/usr/share/xul-ext/self-destructing-cookies/lib/history.js is in xul-ext-self-destructing-cookies 0.4.12-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | /* Copyright (c) 2013 Ove Sörensen <sdc@elektro-eel.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
"use strict";
// how many ms should a url be open until we consider it legitimate
const MIN_ACTIVE = 1000;
// this class manages the history and current state of a tab
exports.History = function History(capacity) {
this.capacity = capacity;
this.domains = [];
this.timestamps = [];
}
exports.History.prototype.add = function(domain) {
var removed = [];
var now = Date.now();
var oldtimestamp = null;
// remove previous instance of the domain
var i = this.domains.indexOf(domain);
if (i >= 0) {
oldtimestamp = this.timestamps[i];
this.domains.splice(i, 1);
this.timestamps.splice(i, 1);
}
// we don't keep previous domains active if they
// were only with us for a short time. this looks
// suspiciously like someone tried to sneak in a
// cookie in via redirect-trickery
if (this.domains.length > 0 && now - this.timestamps[this.timestamps.length - 1] < MIN_ACTIVE) {
// if the user adjusted his system clock back in time,
// better do nothing
if (this.timestamps[this.timestamps.length - 1] <= now) {
removed.push(this.domains[this.domains.length - 1]);
this.domains.splice(-1, 1);
this.timestamps.splice(-1, 1);
}
}
// add domain to the history
this.domains.push(domain);
// preserve the oldest known timestamp in the history for this domain
this.timestamps.push(oldtimestamp ? Math.min(oldtimestamp, now) : now);
// prune history if it is too long
if (this.domains.length > this.capacity) {
removed.push(this.domains[0]);
this.domains.splice(0, 1);
this.timestamps.splice(0, 1);
}
// return newly active domains and those that are no longer active.
// if we just shuffled domains around, we don't have to report them
// as active
return [(i >= 0) ? [] : [domain], removed];
}
exports.History.prototype.activeDomains = function() {
return this.domains;
}
exports.History.prototype.toString = function() {
return this.activeDomains().toString();
}
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