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|
/* eslint-disable @typescript-eslint/no-non-null-assertion */
/*
This file is part of TALER
(C) 2017 INRIA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER 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
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
import {
classifyTalerUri,
CoreApiResponse,
Logger,
TalerUriType,
} from "@gnu-taler/taler-util";
import {
CrossBrowserPermissionsApi,
MessageFromBackend,
Permissions,
PlatformAPI,
} from "./api.js";
const api: PlatformAPI = {
isFirefox,
findTalerUriInActiveTab,
getPermissionsApi,
getWalletVersion,
listenToWalletBackground,
notifyWhenAppIsReady,
openWalletPage,
openWalletPageFromPopup,
openWalletURIFromPopup,
redirectTabToWalletPage,
registerAllIncomingConnections,
registerOnInstalled,
listenToAllChannels,
registerReloadOnNewVersion,
registerTalerHeaderListener,
sendMessageToAllChannels,
sendMessageToWalletBackground,
useServiceWorkerAsBackgroundProcess,
containsTalerHeaderListener,
keepAlive,
};
export default api;
const logger = new Logger("chrome.ts");
function keepAlive(callback: any): void {
if (extensionIsManifestV3()) {
chrome.alarms.create("wallet-worker", { periodInMinutes: 1 });
chrome.alarms.onAlarm.addListener((a) => {
logger.trace(`kee p alive alarm: ${a.name}`);
// callback()
});
// } else {
}
callback();
}
function isFirefox(): boolean {
return false;
}
const hostPermissions = {
permissions: ["webRequest"],
origins: ["http://*/*", "https://*/*"],
};
export function containsHostPermissions(): Promise<boolean> {
return new Promise((res, rej) => {
chrome.permissions.contains(hostPermissions, (resp) => {
const le = chrome.runtime.lastError?.message;
if (le) {
rej(le);
}
res(resp);
});
});
}
export async function requestHostPermissions(): Promise<boolean> {
return new Promise((res, rej) => {
chrome.permissions.request(hostPermissions, (resp) => {
const le = chrome.runtime.lastError?.message;
if (le) {
rej(le);
}
res(resp);
});
});
}
type HeaderListenerFunc = (
details: chrome.webRequest.WebResponseHeadersDetails,
) => void;
let currentHeaderListener: HeaderListenerFunc | undefined = undefined;
export function containsTalerHeaderListener(): boolean {
return currentHeaderListener !== undefined;
}
export async function removeHostPermissions(): Promise<boolean> {
//if there is a handler already, remove it
if (
"webRequest" in chrome &&
"onHeadersReceived" in chrome.webRequest &&
currentHeaderListener &&
chrome.webRequest.onHeadersReceived.hasListener(currentHeaderListener)
) {
chrome.webRequest.onHeadersReceived.removeListener(currentHeaderListener);
}
currentHeaderListener = undefined;
//notify the browser about this change, this operation is expensive
if ("webRequest" in chrome) {
chrome.webRequest.handlerBehaviorChanged(() => {
if (chrome.runtime.lastError) {
logger.error(JSON.stringify(chrome.runtime.lastError));
}
});
}
if (extensionIsManifestV3()) {
// Trying to remove host permissions with manifest >= v3 throws an error
return true;
}
return new Promise((res, rej) => {
chrome.permissions.remove(hostPermissions, (resp) => {
const le = chrome.runtime.lastError?.message;
if (le) {
rej(le);
}
res(resp);
});
});
}
function addPermissionsListener(
callback: (p: Permissions, lastError?: string) => void,
): void {
chrome.permissions.onAdded.addListener((perm: Permissions) => {
const lastError = chrome.runtime.lastError?.message;
callback(perm, lastError);
});
}
function getPermissionsApi(): CrossBrowserPermissionsApi {
return {
addPermissionsListener,
containsHostPermissions,
requestHostPermissions,
removeHostPermissions,
};
}
/**
*
* @param callback function to be called
*/
function notifyWhenAppIsReady(callback: () => void): void {
if (extensionIsManifestV3()) {
callback();
} else {
window.addEventListener("load", callback);
}
}
function openWalletURIFromPopup(talerUri: string): void {
const uriType = classifyTalerUri(talerUri);
let url: string | undefined = undefined;
switch (uriType) {
case TalerUriType.TalerWithdraw:
url = chrome.runtime.getURL(
`static/wallet.html#/cta/withdraw?talerWithdrawUri=${talerUri}`,
);
break;
case TalerUriType.TalerPay:
url = chrome.runtime.getURL(
`static/wallet.html#/cta/pay?talerPayUri=${talerUri}`,
);
break;
case TalerUriType.TalerTip:
url = chrome.runtime.getURL(
`static/wallet.html#/cta/tip?talerTipUri=${talerUri}`,
);
break;
case TalerUriType.TalerRefund:
url = chrome.runtime.getURL(
`static/wallet.html#/cta/refund?talerRefundUri=${talerUri}`,
);
break;
default:
logger.warn(
"Response with HTTP 402 has Taler header, but header value is not a taler:// URI.",
);
return;
}
chrome.tabs.create({ active: true, url }, () => {
window.close();
});
}
function openWalletPage(page: string): void {
const url = chrome.runtime.getURL(`/static/wallet.html#${page}`);
chrome.tabs.create({ active: true, url });
}
function openWalletPageFromPopup(page: string): void {
const url = chrome.runtime.getURL(`/static/wallet.html#${page}`);
chrome.tabs.create({ active: true, url }, () => {
window.close();
});
}
async function sendMessageToWalletBackground(
operation: string,
payload: any,
): Promise<any> {
return new Promise<any>((resolve, reject) => {
logger.trace("send operation to the wallet background", operation);
chrome.runtime.sendMessage({ operation, payload, id: "(none)" }, (resp) => {
if (chrome.runtime.lastError) {
reject(chrome.runtime.lastError.message);
}
resolve(resp);
// return true to keep the channel open
return true;
});
});
}
let notificationPort: chrome.runtime.Port | undefined;
function listenToWalletBackground(listener: (m: any) => void): () => void {
if (notificationPort === undefined) {
notificationPort = chrome.runtime.connect({ name: "notifications" });
}
notificationPort.onMessage.addListener(listener);
function removeListener(): void {
if (notificationPort !== undefined) {
notificationPort.onMessage.removeListener(listener);
}
}
return removeListener;
}
const allPorts: chrome.runtime.Port[] = [];
function sendMessageToAllChannels(message: MessageFromBackend): void {
for (const notif of allPorts) {
// const message: MessageFromBackend = { type: msg.type };
try {
notif.postMessage(message);
} catch (e) {
logger.error("error posting a message", e);
}
}
}
function registerAllIncomingConnections(): void {
chrome.runtime.onConnect.addListener((port) => {
allPorts.push(port);
port.onDisconnect.addListener((discoPort) => {
const idx = allPorts.indexOf(discoPort);
if (idx >= 0) {
allPorts.splice(idx, 1);
}
});
});
}
function listenToAllChannels(
cb: (
message: any,
sender: any,
callback: (r: CoreApiResponse) => void,
) => void,
): void {
chrome.runtime.onMessage.addListener((m, s, c) => {
cb(m, s, c);
// keep the connection open
return true;
});
}
function registerReloadOnNewVersion(): void {
// Explicitly unload the extension page as soon as an update is available,
// so the update gets installed as soon as possible.
chrome.runtime.onUpdateAvailable.addListener((details) => {
logger.info("update available:", details);
chrome.runtime.reload();
});
}
function redirectTabToWalletPage(tabId: number, page: string): void {
const url = chrome.runtime.getURL(`/static/wallet.html#${page}`);
logger.trace("redirecting tabId: ", tabId, " to: ", url);
chrome.tabs.update(tabId, { url });
}
interface WalletVersion {
version_name?: string | undefined;
version: string;
}
function getWalletVersion(): WalletVersion {
const manifestData = chrome.runtime.getManifest();
return manifestData;
}
function registerTalerHeaderListener(
callback: (tabId: number, url: string) => void,
): void {
logger.trace("setting up header listener");
function headerListener(
details: chrome.webRequest.WebResponseHeadersDetails,
): void {
if (chrome.runtime.lastError) {
logger.error(JSON.stringify(chrome.runtime.lastError));
return;
}
if (
details.statusCode === 402 ||
details.statusCode === 202 ||
details.statusCode === 200
) {
const values = (details.responseHeaders || [])
.filter((h) => h.name.toLowerCase() === "taler")
.map((h) => h.value)
.filter((value): value is string => !!value);
if (values.length > 0) {
callback(details.tabId, values[0]);
}
}
return;
}
const prevHeaderListener = currentHeaderListener;
getPermissionsApi()
.containsHostPermissions()
.then((result) => {
//if there is a handler already, remove it
if (
prevHeaderListener &&
chrome?.webRequest?.onHeadersReceived?.hasListener(prevHeaderListener)
) {
chrome.webRequest.onHeadersReceived.removeListener(prevHeaderListener);
}
//if the result was positive, add the headerListener
if (result) {
const listener: chrome.webRequest.WebResponseHeadersEvent | undefined =
chrome?.webRequest?.onHeadersReceived;
if (listener) {
listener.addListener(headerListener, { urls: ["<all_urls>"] }, [
"responseHeaders",
]);
currentHeaderListener = headerListener;
}
}
//notify the browser about this change, this operation is expensive
chrome?.webRequest?.handlerBehaviorChanged(() => {
if (chrome.runtime.lastError) {
logger.error(JSON.stringify(chrome.runtime.lastError));
}
});
});
}
const alertIcons = {
"16": "/static/img/taler-alert-16.png",
"19": "/static/img/taler-alert-19.png",
"32": "/static/img/taler-alert-32.png",
"38": "/static/img/taler-alert-38.png",
"48": "/static/img/taler-alert-48.png",
"64": "/static/img/taler-alert-64.png",
"128": "/static/img/taler-alert-128.png",
"256": "/static/img/taler-alert-256.png",
"512": "/static/img/taler-alert-512.png",
};
const normalIcons = {
"16": "/static/img/taler-logo-16.png",
"19": "/static/img/taler-logo-19.png",
"32": "/static/img/taler-logo-32.png",
"38": "/static/img/taler-logo-38.png",
"48": "/static/img/taler-logo-48.png",
"64": "/static/img/taler-logo-64.png",
"128": "/static/img/taler-logo-128.png",
"256": "/static/img/taler-logo-256.png",
"512": "/static/img/taler-logo-512.png",
};
function setNormalIcon(): void {
if (extensionIsManifestV3()) {
chrome.action.setIcon({ path: normalIcons });
} else {
chrome.browserAction.setIcon({ path: normalIcons });
}
}
function setAlertedIcon(): void {
if (extensionIsManifestV3()) {
chrome.action.setIcon({ path: alertIcons });
} else {
chrome.browserAction.setIcon({ path: alertIcons });
}
}
interface OffscreenCanvasRenderingContext2D
extends CanvasState,
CanvasTransform,
CanvasCompositing,
CanvasImageSmoothing,
CanvasFillStrokeStyles,
CanvasShadowStyles,
CanvasFilters,
CanvasRect,
CanvasDrawPath,
CanvasUserInterface,
CanvasText,
CanvasDrawImage,
CanvasImageData,
CanvasPathDrawingStyles,
CanvasTextDrawingStyles,
CanvasPath {
readonly canvas: OffscreenCanvas;
}
declare const OffscreenCanvasRenderingContext2D: {
prototype: OffscreenCanvasRenderingContext2D;
new (): OffscreenCanvasRenderingContext2D;
};
interface OffscreenCanvas extends EventTarget {
width: number;
height: number;
getContext(
contextId: "2d",
contextAttributes?: CanvasRenderingContext2DSettings,
): OffscreenCanvasRenderingContext2D | null;
}
declare const OffscreenCanvas: {
prototype: OffscreenCanvas;
new (width: number, height: number): OffscreenCanvas;
};
function createCanvas(size: number): OffscreenCanvas {
if (extensionIsManifestV3()) {
return new OffscreenCanvas(size, size);
} else {
const c = document.createElement("canvas");
c.height = size;
c.width = size;
return c;
}
}
async function createImage(size: number, file: string): Promise<ImageData> {
const r = await fetch(file);
const b = await r.blob();
const image = await createImageBitmap(b);
const canvas = createCanvas(size);
const canvasContext = canvas.getContext("2d")!;
canvasContext.clearRect(0, 0, canvas.width, canvas.height);
canvasContext.drawImage(image, 0, 0, canvas.width, canvas.height);
const imageData = canvasContext.getImageData(
0,
0,
canvas.width,
canvas.height,
);
return imageData;
}
async function registerIconChangeOnTalerContent(): Promise<void> {
const imgs = await Promise.all(
Object.entries(alertIcons).map(([key, value]) =>
createImage(parseInt(key, 10), value),
),
);
const imageData = imgs.reduce(
(prev, cur) => ({ ...prev, [cur.width]: cur }),
{} as { [size: string]: ImageData },
);
if (chrome.declarativeContent) {
// using declarative content does not need host permission
// and is faster
const secureTalerUrlLookup = {
conditions: [
new chrome.declarativeContent.PageStateMatcher({
css: ["a[href^='taler://'"],
}),
],
actions: [new chrome.declarativeContent.SetIcon({ imageData })],
};
const inSecureTalerUrlLookup = {
conditions: [
new chrome.declarativeContent.PageStateMatcher({
css: ["a[href^='taler+http://'"],
}),
],
actions: [new chrome.declarativeContent.SetIcon({ imageData })],
};
chrome.declarativeContent.onPageChanged.removeRules(undefined, function () {
chrome.declarativeContent.onPageChanged.addRules([
secureTalerUrlLookup,
inSecureTalerUrlLookup,
]);
});
return;
}
//this browser doesn't have declarativeContent
//we need host_permission and we will check the content for changing the icon
chrome.tabs.onUpdated.addListener(
async (tabId, info: chrome.tabs.TabChangeInfo) => {
if (tabId < 0) return;
logger.info("tab updated", tabId, info);
if (info.status !== "complete") return;
const uri = await findTalerUriInTab(tabId);
if (uri) {
setAlertedIcon();
} else {
setNormalIcon();
}
},
);
chrome.tabs.onActivated.addListener(
async ({ tabId }: chrome.tabs.TabActiveInfo) => {
if (tabId < 0) return;
const uri = await findTalerUriInTab(tabId);
if (uri) {
setAlertedIcon();
} else {
setNormalIcon();
}
},
);
}
function registerOnInstalled(callback: () => void): void {
// This needs to be outside of main, as Firefox won't fire the event if
// the listener isn't created synchronously on loading the backend.
chrome.runtime.onInstalled.addListener(async (details) => {
logger.info(`onInstalled with reason: "${details.reason}"`);
if (details.reason === chrome.runtime.OnInstalledReason.INSTALL) {
callback();
}
registerIconChangeOnTalerContent();
});
}
function extensionIsManifestV3(): boolean {
return chrome.runtime.getManifest().manifest_version === 3;
}
function useServiceWorkerAsBackgroundProcess(): boolean {
return extensionIsManifestV3();
}
function searchForTalerLinks(): string | undefined {
let found;
found = document.querySelector("a[href^='taler://'");
if (found) return found.toString();
found = document.querySelector("a[href^='taler+http://'");
if (found) return found.toString();
return undefined;
}
async function getCurrentTab(): Promise<chrome.tabs.Tab> {
const queryOptions = { active: true, currentWindow: true };
return new Promise<chrome.tabs.Tab>((resolve, reject) => {
chrome.tabs.query(queryOptions, (tabs) => {
if (chrome.runtime.lastError) {
reject(chrome.runtime.lastError);
return;
}
resolve(tabs[0]);
});
});
}
async function findTalerUriInTab(tabId: number): Promise<string | undefined> {
if (extensionIsManifestV3()) {
// manifest v3
try {
const res = await chrome.scripting.executeScript({
target: { tabId, allFrames: true },
func: searchForTalerLinks,
args: [],
});
return res[0].result;
} catch (e) {
return;
}
} else {
return new Promise((resolve, reject) => {
//manifest v2
chrome.tabs.executeScript(
tabId,
{
code: `
(() => {
let x = document.querySelector("a[href^='taler://'") || document.querySelector("a[href^='taler+http://'");
return x ? x.href.toString() : null;
})();
`,
allFrames: false,
},
(result) => {
if (chrome.runtime.lastError) {
logger.error(JSON.stringify(chrome.runtime.lastError));
resolve(undefined);
return;
}
resolve(result[0]);
},
);
});
}
}
async function findTalerUriInActiveTab(): Promise<string | undefined> {
const tab = await getCurrentTab();
if (!tab || tab.id === undefined) return;
return findTalerUriInTab(tab.id);
}
|