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privacy-redirect
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Code Issues Releases Wiki Activity

OSM redirects (except embedded maps)

This commit is contained in:
SimonBrazell 2020-02-24 14:19:56 +11:00
parent 97ca48b1fe
commit fb0dad56ba
5 changed files with 40 additions and 101 deletions
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9
README.md
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@ -3,14 +3,9 @@
- [Chrome Extension](https://chrome.google.com/webstore/detail/privacy-redirect/pmcmeagblkinmogikoikkdjiligflglb)
- [Firefox Add-on](https://addons.mozilla.org/en-US/firefox/addon/privacy-redirect/)
A simple browser extension that redirects Twitter, YouTube & Instagram requests to privacy friendly alternatives - [Nitter](https://github.com/zedeus/nitter), [Invidious](https://github.com/omarroth/invidious) & [Bibliogram](https://github.com/cloudrac3r/bibliogram).
A simple web extension that redirects Twitter, YouTube, Instagram & Google Maps requests to privacy friendly alternatives - [Nitter](https://github.com/zedeus/nitter), [Invidious](https://github.com/omarroth/invidious), [Bibliogram](https://github.com/cloudrac3r/bibliogram) & [OpenStreetMap](https://www.openstreetmap.org/).
Listens for and redirects requests made to the following:
- **Twitter -** `twitter.com`, `www.twitter.com`, `mobile.twitter.com`
- **YouTube -** `youtube.com`, `www.youtube.com`, `youtube-nocookie.com`, `www.youtube-nocookie.com`, `m.youtube.com`
- **Instagram -** `instagram.com`, `www.instagram.com`, `help.instagram.com`, `about.instagram.com`.
Allows for setting custom [Nitter](https://github.com/zedeus/nitter/wiki/Instances), [Invidious](https://github.com/omarroth/invidious/wiki/Invidious-Instances) & [Bibliogram](https://github.com/cloudrac3r/bibliogram/wiki/Instances) instances and toggling redirects on & off.
Allows for setting custom [Nitter](https://github.com/zedeus/nitter/wiki/Instances), [Invidious](https://github.com/omarroth/invidious/wiki/Invidious-Instances), [Bibliogram](https://github.com/cloudrac3r/bibliogram/wiki/Instances) & OpenStreetMap instances and toggling all redirects on & off.
## Build

101
background.js
View File

@ -8,7 +8,7 @@ const bibliogramDefault = 'https://bibliogram.art';
const instagramRegex = /((www|about|help)\.)?instagram\.com/;
const instagramPathsRegex = /(\/a|\/admin|\/api|\/favicon.ico|\/static|\/imageproxy|\/p|\/u|\/developer|\/about|\/legal|\/explore|\/director)/;
const osmDefault = 'https://openstreetmap.org';
const googleMapsRegex = /(google).*(\/maps)/;
const googleMapsRegex = /https?:\/\/((www|maps)\.)?(google).*(\/maps)/;
const latLngZoomRegex = /@(-?\d[0-9.]*),(-?\d[0-9.]*),(\d{1,2})[.z]/;
const dataLatLngRegex = /(!3d|!4d)(-?[0-9]{1,10}.[0-9]{1,10})/g;
@ -21,7 +21,9 @@ let disableInvidious;
let disableBibliogram;
let disableOsm;
chrome.storage.sync.get(
window.browser = window.browser || window.chrome;
browser.storage.sync.get(
[
'nitterInstance',
'invidiousInstance',
@ -44,7 +46,7 @@ chrome.storage.sync.get(
}
);
chrome.storage.onChanged.addListener(changes => {
browser.storage.onChanged.addListener(changes => {
if ('nitterInstance' in changes) {
nitterInstance = changes.nitterInstance.newValue || nitterDefault;
}
@ -71,66 +73,16 @@ chrome.storage.onChanged.addListener(changes => {
}
});
// https://github.com/tankaru/ReplaceG2O
function deg2rad(deg) {
return deg / 360 * 2 * Math.PI;
}
function rad2deg(rad) {
return rad / 2 / Math.PI * 360.0;
}
function getTileNumber(lat, lon, zoom) {
xtile = Math.round((lon + 180.0) / 360.0 * 2 ** zoom);
ytile = Math.round((1 - Math.log(Math.tan(deg2rad(lat)) + 1 / (Math.cos(deg2rad(lat)))) / Math.PI) / 2 * 2 ** zoom);
return [xtile, ytile];
}
function getLonLat(xtile, ytile, zoom) {
n = 2 ** zoom;
lon = xtile / n * 360.0 - 180.0;
lat = rad2deg(Math.atan(Math.sinh(Math.PI * (1 - 2 * ytile / n))));
return [lon, lat];
}
function LonLat_to_bbox(lat, lon, zoom) {
width = 600;
height = 450;
tile_size = 256;
[xtile, ytile] = getTileNumber(lat, lon, zoom);
xtile_s = (xtile * tile_size - width / 2) / tile_size;
ytile_s = (ytile * tile_size - height / 2) / tile_size;
xtile_e = (xtile * tile_size + width / 2) / tile_size;
ytile_e = (ytile * tile_size + height / 2) / tile_size;
[lon_s, lat_s] = getLonLat(xtile_s, ytile_s, zoom);
[lon_e, lat_e] = getLonLat(xtile_e, ytile_e, zoom);
return [lon_s, lat_s, lon_e, lat_e];
}
//make a bbox, 0.001 should be modified based on zoom value
function bbox(lat, lon, zoom) {
return LonLat_to_bbox(lat, lon, zoom);
}
function zoom(satelliteZoom) {
return -1.4436 * Math.log(satelliteZoom) + 28.7;
}
function redirectYouTube(url) {
if (url.host.split('.')[0] === 'studio') {
// Avoid redirecting `studio.youtube.com`
return null;
} else if (url.pathname.match(/iframe_api/)) {
// Redirect requests for YouTube Player API to local files instead
return chrome.runtime.getURL('assets/iframe_api.js');
return browser.runtime.getURL('assets/iframe_api.js');
} else if (url.pathname.match(/www-widgetapi/)) {
// Redirect requests for YouTube Player API to local files instead
return chrome.runtime.getURL('assets/www-widgetapi.js');
return browser.runtime.getURL('assets/www-widgetapi.js');
} else {
// Proxy video through the server
url.searchParams.append('local', true);
@ -156,35 +108,27 @@ function redirectInstagram(url) {
}
}
function redirectGoogleMaps(url, type) {
let query = '';
function redirectGoogleMaps(url) {
// Do not redirect embedded maps
if (url.pathname.includes('/embed')) {
return;
}
let lat = '';
let lon = '';
let zoom = '';
if (url.pathname.match(latLngZoomRegex)) {
[, lat, lon, zoom] = url.pathname.match(latLngZoomRegex);
}
if (type === 'main_frame') {
if (url.pathname.includes('data=')) {
const [mlat, mlon] = url.pathname.match(dataLatLngRegex);
return `${osmInstance}/?mlat=${mlat.replace('!3d', '')}&mlon=${mlon.replace('!4d', '')}#map=${zoom}/${lat}/${lon}`;
} else if (url.search.includes('q=')) {
query = encodeURI(url.searchParams.get('q'));
} else {
query = url.pathname.split('/')[3];
}
if (url.pathname.includes('data=')) {
const [mlat, mlon] = url.pathname.match(dataLatLngRegex);
return `${osmInstance}/?mlat=${mlat.replace('!3d', '')}&mlon=${mlon.replace('!4d', '')}#map=${zoom}/${lat}/${lon}`;
} else {
const query = encodeURI(url.searchParams.get('q')) || url.pathname.split('/')[3];
return `${osmInstance}/search?query=${query}#map=${zoom}/${lat}/${lon}`;
} else if (type === 'sub_frame' && url.pathname.match(latLngZoomRegex)) {
const [mapleft, mapbottom, mapright, maptop] = bbox(Number(lat), Number(lon), zoom(z));
if (url.pathname.includes('data=')) {
const [mlat, mlon] = url.pathname.match(dataLatLngRegex);
return `${osmInstance}/export/embed.html?bbox=${mapleft}%2C${mapbottom}'%2C'${mapright}'%2C'${maptop}'&layer=mapnik&marker=${mlat}%2C${mlon}'`;
}
return `${osmInstance}/export/embed.html?bbox=${mapleft}%2C${mapbottom}'%2C'${mapright}'%2C'${maptop}'&layer=mapnik'`;
}
}
chrome.webRequest.onBeforeRequest.addListener(
browser.webRequest.onBeforeRequest.addListener(
details => {
const url = new URL(details.url);
let redirect;
@ -209,7 +153,7 @@ chrome.webRequest.onBeforeRequest.addListener(
} else if (url.href.match(googleMapsRegex)) {
if (!disableOsm) {
redirect = {
redirectUrl: redirectGoogleMaps(url, details.type)
redirectUrl: redirectGoogleMaps(url)
};
}
}
@ -222,12 +166,7 @@ chrome.webRequest.onBeforeRequest.addListener(
return redirect;
},
{
urls: ["<all_urls>"],
types: [
"main_frame",
"sub_frame",
"script"
]
urls: ["<all_urls>"]
},
['blocking']
);

3
manifest.json
View File

@ -1,6 +1,6 @@
{
"name": "Privacy Redirect",
"description": "Redirects Twitter, YouTube & Instagram requests to privacy friendly alternatives - Nitter, Invidious, & Bibliogram.",
"description": "Redirects Twitter, YouTube, Instagram & Google Maps requests to privacy friendly alternatives.",
"version": "1.1.10",
"manifest_version": 2,
"background": {
@ -22,6 +22,7 @@
"<all_urls>"
],
"browser_action": {
"default_title": "Privacy Redirect",
"default_popup": "pages/popup/popup.html",
"default_icon": {
"16": "images/icon16.png",

6
pages/options/options.js
View File

@ -7,7 +7,9 @@ let disableNitter = document.querySelector('#disable-nitter');
let disableInvidious = document.querySelector('#disable-invidious');
let disableBibliogram = document.querySelector('#disable-bibliogram');
chrome.storage.sync.get(
window.browser = window.browser || window.chrome;
browser.storage.sync.get(
[
'nitterInstance',
'invidiousInstance',
@ -27,7 +29,7 @@ chrome.storage.sync.get(
);
document.querySelector('#save').addEventListener('click', () => {
chrome.storage.sync.set({
browser.storage.sync.set({
nitterInstance: nitterInstance.value && nitterInstance.checkValidity() ? new URL(nitterInstance.value).origin : '',
invidiousInstance: invidiousInstance.value && invidiousInstance.checkValidity() ? new URL(invidiousInstance.value).origin : '',
bibliogramInstance: bibliogramInstance.value && bibliogramInstance.checkValidity() ? new URL(bibliogramInstance.value).origin : '',

22
pages/popup/popup.js
View File

@ -10,7 +10,9 @@ let disableBibliogram = document.querySelector('#disable-bibliogram');
let disableOsm = document.querySelector('#disable-osm');
let version = document.querySelector('#version');
chrome.storage.sync.get(
window.browser = window.browser || window.chrome;
browser.storage.sync.get(
[
'nitterInstance',
'invidiousInstance',
@ -33,7 +35,7 @@ chrome.storage.sync.get(
}
);
version.textContent = chrome.runtime.getManifest().version;
version.textContent = browser.runtime.getManifest().version;
function debounce(func, wait, immediate) {
let timeout;
@ -52,7 +54,7 @@ function debounce(func, wait, immediate) {
let nitterInstanceChange = debounce(() => {
if (nitterInstance.checkValidity()) {
chrome.storage.sync.set({
browser.storage.sync.set({
nitterInstance: nitterInstance.value ? new URL(nitterInstance.value).origin : ''
});
}
@ -61,7 +63,7 @@ nitterInstance.addEventListener('input', nitterInstanceChange);
let invidiousInstanceChange = debounce(() => {
if (invidiousInstance.checkValidity()) {
chrome.storage.sync.set({
browser.storage.sync.set({
invidiousInstance: invidiousInstance.value ? new URL(invidiousInstance.value).origin : ''
});
}
@ -70,7 +72,7 @@ invidiousInstance.addEventListener('input', invidiousInstanceChange);
let bibliogramInstanceChange = debounce(() => {
if (bibliogramInstance.checkValidity()) {
chrome.storage.sync.set({
browser.storage.sync.set({
bibliogramInstance: bibliogramInstance.value ? new URL(bibliogramInstance.value).origin : ''
});
}
@ -79,7 +81,7 @@ bibliogramInstance.addEventListener('input', bibliogramInstanceChange);
let osmInstanceChange = debounce(() => {
if (osmInstance.checkValidity()) {
chrome.storage.sync.set({
browser.storage.sync.set({
osmInstance: osmInstance.value ? new URL(osmInstance.value).origin : ''
});
}
@ -87,17 +89,17 @@ let osmInstanceChange = debounce(() => {
osmInstance.addEventListener('input', osmInstanceChange);
disableNitter.addEventListener('change', event => {
chrome.storage.sync.set({ disableNitter: !event.target.checked });
browser.storage.sync.set({ disableNitter: !event.target.checked });
});
disableInvidious.addEventListener('change', event => {
chrome.storage.sync.set({ disableInvidious: !event.target.checked });
browser.storage.sync.set({ disableInvidious: !event.target.checked });
});
disableBibliogram.addEventListener('change', event => {
chrome.storage.sync.set({ disableBibliogram: !event.target.checked });
browser.storage.sync.set({ disableBibliogram: !event.target.checked });
});
disableOsm.addEventListener('change', event => {
chrome.storage.sync.set({ disableOsm: !event.target.checked });
browser.storage.sync.set({ disableOsm: !event.target.checked });
});