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/*
* noVNC: HTML5 VNC client
* Copyright (C) 2019 The noVNC Authors
* Licensed under MPL 2.0 (see LICENSE.txt)
*
* See README.md for usage and integration instructions.
*/
import { initLogging as mainInitLogging } from '../core/util/logging.js';
// init log level reading the logging HTTP param
export function initLogging(level) {
"use strict";
if (typeof level !== "undefined") {
mainInitLogging(level);
} else {
const param = document.location.href.match(/logging=([A-Za-z0-9._-]*)/);
mainInitLogging(param || undefined);
}
}
// Read a query string variable
// A URL with a query parameter can look like this (But will most probably get logged on the http server):
// https://www.example.com?myqueryparam=myvalue
//
// For privacy (Using a hastag #, the parameters will not be sent to the server)
// the url can be requested in the following way:
// https://www.example.com#myqueryparam=myvalue&password=secreatvalue
//
// Even Mixing public and non public parameters will work:
// https://www.example.com?nonsecretparam=example.com#password=secreatvalue
export function getQueryVar(name, defVal) {
"use strict";
const re = new RegExp('.*[?&]' + name + '=([^&#]*)'),
match = ''.concat(document.location.href, window.location.hash).match(re);
if (typeof defVal === 'undefined') { defVal = null; }
if (match) {
return decodeURIComponent(match[1]);
}
return defVal;
}
// Read a hash fragment variable
export function getHashVar(name, defVal) {
"use strict";
const re = new RegExp('.*[&#]' + name + '=([^&]*)'),
match = document.location.hash.match(re);
if (typeof defVal === 'undefined') { defVal = null; }
if (match) {
return decodeURIComponent(match[1]);
}
return defVal;
}
// Read a variable from the fragment or the query string
// Fragment takes precedence
export function getConfigVar(name, defVal) {
"use strict";
const val = getHashVar(name);
if (val === null) {
return getQueryVar(name, defVal);
}
return val;
}
/*
* Cookie handling. Dervied from: http://www.quirksmode.org/js/cookies.html
*/
// No days means only for this browser session
export function createCookie(name, value, days) {
"use strict";
let date, expires;
if (days) {
date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
expires = "; expires=" + date.toGMTString();
} else {
expires = "";
}
let secure;
if (document.location.protocol === "https:") {
secure = "; secure";
} else {
secure = "";
}
document.cookie = name + "=" + value + expires + "; path=/" + secure;
}
export function readCookie(name, defaultValue) {
"use strict";
const nameEQ = name + "=";
const ca = document.cookie.split(';');
for (let i = 0; i < ca.length; i += 1) {
let c = ca[i];
while (c.charAt(0) === ' ') {
c = c.substring(1, c.length);
}
if (c.indexOf(nameEQ) === 0) {
return c.substring(nameEQ.length, c.length);
}
}
return (typeof defaultValue !== 'undefined') ? defaultValue : null;
}
export function eraseCookie(name) {
"use strict";
createCookie(name, "", -1);
}
/*
* Setting handling.
*/
let settings = {};
export function initSettings() {
if (!window.chrome || !window.chrome.storage) {
settings = {};
return Promise.resolve();
}
return new Promise(resolve => window.chrome.storage.sync.get(resolve))
.then((cfg) => { settings = cfg; });
}
// Update the settings cache, but do not write to permanent storage
export function setSetting(name, value) {
settings[name] = value;
}
// No days means only for this browser session
export function writeSetting(name, value) {
"use strict";
if (settings[name] === value) return;
settings[name] = value;
if (window.chrome && window.chrome.storage) {
window.chrome.storage.sync.set(settings);
} else {
localStorage.setItem(name, value);
}
}
export function readSetting(name, defaultValue) {
"use strict";
let value;
if ((name in settings) || (window.chrome && window.chrome.storage)) {
value = settings[name];
} else {
value = localStorage.getItem(name);
settings[name] = value;
}
if (typeof value === "undefined") {
value = null;
}
if (value === null && typeof defaultValue !== "undefined") {
return defaultValue;
}
return value;
}
export function eraseSetting(name) {
"use strict";
// Deleting here means that next time the setting is read when using local
// storage, it will be pulled from local storage again.
// If the setting in local storage is changed (e.g. in another tab)
// between this delete and the next read, it could lead to an unexpected
// value change.
delete settings[name];
if (window.chrome && window.chrome.storage) {
window.chrome.storage.sync.remove(name);
} else {
localStorage.removeItem(name);
}
}
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