found OR
			// page not loaded successfully (but content script ran) and usernames are found
			console.log("APPU DEBUG: WORKS-AS-EXPECTED: User is logged-in for test 'st_verification_epoch'");
			verification_epoch_results(are_usernames_present, (num_pwd_boxes > 0));
			was_result_expected = true;
		    }
		    else {
			// LESS SERIOUS error branch, why are there password boxes?
			console.log("APPU Error: NOT EXPECTED: User is logged-in, page_load_success(" + page_load_success
				    + "), BUT number of password boxes present: " + num_pwd_boxes +
				    " for test 'st_verification_epoch'");
			report_fatal_error("Verification-epoch-pwd-boxes-present");
			was_result_expected = false;
		    }
		}
		else {
		    if (page_load_success) {
			// SERIOUS error branch (User probably initiated log out or our testing messed up user-session)
			console.log("APPU Error: NOT EXPECTED: User is NOT logged-in, num-pwd-boxes("+ num_pwd_boxes 
				    +"), for test 'st_verification_epoch'");
			report_fatal_error("Verification-epoch-page-load-no-usernames");
			//console.log("Here here: SHADOW_COOKIE_STORE: " + JSON.stringify(shadow_cookie_store));
			was_result_expected = false;
		    }
		    else {
			// LESS SERIOUS error branch (Network lag?)
			// page not loaded properly.
			console.log("APPU Error: NOT EXPECTED: User is NOT logged-in, num-pwd-boxes(" + num_pwd_boxes
				    + "), page not loaded for test 'st_verification_epoch'");
			report_fatal_error("Verification-epoch-no-page-load-no-usernames");
			was_result_expected = false;
		    }
		}
	    }
	    else {
		// SERIOUS error branch (User name detection test never carried out)
		console.log("APPU Error: NOT EXPECTED: Username detection test never " + 
			    "carried out for 'st_verification_epoch'");
		report_fatal_error("Verification-epoch-no-username-detection-test: Page load: " + page_load_success);
		was_result_expected = false;
	    }
	}
	else if (my_state == 'st_start_with_no_cookies') {
	    if (are_usernames_present != undefined) {
		if (are_usernames_present) {
		    // SERIOUS error branch: When starting with no cookies, user should not be logged-in
		    //                       Critical error in Appu code.
		    console.log("APPU Error: NOT EXPECTED: Usernames detected for 'st_start_with_no_cookies', " +
				"num-pwd-boxes: " + num_pwd_boxes);
		    report_fatal_error("Start-with-no-cookies-usernames-found");
		    was_result_expected = false;
		}
		else {
		    if (page_load_success) {
			// EXPECTED branch: User should not be logged-in after page is loaded
			console.log("APPU DEBUG: WORKS-AS-EXPECTED: Usernames NOT detected for " + 
				    "'st_start_with_no_cookies', num-pwd-boxes: " + num_pwd_boxes);
			update_cookie_status(are_usernames_present, (num_pwd_boxes > 0));
			was_result_expected = true;
		    }
		    else {
			// LESS SERIOUS error branch: No point in proceeding if page does 
			// not get loaded while starting with empty shadow_cookie_store
			console.log("APPU Error: NOT EXPECTED: Page is not loaded properly. No point in proceeding. " +
				    "num-pwd-boxes: " + num_pwd_boxes +
				    ", for 'st_start_with_no_cookies'");
			report_fatal_error("Start-with-no-cookies-no-usernames-no-page-load");
			was_result_expected = false;
		    }
		}
	    }
	    else {
		// SERIOUS error branch (User name detection test never carried out)
		console.log("APPU Error: NOT EXPECTED: Username detection test never " + 
			    "carried out for 'st_start_with_no_cookies'");
		report_fatal_error("Start-with-no-cookies-no-username-detection-test: Page load: " + page_load_success);
		was_result_expected = false;
	    }
	}
	else if (my_state == 'st_suspected_cookies_pass_test') {
	    if (are_usernames_present != undefined) {
		if (are_usernames_present) {
		    if (num_pwd_boxes == 0) {
			// EXPECTED branch
			console.log("APPU DEBUG: WORKS-AS-EXPECTED: Usernames detected for 'st_suspected_cookies_pass_test'");
			update_cookie_status(are_usernames_present, (num_pwd_boxes > 0));
			was_result_expected = true;
		    }
		    else {
			// LESS SERIOUS error branch, why are there password boxes?
			console.log("APPU Error: NOT EXPECTED: User is logged-in, page_load_success(" + page_load_success
				    + "), BUT number of password boxes present: " + num_pwd_boxes +
				    " for test 'st_suspected_cookies_pass_test'");
			report_fatal_error("During-cookies-pass-epoch-pwd-boxes-present");
			was_result_expected = false;
		    }
		}
		else {
		    if (page_load_success) {
			// (Usernames not detected even if page loaded, we could
			// be detecting 'DURING' cookies incorrectly)
			// Need to switch to expand state and find those cookies.
			console.log("APPU DEBUG: WORKS-AS-EXPECTED: Usernames NOT detected, " + 
				    "num-pwd-boxes: " + num_pwd_boxes +
				    ", for 'st_suspected_cookies_pass_test'");
			console.log("APPU DEBUG: Seems like account-cookies in non-DURING set");
			update_cookie_status(are_usernames_present, (num_pwd_boxes > 0));
			was_result_expected = true;
		    }
		    else {
			// SERIOUS error branch (Usernames not detected, page NOT loaded, test
			// unconclusive. Could be a network issue)
			console.log("APPU Error: NOT EXPECTED: Usernames NOT detected, page NOT loaded, " + 
				    "num-pwd-boxes: " + num_pwd_boxes + 
				    ", for 'st_suspected_cookies_pass_test'");
			report_fatal_error("During-cookies-pass-no-usernames-no-page-load");
			was_result_expected = false;
		    }
		}
	    }
	    else {
		// SERIOUS error branch (user name detection test never carried out)
		console.log("APPU Error: NOT EXPECTED: Username detection test never " + 
			    "carried out for 'st_suspected_cookies_pass_test'");
		report_fatal_error("During-cookies-pass-no-username-detection-test: Page load: " + page_load_success);
		was_result_expected = false;
	    }
	}
	else if (my_state == 'st_suspected_cookies_block_test') {
	    if (are_usernames_present != undefined) {
		if (are_usernames_present) {
		    // (Usernames found even when all 'DURING' cookies blocked.
		    // This means we are not detecting them correctly)
		    // Need to switch to expand cookie state.
		    console.log("APPU DEBUG: WORKS-AS-EXPECTED: Usernames found, " + 
				"num-pwd-boxes: " + num_pwd_boxes +
				", for 'st_suspected_cookies_block_test'");
		    console.log("APPU DEBUG: Seems like account-cookies in non-DURING set");
		    update_cookie_status(are_usernames_present, (num_pwd_boxes > 0));
		    was_result_expected = true;

// 		    console.log("APPU Error: NOT EXPECTED: Usernames found " + 
// 				"for 'st_suspected_cookies_block_test', Page load: " + page_load_success +
// 				", num-pwd-boxes: " + num_pwd_boxes);
// 		    report_fatal_error("During-cookies-block-usernames-found: Page load: " + page_load_success);
// 		    was_result_expected = false;
		}
		else {
		    if (page_load_success) {
			// EXPECTED branch
			console.log("APPU DEBUG: WORKS-AS-EXPECTED: Usernames NOT detected for " + 
				    "'st_suspected_cookies_block_test', num-pwd-boxes: " + num_pwd_boxes);
			update_cookie_status(are_usernames_present, (num_pwd_boxes > 0));
			was_result_expected = true;
		    }
		    else {
			// LESS SERIOUS error branch (Usernames NOT found when all 'DURING' cookies blocked.
			// But page is not fully loaded (network lag?). Test is inconclusive and we better stop further
			// testing.)
			console.log("APPU Error: NOT EXPECTED: Usernames NOT detected, Page NOT loaded, " + 
				    "num-pwd-boxes: " + num_pwd_boxes +
				    ", for 'st_suspected_cookies_block_test'");
			report_fatal_error("During-cookies-block-no-usernames-no-page-load");
			was_result_expected = false;
		    }
		}
	    }
	    else {
		// SERIOUS error branch (user name detection test never carried out)
		console.log("APPU Error: NOT EXPECTED: Username detection test never " + 
			    "carried out for 'st_suspected_cookies_block_test'");
		report_fatal_error("During-cookies-block-no-username-detection-test: Page load: " + page_load_success);
		was_result_expected = false;
	    }
	}
	else if (my_state == "st_testing") {
	    console.log("APPU DEBUG: WORKS-AS-EXPECTED: Usernames detection test " + 
			"done, page loaded, num-pwd-boxes: " + num_pwd_boxes + 
			", for 'st_testing'");
	    are_disabled_cookies_regenerated();
	    update_cookie_status(are_usernames_present, (num_pwd_boxes > 0));
	    was_result_expected = true;

	}
	else if (my_state == "st_LLB_cookiesets_block_DISABLED_and_NONDURING" ||
		 my_state == "st_LLB_cookiesets_block_DISABLED" ||
		 my_state == "st_expand_LLB_suspected_account_cookies") {
	    if (are_usernames_present != undefined) {
		if (page_load_success) {
		    // EXPECTED branch
		    console.log("APPU DEBUG: WORKS-AS-EXPECTED: Usernames detection test " + 
				"done, page loaded, num-pwd-boxes: " + num_pwd_boxes + 
				", for '"+ my_state +"'");
		    are_disabled_cookies_regenerated();
		    update_cookie_status(are_usernames_present, (num_pwd_boxes > 0));
		    was_result_expected = true;
		}
		else {
		    if (are_usernames_present) {
			// EXPECTED branch
			console.log("APPU DEBUG: WORKS-AS-EXPECTED: Usernames are detected, page is not loaded, " + 
				    "num-pwd-boxes: " + num_pwd_boxes + 
				    ", for '" + my_state + "'");
			are_disabled_cookies_regenerated();
			update_cookie_status(are_usernames_present, (num_pwd_boxes > 0));
			was_result_expected = true;
		    }
		    else {
			if (num_pwd_boxes > 0) {
			    if (bool_pwd_box_should_be_present) {
				// Even if page was not loaded and even if usernames were not found,
				// password box is present and from previous testing, it is present
				// when user is not logged in.
				console.log("APPU DEBUG: EXPECTED: Usernames are NOT detected, page is not loaded, " +
					    "BUT password box is present, " + 
					    "num-pwd-boxes: " + num_pwd_boxes + 
					    ", for '" + my_state + "'");
				are_disabled_cookies_regenerated();
				update_cookie_status(false, (num_pwd_boxes > 0));
				was_result_expected = true;
			    }
			    else {
				// No page loaded, no usernames found, password box is not necessarily present
				console.log("APPU DEBUG: NOT EXPECTED: Usernames are NOT detected, page is not loaded, " +
					    "num-pwd-boxes: " + num_pwd_boxes + 
					    ", for '" + my_state + "'");
				tot_inconclusive_cookiesets_overall += 1;
				was_result_expected = true;
			    }
			}
			else {
			    // INCONCLUSIVE branch BUT nothing serious. Don't call update_cookie_status()
			    console.log("APPU DEBUG: NOT EXPECTED: Usernames NOT detected BUT page is not loaded" + 
					", num-pwd-boxes: " + num_pwd_boxes + 
					", for '" + my_state + "'");
			    tot_inconclusive_cookiesets_overall += 1;
			    was_result_expected = true;
			}
		    }
		}
	    }
	    else {
		// NON-SERIOUS error branch (user name detection test never carried out)
		// But no need to stop testing 
		console.log("APPU DEBUG: NON-SERIOUS: Username detection test never " + 
			    "carried out for '" + my_state + "', Page load: " + page_load_success);
		tot_inconclusive_cookiesets_overall += 1;
		was_result_expected = true;
	    }
	}
	else if (my_state == "st_GUB_cookiesets_block_DISABLED_and_NONDURING" ||
		 my_state == "st_GUB_cookiesets_block_DISABLED" ||
		 my_state == "st_expand_GUB_suspected_account_cookies") {
	    if (are_usernames_present != undefined) {
		if (page_load_success) {
		    // EXPECTED branch
		    console.log("APPU DEBUG: WORKS-AS-EXPECTED: Usernames detection test " + 
				"done, page loaded, num-pwd-boxes: " + num_pwd_boxes + 
				", for '" + my_state + "'");
		    are_disabled_cookies_regenerated();
		    update_cookie_status(are_usernames_present, (num_pwd_boxes > 0));
		    was_result_expected = true;
		}
		else {
		    if (are_usernames_present) {
			// EXPECTED branch
			console.log("APPU DEBUG: WORKS-AS-EXPECTED: Usernames are detected, page is not loaded, " + 
				    "num-pwd-boxes: " + num_pwd_boxes + 
				    ", for '" + my_state + "'");
			are_disabled_cookies_regenerated();
			update_cookie_status(are_usernames_present, (num_pwd_boxes > 0));
			was_result_expected = true;
		    }
		    else {
			if (num_pwd_boxes > 0) {
			    if (bool_pwd_box_should_be_present) {
				// Even if page was not loaded and even if usernames were not found,
				// password box is present and from previous testing, it is present
				// when user is not logged in.
				console.log("APPU DEBUG: EXPECTED: Usernames are NOT detected, page is not loaded, " + 
					    "BUT password box is present, " +
					    "num-pwd-boxes: " + num_pwd_boxes + 
					    ", for '" + my_state + "'");
				are_disabled_cookies_regenerated();
				update_cookie_status(false, (num_pwd_boxes > 0));
				was_result_expected = true;
			    }
			    else {
				// No page loaded, no usernames found, password box is not necessarily present
				console.log("APPU DEBUG: NOT EXPECTED: Usernames are NOT detected, page is not loaded, " +
					    "num-pwd-boxes: " + num_pwd_boxes + 
					    ", for '" + my_state + "'");
				tot_inconclusive_cookiesets_overall += 1;
				was_result_expected = true;
			    }
			}
			else {
			    // INCONCLUSIVE branch BUT nothing serious. Don't call update_cookie_status()
			    console.log("APPU DEBUG: NOT EXPECTED: Usernames NOT detected BUT page is not loaded" + 
					", num-pwd-boxes: " + num_pwd_boxes + 
					", for '" + my_state + "'");
			    tot_inconclusive_cookiesets_overall += 1;
			    was_result_expected = true;
			}
		    }
		}
	    }
	    else {
		// NON-SERIOUS error branch (user name detection test never carried out)
		// But no need to stop testing 
		console.log("APPU DEBUG: NON-SERIOUS: Username detection test never " + 
			    "carried out for '" + my_state + "', Page load: " + page_load_success);
		tot_inconclusive_cookiesets_overall += 1;
		was_result_expected = true;
	    }
	}

	// Goto next state, and return the next state.
	return goto_next_state(was_result_expected);
    }
    
    
    function handle_set_cookie_responses(details) {
	var final_rh = [];
	var rh = details.responseHeaders;

	if (bool_is_cookie_testing_done) {
	    return {responseHeaders: []};
	}

	if (req_epch_table[details.requestid] != epoch_id) {
	    return {responseHeaders: []};
	}

	for (var i = 0; i < rh.length; i++) {
	    if (rh[i].name.toLowerCase() == "content-length") {
		increment_recvd_bytes(parseInt(rh[i].value));
	    }

	    if (rh[i].name.toLowerCase() != "set-cookie") {
		final_rh.push(rh[i]);
	    }
	    else {
		var cookie_struct = {};
		var cookie_properties = rh[i].value.split(";");
		var cookie_name_value = cookie_properties.shift();
		
		var matched_entries = cookie_name_value.match(/(.*?)=(.*)/);

		try {
		    cookie_struct.name = matched_entries[1].trim();
		    cookie_struct.value = matched_entries[2].trim();
		}
		catch (e) {
		    console.log("Here here: " + JSON.stringify(e));
		}

		var my_url = details.url;
		
		// Default values for Domain and Path.
		// If set-cookie does not contain those values then
		// these default values will be used.
		cookie_struct.domain = my_url.split("/")[2];
		cookie_struct.path = "/" + my_url.split("/").slice(3).join("/");
		
		cookie_struct.expirationDate = undefined;
		cookie_struct.hostOnly = true;
		cookie_struct.httpOnly = false;
		cookie_struct.secure = false;
		var cookie_protocol = "http://";
		cookie_struct.session = false;
		
		for (var j = 0; j < cookie_properties.length; j++) {
		    var curr_property = cookie_properties[j].trim();
		    var curr_property_small = curr_property.toLowerCase();

		    if (curr_property_small.indexOf("path") != -1) {
			var matched_entries = curr_property.match(/(.+?)=(.*)/);
			cookie_struct.path = matched_entries[2].trim();
		    }
		    else if (curr_property_small.indexOf("expires") != -1) {
			var matched_entries = curr_property.match(/(.+?)=(.*)/);
			cookie_struct.expirationDate = (new Date(matched_entries[2].trim())).getTime()/1000;
		    }
		    else if (curr_property_small.indexOf("max-age") != -1) {
			var matched_entries = curr_property.match(/(.+?)=(.*)/);
			var max_age = matched_entries[2].trim();
			if (max_age[0] == '-') {
			    max_age = max_age.substr(1);
			}
			if (!(/^\d+$/.test(max_age))) {
			    continue;
			}
			cookie_struct.expirationDate = (new Date()).getTime()/1000 + parseInt(max_age, 10);
		    }
		    else if (curr_property_small.indexOf("domain") != -1) {
			var matched_entries = curr_property.match(/(.+?)=(.*)/);
			cookie_struct.domain = matched_entries[2].trim();
		    }
		    else if (curr_property_small.indexOf("secure") != -1) {
			cookie_struct.secure = true;
			cookie_protocol = "https://";
		    }
		    else if (curr_property_small.indexOf("httponly") != -1) {
			cookie_struct.httpOnly = true;
		    }
		    else if (curr_property_small.indexOf("priority") != -1) {
			// Do nothing
			continue;
		    }
		    else {
			if (curr_property_small.indexOf("version") == -1) {
			    console.log("APPU DEBUG: Unexpected cookie property(" + curr_property +
					") for cookie: " + cookie_struct.name);
			}
		    }
		}
		
		if (cookie_struct.domain[0] == '.') {
		    cookie_struct.hostOnly = false;
		}
		if (!cookie_struct.expirationDate) {
		    cookie_struct.session = true;
		}
		
		var cookie_key = (cookie_protocol + 
				  cookie_struct.domain + 
				  cookie_struct.path + 
				  ":" + 
				  cookie_struct.name); 


		if (req_epch_table[details.requestid] == epoch_id) {
		    // Write to shadow cookie table only IF this response corresponds
		    // on HTTP request issued in this test epoch.
// 		    console.log("APPU DEBUG: Here here: Shadow-cookie-store: key=" + 
// 				cookie_key + ", value=" + JSON.stringify(cookie_struct));
		    shadow_cookie_store[cookie_key] = cookie_struct;
		    // console.log("APPU DEBUG: In RESPONSE: SHADOW_COOKIE_STORE: " + JSON.stringify(shadow_cookie_store));
		}
	    }
	}
	return {responseHeaders: final_rh};
    }
    
    
    // This function is different from replace_with_cookies_from_shadow_cookie_store().
    // This only deletes SELECTIVE cookies from HTTP request whereas the other function completely
    // deletes cookies and creates new set from its own shadow_cookie_store.
    // Thus, whatever cookies are returned as a result of executing this function are from
    // the actual cookie_store and reflects all the changes that are happening because of
    // user browsing the site simultaneously.
    function delete_cookies_from_HTTP_requests(details) {
	var http_request_cookies = "";
	var final_cookies = {};
	var final_cookie_str = "";
	
	//console.log("Here here: (cookie_delete_function) RequestId: " + details.requestId);
	if (bool_is_cookie_testing_done) {
	    return;
	}
	
	for (var i = 0; i < details.requestHeaders.length; i++) {
	    if (details.requestHeaders[i].name == "Referer") {
		if (get_domain(details.requestHeaders[i].value.split("/")[2]) == 'live.com') {
		    details.requestHeaders.splice(i, 1);
		    break;
		}
	    }
	}
	
	if (my_state == 'st_cookie_test_start') {
	    return {requestHeaders: details.requestHeaders};
	}
	
	if (current_single_cookie_test_index) {
	    console.log("APPU DEBUG: All cookies for URL(" + url + ") have been tested. " + 
			"Terminating cookie_investigating_tab");
	    terminate_cookie_investigating_tab(my_tab_id);
	    final_result();
	    return;
	}
	
	if (my_state == "st_start_with_no_cookies") {
	    // This is to verify that cookies set during login were indeed account cookies.
	    return delete_all_cookies_from_HTTP_request(details);
	}
	
	// 	if (tot_execution > tot_cookies) {
	// 	    // Intentionally checking for '>' than '>=' because the first time this function is
	// 	    // called, we load 'live.com' and not the intended URL.
	// 	    console.log("APPU DEBUG: Maximum number of times  URL(" + url + ") have been tested. " + 
	// 			"However, not all cookies are examined. Current test index: " + 
	// 			current_single_cookie_test_index);
	// 	    terminate_cookie_investigating_tab(my_tab_id);
	// 	    return;
	// 	}
	
	for (var i = 0; i < details.requestHeaders.length; i++) {
	    if (details.requestHeaders[i].name == "Cookie") {
		http_request_cookies = details.requestHeaders.splice(i, 1);
		break;
	    }
	}
	
	if (http_request_cookies.length != 0) {
	    console.log("Here here: Going to suppress(if present): " +
			suspected_account_cookies_array[current_single_cookie_test_index]);
	    //console.log("Here here: Cookies found in HTTP request");
	    var cookie_name_value = http_request_cookies[0].value.split(";");
	    var delete_index = -1;
	    
	    //console.log("Here here: Current URL: " + details.url);
	    
	    for (var j = 0; j < cookie_name_value.length; j++) {
		// Lets do non-greedy matching here because cookie values
		// themselves can contain '='
		var matched_entries = cookie_name_value[j].match(/(.+?)=(.*)/);
		var c_name = matched_entries[1].trim();
		var hashed_c_value = sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(matched_entries[2].trim()));
		var curr_test_cookie_name = suspected_account_cookies_array[current_single_cookie_test_index];
		//console.log("Here here: Testing for cookie: "+ curr_test_cookie_name +", Current cookie: " + 
		//	    c_name);
		// To get only the cookie names. Ignore domain and path.
		// Using pop() because what if the domain is like www.google.com:8080
		if (c_name == curr_test_cookie_name.split(":").pop() &&
		    hashed_c_value == account_cookies[curr_test_cookie_name].hashed_value) {
		    // We found the cookie that we want to suppress this time.
		    delete_index = j;
		    break;
		}
	    }
	    
	    if (delete_index != -1) {
		var temp_array = cookie_name_value.splice(delete_index, 1);
		final_cookie_str = cookie_name_value.join("; "); 
		console.log("Here here: Match is found");
	    }
	    else {
		console.log("Here here: Match is *NOT* found");
		//console.log("APPU DEBUG: No cookie found to suppress in this request");
		final_cookie_str = cookie_name_value.join("; "); 
	    }
	    cookie_element = {
		name: "Cookie",
		value: final_cookie_str
	    };
	    details.requestHeaders.push(cookie_element);
	}
	
	
	console.log("Here here: Going to return requestHeaders: " + JSON.stringify(details.requestHeaders));
	return {requestHeaders: details.requestHeaders};
    }
    
    
    // This function simply deletes the entire 'Cookie' property from the HTTP request which is 
    // created by the browser from "default cookie store". Instead, it uses shadow_cookie_store
    // for our "cookie-investigator-tab". Depending on the cookie investigation state, the shadow-cookie-store
    // is populated by omitting certain cookie(s). This has added advantage that if a certain cookie is not
    // present but others are, then the server might set is in the first HTTP response. 
    // We will in turn set it in the shadow_cookie_store. 
    // Hence, the deleted cookie will be available for next HTTP request even if
    // we deleted it at the start in the shadow_cookie_store. If this is not done, then the webpage fetch
    // hangs for sites (because a single web page fech request consists of a lot of HTTP requests).
    // Sometimes, sites (for e.g. Google)
    // will check if other 'account cookies' are present and if so, will recreate the deleted cookie.
    // Once again, this recreation will happen in our shadow_cookie_store. But, we have to be careful 
    // and see if the value has been modified and if so, then carefully merge down the changes 
    // (In some cases like 'facebook', when it detects that one of the 'account' cookies is missing,
    //  it will simply reset other account cookies. Hence, in that case, merge to original cookie store
    //  does not make sense)
    // (I am not going to implement this merge unless it seems like sending old values screws up sessions).
    // In this case where server restores the deleted cookie, ultimately the Web page fetch would succeed
    // since the server resets the cookie. This is exactly what we want to test. What is the behavior of
    // the server when a particular cookie is missing.
    function replace_with_cookies_from_shadow_cookie_store(details) {
	// console.log("Here here: In REQUEST: SHADOW_COOKIE_STORE: " + JSON.stringify(shadow_cookie_store));
	var original_http_request_cookies = undefined;
	var final_cookies = {};
	var final_cookie_str = "";
	var curr_domain = get_domain(details.url.split("/")[2]);

	if (bool_is_cookie_testing_done) {
	    return;
	}

	req_epch_table[details.requestid] = epoch_id;
	
	if (my_state == 'st_cookie_test_start') {
	    for (var i = 0; i < details.requestHeaders.length; i++) {
		if (details.requestHeaders[i].name == "Cookie") {
		    http_request_cookies = details.requestHeaders.splice(i, 1);
		    break;
		}
	    }

	    return {requestHeaders: details.requestHeaders};
	}
	
	for (var i = 0; i < details.requestHeaders.length; i++) {
	    if (details.requestHeaders[i].name == "Referer") {
		if (get_domain(details.requestHeaders[i].value.split("/")[2]) == 'live.com') {
		    details.requestHeaders.splice(i, 1);
		    break;
		}
	    }
	}
			
	for (var i = 0; i < details.requestHeaders.length; i++) {
	    if (details.requestHeaders[i].name == "Cookie") {
		original_http_request_cookies = details.requestHeaders.splice(i, 1);
		break;
	    }
	}
	
	var original_cookie_array = [];
	if (original_http_request_cookies) {
	    original_cookie_array = original_http_request_cookies[0].value.split(";");
	    //console.log("Here here: Number of cookies in original HTTP request: " + original_cookie_array.length);
	}
	
	var curr_time = (new Date()).getTime()/1000;
	var is_secure = (details.url.split('/')[0] == 'https:') ? true : false;
	var my_cookies = [];

	for (c in shadow_cookie_store) {
	    var cookie_protocol = shadow_cookie_store[c].secure ? "https://" : "http://";
	    var cookie_url = cookie_protocol + shadow_cookie_store[c].domain + shadow_cookie_store[c].path;
	    var cookie_name_value = shadow_cookie_store[c].name + '=' + shadow_cookie_store[c].value;
	    var shadow_cookie_name = cookie_url + ':' + shadow_cookie_store[c].name;	    

	    if (is_subdomain(cookie_url, details.url)) {
		if (shadow_cookie_store[c].session) {
		    my_cookies.push(cookie_name_value);
		}
		else if (shadow_cookie_store[c].expirationDate > curr_time) {
		    my_cookies.push(cookie_name_value);
		}
	    }
	}
	
	// console.log("Here here: Here here here: URL: " + details.url);
	// console.log("Here here: Cookiessssssssss:" + JSON.stringify(my_cookies));
	
	// console.log("APPU DEBUG: Original Cookies: " + 
	//	    original_cookie_array.length +
	//	    ", Length of shadow_cookie_store: " +
	//	    Object.keys(shadow_cookie_store).length +
	//	    ", Number of cookies constructed from my shadow_cookie_store: " + 
	//	    my_cookies.length + 
	//	    ", URL: " + details.url);
	
	if (my_cookies.length == 0 &&
	    my_domain == curr_domain) {
	    if (my_state != "st_start_with_no_cookies" &&
		my_state != "st_GUB_cookiesets_block_DISABLED_and_NONDURING" &&
		my_state != "st_testing") {
		var cit = cookie_investigating_tabs[my_tab_id];
		if (cit.bool_state_in_progress) {
		    console.log("APPU DEBUG: URL: " + details.url);
		    // 		    console.log("APPU DEBUG: (RequestID: " + details.requestId + ")Shadow Cookie Store: " 
		    // 				+ JSON.stringify(shadow_cookie_store));
		}
		//console.log("Here here: URL: " + details.url);
	    }
	}
	var final_cookie_str = my_cookies.join("; "); 
	
	cookie_element = {
	    name: "Cookie",
	    value: final_cookie_str
	};
	
	details.requestHeaders.push(cookie_element);
	// console.log("Here here: Going to return requestHeaders: " + JSON.stringify(details.requestHeaders));
	return {requestHeaders: details.requestHeaders};
    }
 
    function dummy_noop_HTTP_request(details) {
	// This is basically NOOP function.
	// Useful when config_do_not_use_shadow_cookie_store is set to TRUE
	// In that case, in browser cookie store is manipualted.
	// Thus, no need for shadow cookie store.
	// Hence, no need to manipulate HTTP Requests or Responses.
	req_epch_table[details.requestid] = epoch_id;
    }

    function dummy_noop_HTTP_response(details) {
	// This is basically NOOP function.
	// Useful when config_do_not_use_shadow_cookie_store is set to TRUE
	// In that case, in browser cookie store is manipualted.
	// Thus, no need for shadow cookie store.
	// Hence, no need to manipulate HTTP Requests or Responses.

	var rh = details.responseHeaders;

	if (bool_is_cookie_testing_done) {
	    return {responseHeaders: []};
	}

	if (req_epch_table[details.requestid] != epoch_id) {
	    return {responseHeaders: []};
	}

	for (var i = 0; i < rh.length; i++) {
	    if (rh[i].name.toLowerCase() == "content-length") {
		increment_recvd_bytes(parseInt(rh[i].value));
	    }
	}
	return {responseHeaders: rh};
    }
   
    if (config_do_not_use_shadow_cookie_store) {
	return [
		dummy_noop_HTTP_request,
		dummy_noop_HTTP_response,
		update_tab_id, 
		init_cookie_investigation
		];
    }
    else {
	return [
		replace_with_cookies_from_shadow_cookie_store,
		handle_set_cookie_responses,
		update_tab_id, 
		init_cookie_investigation
		];
    }
}


// Current URL of the form : http://ab.cderf.com/sdsdwer/rtr/sds?ere
// First gets a list of all the cookies that will get sent for this url.
// Then it will suppress each cookie one after the other and see which
// cookies correspond to account cookies.
// opt_start_params: An object containing which "state" the testing should start,
//                   as well as additional parameters such as cookiesets to test
//                   if the state is "st_testing"
function detect_account_cookies(current_url, 
				cookie_names, 
				opt_config_cookiesets,
				opt_config_forceshut,
				opt_config_skip_initial_states,
				opt_start_params,
				opt_open_new_window,
				opt_do_not_use_shadow_cookie_store,
				opt_known_results_for_cookiesets) {
    // This returns an object with keys: domain + path + ":" + cookie_name and
    // value as hashed cookie value. Because the HTTP requests only have cookie names
    // and cookie names can be repeated often (as seen in google's case), there is no
    // way to distinguish between cookies. That will have to be done using hashed values.
    var account_cookies = {};

    var current_domain = get_domain(current_url.split("/")[2]);

    var config_cookiesets = "random";
    var config_forceshut = 5;
    var config_skip_initial_states = false;
    var config_open_new_window = false;
    var config_do_not_use_shadow_cookie_store = false;
    var config_known_results_for_cookiesets = false;

    // opt_config_forceshut will be time in minutes after which the cookie-investigation tab
    // would get closed. If not specified, default values is '5' minutes.
    config_forceshut = (opt_config_forceshut == undefined) ? 5 : opt_config_forceshut;

    if (opt_config_skip_initial_states != undefined) {
    // opt_config_skip_initial_states will make it jump directly to "st_LLB_cookiesets_block_DISABLED_and_NONDURING"
	config_skip_initial_states = opt_config_skip_initial_states;
    }

    if (opt_config_cookiesets != undefined) {
	// Possible values are: "none", "random", "all"
	config_cookiesets = opt_config_cookiesets;
    }

    if (opt_open_new_window != undefined) {
	// Possible values are: "none", "random", "all"
	config_open_new_window = opt_open_new_window;
    }

    if (opt_do_not_use_shadow_cookie_store != undefined) {
	config_do_not_use_shadow_cookie_store = opt_do_not_use_shadow_cookie_store;
    }

    if (opt_known_results_for_cookiesets != undefined) {
	config_known_results_for_cookiesets = opt_known_results_for_cookiesets;
    }

    if (cookie_names == undefined) {
	// Gets all 'DURING' cookies and not just cookies matching this URL
	account_cookies = get_account_cookies(current_url, false);
    }
    else {
	account_cookies = get_selective_account_cookies(current_url, cookie_names);
    }

    function continue_pending_cookie_investigation(cookie_investigation_state) {
	var config_start_params;
	if (opt_start_params != undefined) {
	    config_start_params = opt_start_params;
	}
	else {
	    config_start_params = {};
	    config_start_params.pending_cookie_investigation_state = cookie_investigation_state;
	}

	var ret_functions = cookie_investigator(account_cookies, 
						current_url, 
						config_cookiesets, 
						config_forceshut, 
						config_skip_initial_states,
						config_start_params,
						config_do_not_use_shadow_cookie_store,
						config_known_results_for_cookiesets);
	
	if (ret_functions != -1) {
	    open_cookie_slave_tab(current_url, 
				  ret_functions[0], 
				  ret_functions[1], 
				  ret_functions[2], 
				  ret_functions[3],
				  config_open_new_window);
	}
	else {
	    console.log("APPU Error: Could not do cookie-investigation for: " + current_url);
	}
    }
    
    if (!account_cookies ||
	Object.keys(account_cookies).length == 0) {
	get_all_cookies(current_domain, function process_cookies(all_cookies) {
		if (all_cookies.length <= 30) {
		    // This forces all cookies to be marked as account-cookies
		    pre_login_cookies[current_domain] = {};
		    pre_login_cookies[current_domain].cookies = {};
		    pre_login_cookies[current_domain].username = '';
		    detect_login_cookies(current_domain, function() {
			    account_cookies = get_account_cookies(current_url, false);
			    load_cookie_investigation_state(current_url, continue_pending_cookie_investigation);
			});
		}
		else {
		    var err_str = "APPU Error: No suspected account-cookies for: " + current_url; 
		    console.log(err_str);
		    print_appu_error(err_str);
		    return;
		}
	    });
    }
    else {
	load_cookie_investigation_state(current_url, continue_pending_cookie_investigation);
    }
}


function advance_to_next_cookieset(url) {
    function invoke_cookie_investigator_web_worker(cookie_investigation_state) {
	var url_wo_paramters = url.replace(/\?.*/,'');
	var cis_key = "Cookie Investigation State:" + url_wo_paramters; 

	if (!cookie_investigation_state) {
	    console.log("APPU DEBUG: No cookie_investigation_state for url: " + 
			url);
	    return;
	}

	if (cookie_investigation_state[cis_key]["next_llb_cookieset_array"] != undefined &&
	    cookie_investigation_state[cis_key]["next_gub_cookieset_array"] != undefined) {
	    console.log("APPU DEBUG: Both next_gub_cookieset_array and next_llb_cookieset_array are not undefined: " + 
			url);
	    return;
	}

	var csg = new Worker('cookieset_generator.js');
	
	csg.onmessage = (function(url, cookie_investigation_state) {
		return function(event) {
		    var msg = event.data;
		    
		    if (msg.status == 'success') {
			var modified_cookie_investigation_state = msg.modified_cookie_investigation_state;
			console.log("APPU DEBUG: Going to write modified cookie investigation state for url: " + 
				    url);
			modify_cookie_investigation_state(url, modified_cookie_investigation_state);    
		    }
		    else if (msg.status == 'error') {
			console.log("APPU Error: Error status from cookieset generator worker: " + 
				    JSON.stringify(msg));
		    }
		    else {
			console.log("APPU DEBUG: Message from cookieset generator worker: " + 
				    JSON.stringify(msg));
		    }
		}
	    })(url, cookie_investigation_state);

	csg.postMessage({
		'url' : url,
		    'cookie_investigation_state' : cookie_investigation_state
	    });
    }
    
    load_cookie_investigation_state(url, invoke_cookie_investigator_web_worker);
}


// ALL TEST FUNCTIONS & HELPING CODE
// Basic commands:
// Test specific cookies:
// detect_account_cookies("https://mail.google.com/mail/u/0/?shva=1#inbox", ["GX", "GXSP", "NID", "HSID"])
// 
// Test all cookies:
// detect_account_cookies("https://mail.google.com/mail/u/0/?shva=1#inbox")
// Test function that accepts an array of cookie names and 
// only returns those cookies and their values.
// Useful when one wants to test only one or two cookies.

// Testing shadow-cookie-store.
// test_get_cookie_store_snapshot('facebook.com', test_shadow_cookie_store); test_specific_tab(1305); test_record_specific_tab_cookies(1305)

function test_gx_pair_cookies() {
    var gx_cookie = "https://.mail.google.com/mail:GX";
    var test_cookies = [];

    var rc = get_domain_cookies("https://mail.google.com/");
    var aca = Object.keys(rc);

    detect_account_cookies("https://mail.google.com/mail/u/0/#inbox", 
			   undefined, 
			   "all", 
			   10, undefined, 
			   { starting_state : "st_testing", 
				   cookies_array : ["https://.mail.google.com/mail:GX"], 
				   account_cookies_array : aca });

    return;

    var cs = pii_vault.aggregate_data.session_cookie_store["google.com"];

    for (c in cs.cookies) {
	if (cs.cookies[c].current_state == 'absent') {
	    // No point in testing for cookies that are not present in the 
	    // default cookie-store.
	    continue;
	}

	if (cs.cookies[c].cookie_class == 'during') {
	    continue;
	}
	test_cookies.push([gx_cookie, c]);
    }

    return test_cookies;
}


function test_google_calendar_cookies() {
//     var omit_cookie = [
// 		       "https://mail.google.com/mail/u/0:GMAIL_AT",
// 		       "http://mail.google.com/mail/u/0:gmailchat",
// 		       "http://mail.google.com/mail/u/0:GMAIL_IMP",
// 		       "https://mail.google.com/mail:S",
// 		       "https://.mail.google.com/mail:GXSP",
// 		       "https://.mail.google.com/mail:GX",
// 		       "https://accounts.google.com/:GAPS",
// 		       "http://.google.com/:NID",
// 		       "https://accounts.google.com/:LSID",
// 		       "http://.google.com/:APISID",
// 		       "https://.google.com/:SAPISID",
// 		       "https://apis.google.com/:BEAT",
// 		       "https://plus.google.com/:OTZ"];

    var omit_cookie = [
		       "http://.google.com/:HSID",
		       "https://.google.com/:SSID",
		       "http://.google.com/:SID",
		       // 		       "https://accounts.google.com/:LSID"
		       ];

    var test_cookies = [];

    var rc = get_domain_cookies("https://mail.google.com/");
    var aca = Object.keys(rc);

    for (var i = 0; i < aca.length; i++) {
	if (omit_cookie.indexOf(aca[i]) != -1) {
	    test_cookies.push(aca[i]);
	}
    }


    detect_account_cookies("https://www.google.com/calendar/render", 
			   undefined, 
			   "all", 
			   10, undefined, 
			   { starting_state : "st_testing", 
				   cookies_array : [test_cookies], 
				   account_cookies_array : aca });


    return;
}



function test_netflix_cookies() {
//     var test_cookies = [
// 			[
// 			 'http://.netflix.com/:profilesNewUser',
// 			 ],
// 			];


//     var rc = get_domain_cookies("http://movies.netflix.com/WiHome");
//     var aca = Object.keys(rc);

//     detect_account_cookies("http://movies.netflix.com/WiHome", 
// 			   undefined, 
// 			   "all", 
// 			   10, undefined, 
// 			   { starting_state : "st_testing", 
// 				   cookies_array : test_cookies, 
// 				   account_cookies_array : aca });

//     return;

    var omit_cookies = [
			//			'http://.netflix.com/:NetflixId',
 			 "http://.netflix.com/:profilesNewUser",
 			 "https://.netflix.com/:SecureNetflixId",
 			 "http://.netflix.com/:profilesNewSession"
			];
    
    var test_cookies = [];

    var rc = get_domain_cookies("http://movies.netflix.com/WiHome");
    var aca = Object.keys(rc);

    for (var i = 0; i < aca.length; i++) {
	if (omit_cookies.indexOf(aca[i]) == -1) {
	    test_cookies.push(aca[i]);
	}
    }

    detect_account_cookies("http://movies.netflix.com/WiHome", 
			   undefined, 
			   "all", 
			   10, undefined, 
			   { starting_state : "st_testing", 
				   cookies_array : [test_cookies], 
				   account_cookies_array : aca });

    return;
}

function test_gdrive_cookies() {

    var omit_cookies = [
			// ["http://.google.com/:NID"],
			// ["http://.google.com/:HSID"],
			// ["https://mail.google.com/mail/u/0:GMAIL_AT"],
			["https://www.google.com/calendar:CAL"],
		       ];

    var pass_cookies = [];

    var rc = get_domain_cookies("https://drive.google.com/");
    var aca = Object.keys(rc);

    for (var j = 0; j < omit_cookies.length; j++) {
	var curr_pass_cookies = [];
	for (var i = 0; i < aca.length; i++) {
	    if (omit_cookies[j].indexOf(aca[i]) == -1) {
		curr_pass_cookies.push(aca[i]);
	    }
	}
	pass_cookies.push(curr_pass_cookies);
    }

    detect_account_cookies("https://drive.google.com/?tab=mo&authuser=0#my-drive", 
			   undefined, 
			   "all", 
			   10, undefined, 
			   { starting_state : "st_testing", 
				   cookies_array : pass_cookies, 
				   account_cookies_array : aca });


    return;
}

function test_netflix_cookies() {

    var omit_cookies = [
			[
			 "https://.netflix.com/:SecureNetflixId",
			 ],
		       ];

    var pass_cookies = [];

    var rc = get_domain_cookies("http://netflix.com/");
    var aca = Object.keys(rc);

    for (var j = 0; j < omit_cookies.length; j++) {
	var curr_pass_cookies = [];
	for (var i = 0; i < aca.length; i++) {
	    if (omit_cookies[j].indexOf(aca[i]) == -1) {
		curr_pass_cookies.push(aca[i]);
	    }
	}
	pass_cookies.push(curr_pass_cookies);
    }

    detect_account_cookies("http://movies.netflix.com/WiHome", 
			   undefined, 
			   "all", 
			   10, undefined, 
			   { starting_state : "st_testing", 
				   cookies_array : pass_cookies, 
				   account_cookies_array : aca });


    return;
}

function test_gmail_cookies() {
    var test_cookies = [
			[
			 "https://accounts.google.com/:LSID",
			 ],
			[
			 "http://.google.com/:SID",
			 ],
			[
			 "https://.google.com/:SSID",
			 ],
			[
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "http://.google.com/:SID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "https://.google.com/:SSID"
			 ],
			[
			 "http://.google.com/:SID",
			 "https://.google.com/:SSID",
			 ],
			[
			 "http://.google.com/:SID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://.google.com/:SSID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "http://.google.com/:SID",
			 "https://.google.com/:SSID",
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "http://.google.com/:SID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "https://.google.com/:SSID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "http://.google.com/:SID",
			 "https://.google.com/:SSID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "http://.google.com/:SID",
			 "https://.google.com/:SSID",
			 "http://.google.com/:HSID"
			 ],
			];


    var rc = get_domain_cookies("https://mail.google.com/");
    var aca = Object.keys(rc);

    detect_account_cookies("https://mail.google.com/mail/u/0/#inbox", 
			   undefined, 
			   "all", 
			   10, undefined, 
			   { starting_state : "st_testing", 
				   cookies_array : test_cookies, 
				   account_cookies_array : aca });

    return;
}

function test_google_cookies() {
    var test_cookies = [
			[
			 "https://accounts.google.com/:LSID",
			 ],
			[
			 "http://.google.com/:SID",
			 ],
			[
			 "https://.google.com/:SSID",
			 ],
			[
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "http://.google.com/:SID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "https://.google.com/:SSID"
			 ],
			[
			 "http://.google.com/:SID",
			 "https://.google.com/:SSID",
			 ],
			[
			 "http://.google.com/:SID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://.google.com/:SSID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "http://.google.com/:SID",
			 "https://.google.com/:SSID",
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "http://.google.com/:SID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "https://.google.com/:SSID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "http://.google.com/:SID",
			 "https://.google.com/:SSID",
			 "http://.google.com/:HSID"
			 ],
			[
			 "https://accounts.google.com/:LSID",
			 "http://.google.com/:SID",
			 "https://.google.com/:SSID",
			 "http://.google.com/:HSID"
			 ],
			];


    var rc = get_domain_cookies("https://mail.google.com/");
    var aca = Object.keys(rc);

    detect_account_cookies("https://www.google.com/", 
			   undefined, 
			   "all", 
			   10, undefined, 
			   { starting_state : "st_testing", 
				   cookies_array : test_cookies, 
				   account_cookies_array : aca });

    return;
}

function test_youtube_cookies() {
    var test_cookies = [
			["http://.youtube.com/:SID",
			 "https://.youtube.com/:SSID"]
			];


    var rc = get_domain_cookies("http://www.youtube.com");
    var aca = Object.keys(rc);

    detect_account_cookies("http://www.youtube.com", 
			   undefined, 
			   "all", 
			   10, undefined, 
			   { starting_state : "st_testing", 
				   cookies_array : test_cookies, 
				   account_cookies_array : aca },
			   true);

    return;
}


var test_shadow_cookie_store = {};

function test_handle_set_cookie_responses(details) {
    var final_rh = [];
    var rh = details.responseHeaders;
    for (var i = 0; i < rh.length; i++) {
	if (rh[i].name.toLowerCase() != "set-cookie") {
	    final_rh.push(rh[i]);
	}
	else {
	    console.log("APPU DEBUG: HTTP Request Header, Set-Cookie: " + JSON.stringify(rh[i]));
	    var cookie_struct = {};
	    var cookie_properties = rh[i].value.split(";");
	    var cookie_name_value = cookie_properties.shift();

	    var matched_entries = cookie_name_value.match(/(.+?)=(.*)/);
	    cookie_struct.name = matched_entries[1].trim();
	    cookie_struct.value = matched_entries[2].trim();
			
	    var my_url = details.url;

	    // Default values for Domain and Path.
	    // If set-cookie does not contain those values then
	    // these default values will be used.
	    cookie_struct.domain = my_url.split("/")[2];
	    cookie_struct.path = "/" + my_url.split("/").slice(3).join("/");

	    cookie_struct.expirationDate = undefined;
	    cookie_struct.hostOnly = true;
	    cookie_struct.httpOnly = false;
	    cookie_struct.secure = false;
	    var cookie_protocol = "http://";
	    cookie_struct.session = false;

	    for (var j = 0; j < cookie_properties.length; j++) {
		var curr_property = cookie_properties[j].trim();
		if (curr_property.indexOf("Path") != -1 ||
		    curr_property.indexOf("path") != -1) {
		    var matched_entries = curr_property.match(/(.+?)=(.*)/);
		    cookie_struct.path = matched_entries[2].trim();
		}
		else if (curr_property.indexOf("Expires") != -1 ||
			 curr_property.indexOf("expires") != -1) {
		    var matched_entries = curr_property.match(/(.+?)=(.*)/);
		    cookie_struct.expirationDate = (new Date(matched_entries[2].trim())).getTime()/1000;
		}
		else if (curr_property.indexOf("Max-Age") != -1 ||
			 curr_property.indexOf("max-age") != -1) {
		    var matched_entries = curr_property.match(/(.+?)=(.*)/);
		    var max_age = matched_entries[2].trim();
		    if (max_age[0] == '-') {
			max_age = max_age.substr(1);
		    }
		    if (!(/^\d+$/.test(max_age))) {
			continue;
		    }
		    cookie_struct.expirationDate = (new Date()).getTime()/1000 + parseInt(max_age, 10);
		}
		else if (curr_property.indexOf("Domain") != -1 ||
			 curr_property.indexOf("domain") != -1) {
		    var matched_entries = curr_property.match(/(.+?)=(.*)/);
		    cookie_struct.domain = matched_entries[2].trim();
		}
		else if (curr_property.indexOf("Secure") != -1 ||
			 curr_property.indexOf("secure") != -1) {
		    cookie_struct.secure = true;
		    cookie_protocol = "https://";
		}
		else if (curr_property.indexOf("HttpOnly") != -1 ||
			 curr_property.indexOf("httponly") != -1) {
		    cookie_struct.httpOnly = true;
		}
		else if (curr_property.indexOf("Priority") != -1 ||
			 curr_property.indexOf("priority") != -1) {
		    // Do nothing
		    continue;
		}
		else {
		    console.log("APPU DEBUG: Error: Got a wrong cookie property: " + curr_property);
		}
	    }

	    if (cookie_struct.domain[0] == '.') {
		cookie_struct.hostOnly = false;
	    }
	    if (!cookie_struct.expirationDate) {
		cookie_struct.session = true;
	    }

	    var cookie_key = cookie_protocol + cookie_struct.domain + cookie_struct.path + ":" + cookie_struct.name; 
	    test_shadow_cookie_store[cookie_key] = cookie_struct;
	}
    }
    return {responseHeaders: final_rh};
}

function test_get_cookie_store_snapshot(my_domain, cookie_store) {
    var cb_cookies = (function(my_domain, cookie_store) {
	    return function(all_cookies) {
		console.log("APPU DEBUG: Taking snapshot: " + my_domain + ", Length: " + all_cookies.length);
		for (var i = 0; i < all_cookies.length; i++) {
		    var cookie_name = all_cookies[i].name;
		    var cookie_domain = all_cookies[i].domain;
		    var cookie_path = all_cookies[i].path;
		    var cookie_protocol = (all_cookies[i].secure) ? "https://" : "http://";
		    var cookie_key = cookie_protocol + cookie_domain + cookie_path + ":" + cookie_name;
		    cookie_store[cookie_key] = all_cookies[i];
		}
	    }
	})(my_domain, cookie_store);
    
    get_all_cookies(my_domain, cb_cookies);
}


function test_replace_with_cookies_from_shadow_cookie_store(details) {
    var domain = get_domain(details.url.split("/")[2]);
    var original_http_request_cookies = undefined;
    var final_cookies = {};
    var final_cookie_str = "";
    var original_cookie_array = [];

    for (var i = 0; i < details.requestHeaders.length; i++) {
	if (details.requestHeaders[i].name == "Cookie") {
	    original_http_request_cookies = details.requestHeaders.splice(i, 1);
	    break;
	}
    }
    
    if (original_http_request_cookies) {
	var temp_cookie_array = original_http_request_cookies[0].value.split(";");

	temp_cookie_array.forEach(function(value, index, array) {
		original_cookie_array.push(value.trim());
	    });

	console.log("APPU DEBUG: Number of cookies in original HTTP request: " + original_cookie_array.length);
    }
    
    var curr_time = (new Date()).getTime()/1000;
    var is_secure = (details.url.split('/')[0] == 'https:') ? true : false;
    var my_cookies = [];
    
    console.log("APPU DEBUG: Length of shadow cookie store: " + Object.keys(test_shadow_cookie_store).length);
    for (c in test_shadow_cookie_store) {
	var cookie_protocol = test_shadow_cookie_store[c].secure ? "https://" : "http://";
	var cookie_url = cookie_protocol + test_shadow_cookie_store[c].domain + test_shadow_cookie_store[c].path;
	var cookie_name_value = test_shadow_cookie_store[c].name + '=' + test_shadow_cookie_store[c].value;
	
	if (is_subdomain(cookie_url, details.url)) {
	    if (test_shadow_cookie_store[c].session) {
		my_cookies.push(cookie_name_value);
	    }
	    else if (test_shadow_cookie_store[c].expirationDate > curr_time) {
		my_cookies.push(cookie_name_value);
	    }
	}
    }
    
    console.log("APPU DEBUG: Number of cookies constructed from my test_shadow_cookie_store: " + 
		my_cookies.length + ", URL: " + details.url);

    if (my_cookies.sort().compare(original_cookie_array.sort())) {
	console.log("APPU DEBUG: Cookies match, Everything works - 1");
    }
    else {
	if (my_cookies.length != original_cookie_array.length) {
	    console.log("APPU DEBUG: OOOOPPPPSSSS, Cookie length mismatch");
	}
	else {
	    var everything_works = true;
	    for (var j = 0; j < my_cookies.length; j++) {
		try {

		var matched_entries = my_cookies[j].match(/(.+?)=(.*)/);
		var my_c_name = matched_entries[1].trim();
		var matched_entries = original_cookie_array[j].match(/(.+?)=(.*)/);
		var o_c_name = matched_entries[1].trim();
		if (my_c_name != o_c_name) {
		    console.log("APPU DEBUG: OOOOPPPPSSSS, Cookie names mismatch, " + my_c_name + ", " + o_c_name);
		    everything_works = false;
		}

		}
		catch(e) {
		    console.log("Here here: " + JSON.stringify(e));
		}
	    }
	    if (everything_works) {
		console.log("APPU DEBUG: Cookies match, Everything works - 2");
	    }
	}
    }

    final_cookie_str = my_cookies.join("; "); 
    
    cookie_element = {
	name: "Cookie",
	value: final_cookie_str
    };
    
    details.requestHeaders.push(cookie_element);
    //    console.log("Here here: Going to return requestHeaders: " + JSON.stringify(details.requestHeaders));
    return {requestHeaders: details.requestHeaders};
}


function test_specific_tab(tab_id) {
    chrome.webRequest.onBeforeSendHeaders.addListener(test_replace_with_cookies_from_shadow_cookie_store,
						      {
							  "tabId": tab_id,
							      "urls": ["<all_urls>"]
							      },
						      ["blocking", "requestHeaders"]);
    
    chrome.webRequest.onHeadersReceived.addListener(test_handle_set_cookie_responses, {
	    "tabId": tab_id,
		"urls": ["<all_urls>"]
		},
	["blocking", "responseHeaders"]);
}


function record_request_header(details) {
    console.log("APPU DEBUG: Recording request header: " + JSON.stringify(details));
}


function record_response_header(details) {
    console.log("APPU DEBUG: Recording response header: " + JSON.stringify(details));
}

function test_record_specific_tab_cookies(tab_id) {
    chrome.webRequest.onSendHeaders.addListener(record_request_header,
						{
						    "tabId": tab_id,
							"urls": ["<all_urls>"]
							},
						["requestHeaders"]);
    
    chrome.webRequest.onHeadersReceived.addListener(record_response_header, {
	    "tabId": tab_id,
		"urls": ["<all_urls>"]
		},
	["responseHeaders"]);
}

function test_compare_cookieset_generation(x, tot_cookies) {
    var rc1 = generate_binary_cookiesets_X("zz", x, tot_cookies, [], []);
    var rc2 = generate_binary_cookiesets_X_efficient("zz", x, tot_cookies, [], []);
    if (JSON.stringify(rc1.binary_cookiesets) != JSON.stringify(rc2.binary_cookiesets)) {
	console.log("APPU Error: Cookiesets generated efficiently do not match with exponential cookieset generation");
    }
    else {
	console.log("APPU DEBUG: Success, cookiesets match");
    }
}

function test_compare_gub_cookieset_generation(x, tot_cookies) {
    var rc1 = generate_super_cookiesets("zz", tot_cookies, [], [], [], x);
    var rc2 = generate_super_cookiesets_efficient("zz", x, tot_cookies, [], [], []);

    if (JSON.stringify(rc1.binary_cookiesets) != JSON.stringify(rc2.binary_cookiesets)) {
	console.log("APPU Error: Cookiesets generated efficiently do not match with exponential cookieset generation");
    }
    else {
	console.log("APPU DEBUG: Success, cookiesets match");
    }
}

function test_twitter() {
    var a = new Date();
    var options = {
	url : "https://.twitter.com",
	name: "auth_token",
	value: "3",
	domain: "https://.twitter.com",
	path: "/",
	secure: true,
	httpOnly: true,
	expirationDate: a.getTime() + 3600000
    };

    chrome.cookies.set(options, function(rc) {
	    if (rc == null) {
		console.log("Here here: Failed to set the cookie because: " + JSON.stringify(chrome.runtime.lastError));
	    }
	    else {
		console.log("Here here: Success: " + JSON.stringify(rc));
	    }
	});
}

function test_cookieset_generation(tot_cookies,
				   s_a_LLB_decimal_cookiesets,
				   s_na_LLB_decimal_cookiesets,
				   s_na_GUB_decimal_cookiesets,
				   cookiesets_optimization_stats) {
    var curr_binary_cs   = undefined;
    var bcs_get_next     = [];
    var dcs_get_next     = [];

    do {
	var rc = get_next_binary_cookieset_X(curr_binary_cs, 
					     3, 
					     tot_cookies, 
					     s_a_LLB_decimal_cookiesets,
					     s_na_LLB_decimal_cookiesets,
					     s_a_GUB_decimal_cookiesets,
					     s_na_GUB_decimal_cookiesets,
					     "normal",
					     cookiesets_optimization_stats);
	if (rc == 0) {
	    break;
	}
	else if (rc == 1) {
	    console.log("APPU DEBUG: BIG ERROR");
	    return;
	}
	else if (rc == -1) {
	    console.log("APPU DEBUG: BIG ERROR");
	    return;
	}
	else {
	    bcs_get_next.push(rc.binary_cookieset);
	    dcs_get_next.push(rc.decimal_cookieset);
	}
    } while(1);

    var rc = generate_binary_cookiesets_X_efficient("aa", 
						    3, 
						    tot_cookies, 
						    s_a_LLB_decimal_cookiesets,
						    s_na_GUB_decimal_cookiesets);

    console.log("APPU DEBUG: Cookiesets generated by get_next(): " + bcs_get_next.length);
    console.log("APPU DEBUG: Cookiesets generated by get_next(): " + rc.binary_cookiesets.length);
}

function test_content_length_reader(details) {
    console.log("I AM HERE, I AM HERE, I AM HERE, I AM HERE, I AM HERE, I AM HERE, I AM HERE, ");
    for (var i = 0; i < details.requestHeaders.length; i++) {
	if (details.requestHeaders[i].name.toLowerCase() == "content-length") {
	    console.log("");
	    console.log("MUHAHAHAHAH HERE HERE HERE:" + details.requestHeaders[i].value);
	    console.log("");
	    increment_sent_bytes(parseInt(details.requestHeaders[i].value));
	}
    }
}


function test_previous_cookieset_generation(tot_cookies,
					    num_drop_or_pass,
					    bit_val) {
    var curr_bin_cs = null;
    var curr_bin_prev_cs = null;
    var tot_verified = 0;

    curr_bin_cs = decimal_to_binary_array(0, tot_cookies);
    var rc = set_last_X_bits_to_bit_val(num_drop_or_pass, 0, curr_bin_cs, bit_val);    
    if (rc == -1) {
	console.log("Here here: Some error");
	return 1;
    }

    do {
	var copy_curr_bin_cs = curr_bin_cs.slice(0);
	var test_curr_bin_prev_cs = generate_previous_binary_cookieset_X(copy_curr_bin_cs, bit_val);
	if (JSON.stringify(test_curr_bin_prev_cs) != JSON.stringify(curr_bin_prev_cs)) {
	    console.log("APPU Error: Prev cookiesets do not match for: " + JSON.stringify(curr_bin_prev_cs));
	    console.log("APPU Error: Tot verified: " + tot_verified);
	    return;
	}
	tot_verified += 1;
	curr_bin_prev_cs = curr_bin_cs.slice(0);
    } while (generate_next_binary_cookieset_X(curr_bin_cs, bit_val) != null);

    console.log("APPU DEBUG: Number of cookisets verified: " + tot_verified);

}

function test_comcast_cookie_set(val) {
    var a = new Date();

    var options = {
	"url":"http://.comcast.net/",
	"name":"ipa_failed",
	"value": JSON.stringify(val),
	"path": "/",
	"storeId" : "0",
	"expirationDate": a.getTime()/1000 + 3600000 ,
	"secure" : false,
	"httpOnly" : false
    };


    chrome.cookies.set(options, function(rc) {
	    if (rc == null) {
		console.log("Here here: Failed to set the cookie because: " + JSON.stringify(chrome.runtime.lastError));
	    }
	    else {
		console.log("Here here: Success: " + JSON.stringify(rc));
	    }
	});
}

function test_att_com() {
    var current_url = "https://www.att.com/olam/showWirelessDashboardAction.myworld";

    var shift_as_suspected = [
			      "http://www.att.com/:PD_STATEFUL_93301f62-6d1b-11e0-a40a-00215ad3a3f0",
			      "http://www.att.com/:EDOCSSESSIONID",
			      "http://www.att.com/:stack",
			      "http://www.att.com/:PD_STATEFUL_93404518-6d1b-11e0-ba11-00215ad3a3f0",
			      ];

    for (var i = 0; i < shift_as_suspected.length; i++) {
	if (shift_as_suspected[i] in pii_vault.aggregate_data.session_cookie_store["att.com"].cookies) {
	    pii_vault.aggregate_data.session_cookie_store["att.com"].cookies[shift_as_suspected[i]].is_part_of_account_cookieset = true;
	}
    }
    flush_aggregate_data();

    var opt_known_results_for_cookiesets = {};

    opt_known_results_for_cookiesets.s_a_LLB_cookiesets_array = [];
    var known_llb_account_disabled_cookies = [
					      ["http://www.att.com/:EDOCSSESSIONID"],
					      ["http://www.att.com/:stack"],					      
					      ["https://www.att.com/:PD-S-SESSION-ID",
					       "https://.att.com/:PD-ID"],
// 					      ["http://myattdx03.att.com/:JSESSIONID",
// 					       "https://.att.com/:PD-ID"],
					      ];

    for (var j = 0; j < known_llb_account_disabled_cookies.length; j++) {
	var curr_array = known_llb_account_disabled_cookies[j].slice(0);
	opt_known_results_for_cookiesets.s_a_LLB_cookiesets_array.push(curr_array);
    }

//     var known_gub_account_enabled_cookies = [
// 					     [
// 					      "http://www.att.com/:PD_STATEFUL_94438114-6d1b-11e0-b329-00215ad3a3f0",
// 					      "http://www.att.com/:PD_STATEFUL_942b3ea6-6d1b-11e0-adef-00215ad3a3f0",
// 					      "http://www.att.com/:EDOCSSESSIONID",
// 					      "http://www.att.com/:stack",
// 					      ],
// 					     ["http://www.att.com/:PD_STATEFUL_94438114-6d1b-11e0-b329-00215ad3a3f0",
// 					      "http://myattp2w86.att.com/:JSESSIONID",
// 					      "http://www.att.com/:EDOCSSESSIONID",
// 					      "http://www.att.com/:stack",
// 					      ], 
// 					     ];

//     opt_known_results_for_cookiesets.s_a_GUB_cookiesets_array = [];



//     account_cookies = get_account_cookies(current_url, false);

//     for (var j = 0; j < known_gub_account_enabled_cookies.length; j++) {
// 	var curr_array = known_gub_account_enabled_cookies[j];
// 	var final_array = [];
// 	for (ck in account_cookies) {
// 	    if (curr_array.indexOf(ck) == -1) {
// 		final_array.push(ck);
// 	    }
// 	}
// 	opt_known_results_for_cookiesets.s_a_GUB_cookiesets_array.push(final_array);
//     }

    detect_account_cookies(current_url, 
			   undefined, 
			   "all", 
			   180, 
			   undefined, 
			   undefined, 
			   true,
			   false,
			   opt_known_results_for_cookiesets);
}


function test_combiusa() {
    var current_url = "https://www.combiusa.com/myaccount.asp";

    var opt_known_results_for_cookiesets = {};

    opt_known_results_for_cookiesets.s_a_LLB_cookiesets_array = [];
    var known_llb_account_disabled_cookies = [
					      ["http://www.combiusa.com/:slt"],
					      ];

    for (var j = 0; j < known_llb_account_disabled_cookies.length; j++) {
	var curr_array = known_llb_account_disabled_cookies[j].slice(0);
	opt_known_results_for_cookiesets.s_a_LLB_cookiesets_array.push(curr_array);
    }

    detect_account_cookies(current_url, 
			   undefined, 
			   "all", 
			   180, 
			   undefined, 
			   undefined, 
			   true,
			   false,
			   opt_known_results_for_cookiesets);
}


function test_modelroundup() {
    var current_url = "https://www.modelroundup.com/myaccount.asp";

    var opt_known_results_for_cookiesets = {};

    opt_known_results_for_cookiesets.s_a_LLB_cookiesets_array = [];
    var known_llb_account_disabled_cookies = [
					      ["http://www.modelroundup.com/:slt"],
					      ];

    for (var j = 0; j < known_llb_account_disabled_cookies.length; j++) {
	var curr_array = known_llb_account_disabled_cookies[j].slice(0);
	opt_known_results_for_cookiesets.s_a_LLB_cookiesets_array.push(curr_array);
    }

    detect_account_cookies(current_url, 
			   undefined, 
			   "all", 
			   180, 
			   undefined, 
			   undefined, 
			   true,
			   false,
			   opt_known_results_for_cookiesets);
}

// e.g. "www", "niagarafaucets"
// e.g. "shop", "timeout"
function test_volusion_site(prefix, sn) {
    var current_url = "https://" + prefix + "." + sn + ".com/myaccount.asp";

    var opt_known_results_for_cookiesets = {};

    opt_known_results_for_cookiesets.s_a_LLB_cookiesets_array = [];
    var known_llb_account_disabled_cookies = [
					      ["http://" + prefix + "." + sn + ".com/:slt"],
					      ];

    for (var j = 0; j < known_llb_account_disabled_cookies.length; j++) {
	var curr_array = known_llb_account_disabled_cookies[j].slice(0);
	opt_known_results_for_cookiesets.s_a_LLB_cookiesets_array.push(curr_array);
    }

    detect_account_cookies(current_url, 
			   undefined, 
			   "all", 
			   180, 
			   undefined, 
			   undefined, 
			   true,
			   false,
			   opt_known_results_for_cookiesets);
}