1 files changed, 0 insertions, 575 deletions
diff --git a/src/webex/wxBackend.ts b/src/webex/wxBackend.ts
deleted file mode 100644
index 39fcf899e..000000000
--- a/src/webex/wxBackend.ts
+++ /dev/null
@@ -1,575 +0,0 @@
-/*
- This file is part of TALER
- (C) 2016 GNUnet e.V.
-
- 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/>
- */
-
-/**
- * Messaging for the WebExtensions wallet.  Should contain
- * parts that are specific for WebExtensions, but as little business
- * logic as possible.
- */
-
-/**
- * Imports.
- */
-import { BrowserCryptoWorkerFactory } from "../crypto/workers/cryptoApi";
-import {
-  deleteTalerDatabase,
-  openTalerDatabase,
-  WALLET_DB_MINOR_VERSION,
-} from "../db";
-import { ReturnCoinsRequest, WalletDiagnostics } from "../types/walletTypes";
-import { BrowserHttpLib } from "../util/http";
-import { OpenedPromise, openPromise } from "../util/promiseUtils";
-import { classifyTalerUri, TalerUriType } from "../util/taleruri";
-import { Wallet } from "../wallet";
-import { isFirefox, getPermissionsApi } from "./compat";
-import * as wxApi from "./wxApi";
-import MessageSender = chrome.runtime.MessageSender;
-import { Database } from "../util/query";
-import { extendedPermissions } from "./permissions";
-
-const NeedsWallet = Symbol("NeedsWallet");
-
-/**
- * Currently active wallet instance.  Might be unloaded and
- * re-instantiated when the database is reset.
- */
-let currentWallet: Wallet | undefined;
-
-let currentDatabase: IDBDatabase | undefined;
-
-/**
- * Last version if an outdated DB, if applicable.
- */
-let outdatedDbVersion: number | undefined;
-
-const walletInit: OpenedPromise<void> = openPromise<void>();
-
-const notificationPorts: chrome.runtime.Port[] = [];
-
-async function handleMessage(
-  sender: MessageSender,
-  type: string,
-  detail: any,
-): Promise<any> {
-  function needsWallet(): Wallet {
-    if (!currentWallet) {
-      throw NeedsWallet;
-    }
-    return currentWallet;
-  }
-  switch (type) {
-    case "balances": {
-      return needsWallet().getBalances();
-    }
-    case "dump-db": {
-      const db = needsWallet().db;
-      return db.exportDatabase();
-    }
-    case "import-db": {
-      const db = needsWallet().db;
-      return db.importDatabase(detail.dump);
-    }
-    case "ping": {
-      return Promise.resolve();
-    }
-    case "reset-db": {
-      deleteTalerDatabase(indexedDB);
-      setBadgeText({ text: "" });
-      console.log("reset done");
-      if (!currentWallet) {
-        reinitWallet();
-      }
-      return Promise.resolve({});
-    }
-    case "confirm-pay": {
-      if (typeof detail.proposalId !== "string") {
-        throw Error("proposalId must be string");
-      }
-      return needsWallet().confirmPay(detail.proposalId, detail.sessionId);
-    }
-    case "exchange-info": {
-      if (!detail.baseUrl) {
-        return Promise.resolve({ error: "bad url" });
-      }
-      return needsWallet().updateExchangeFromUrl(detail.baseUrl);
-    }
-    case "get-exchanges": {
-      return needsWallet().getExchangeRecords();
-    }
-    case "get-currencies": {
-      return needsWallet().getCurrencies();
-    }
-    case "update-currency": {
-      return needsWallet().updateCurrency(detail.currencyRecord);
-    }
-    case "get-reserves": {
-      if (typeof detail.exchangeBaseUrl !== "string") {
-        return Promise.reject(Error("exchangeBaseUrl missing"));
-      }
-      return needsWallet().getReserves(detail.exchangeBaseUrl);
-    }
-    case "get-coins": {
-      if (typeof detail.exchangeBaseUrl !== "string") {
-        return Promise.reject(Error("exchangBaseUrl missing"));
-      }
-      return needsWallet().getCoinsForExchange(detail.exchangeBaseUrl);
-    }
-    case "get-denoms": {
-      if (typeof detail.exchangeBaseUrl !== "string") {
-        return Promise.reject(Error("exchangBaseUrl missing"));
-      }
-      return needsWallet().getDenoms(detail.exchangeBaseUrl);
-    }
-    case "refresh-coin": {
-      if (typeof detail.coinPub !== "string") {
-        return Promise.reject(Error("coinPub missing"));
-      }
-      return needsWallet().refresh(detail.coinPub);
-    }
-    case "get-sender-wire-infos": {
-      return needsWallet().getSenderWireInfos();
-    }
-    case "return-coins": {
-      const d = {
-        amount: detail.amount,
-        exchange: detail.exchange,
-        senderWire: detail.senderWire,
-      };
-      const req = ReturnCoinsRequest.checked(d);
-      return needsWallet().returnCoins(req);
-    }
-    case "check-upgrade": {
-      let dbResetRequired = false;
-      if (!currentWallet) {
-        dbResetRequired = true;
-      }
-      const resp: wxApi.UpgradeResponse = {
-        currentDbVersion: WALLET_DB_MINOR_VERSION.toString(),
-        dbResetRequired,
-        oldDbVersion: (outdatedDbVersion || "unknown").toString(),
-      };
-      return resp;
-    }
-    case "get-purchase-details": {
-      const proposalId = detail.proposalId;
-      if (!proposalId) {
-        throw Error("proposalId missing");
-      }
-      if (typeof proposalId !== "string") {
-        throw Error("proposalId must be a string");
-      }
-      return needsWallet().getPurchaseDetails(proposalId);
-    }
-    case "accept-refund":
-      return needsWallet().applyRefund(detail.refundUrl);
-    case "get-tip-status": {
-      return needsWallet().getTipStatus(detail.talerTipUri);
-    }
-    case "accept-tip": {
-      return needsWallet().acceptTip(detail.talerTipUri);
-    }
-    case "abort-failed-payment": {
-      if (!detail.contractTermsHash) {
-        throw Error("contracTermsHash not given");
-      }
-      return needsWallet().abortFailedPayment(detail.contractTermsHash);
-    }
-    case "benchmark-crypto": {
-      if (!detail.repetitions) {
-        throw Error("repetitions not given");
-      }
-      return needsWallet().benchmarkCrypto(detail.repetitions);
-    }
-    case "accept-withdrawal": {
-      return needsWallet().acceptWithdrawal(
-        detail.talerWithdrawUri,
-        detail.selectedExchange,
-      );
-    }
-    case "get-diagnostics": {
-      const manifestData = chrome.runtime.getManifest();
-      const errors: string[] = [];
-      let firefoxIdbProblem = false;
-      let dbOutdated = false;
-      try {
-        await walletInit.promise;
-      } catch (e) {
-        errors.push("Error during wallet initialization: " + e);
-        if (
-          currentDatabase === undefined &&
-          outdatedDbVersion === undefined &&
-          isFirefox()
-        ) {
-          firefoxIdbProblem = true;
-        }
-      }
-      if (!currentWallet) {
-        errors.push("Could not create wallet backend.");
-      }
-      if (!currentDatabase) {
-        errors.push("Could not open database");
-      }
-      if (outdatedDbVersion !== undefined) {
-        errors.push(`Outdated DB version: ${outdatedDbVersion}`);
-        dbOutdated = true;
-      }
-      const diagnostics: WalletDiagnostics = {
-        walletManifestDisplayVersion:
-          manifestData.version_name || "(undefined)",
-        walletManifestVersion: manifestData.version,
-        errors,
-        firefoxIdbProblem,
-        dbOutdated,
-      };
-      return diagnostics;
-    }
-    case "prepare-pay":
-      return needsWallet().preparePayForUri(detail.talerPayUri);
-    case "set-extended-permissions": {
-      const newVal = detail.value;
-      console.log("new extended permissions value", newVal);
-      if (newVal) {
-        setupHeaderListener();
-        return { newValue: true };
-      } else {
-        await new Promise((resolve, reject) => {
-          getPermissionsApi().remove(extendedPermissions, (rem) => {
-            console.log("permissions removed:", rem);
-            resolve();
-          });
-        });
-        return { newVal: false };
-      }
-    }
-    case "get-extended-permissions": {
-      const res = await new Promise((resolve, reject) => {
-        getPermissionsApi().contains(extendedPermissions, (result: boolean) => {
-          resolve(result);
-        });
-      });
-      return { newValue: res };
-    }
-    default:
-      console.error(`Request type ${type} unknown`);
-      console.error(`Request detail was ${detail}`);
-      return {
-        error: {
-          message: `request type ${type} unknown`,
-          requestType: type,
-        },
-      };
-  }
-}
-
-async function dispatch(
-  req: any,
-  sender: any,
-  sendResponse: any,
-): Promise<void> {
-  try {
-    const p = handleMessage(sender, req.type, req.detail);
-    const r = await p;
-    try {
-      sendResponse(r);
-    } catch (e) {
-      // might fail if tab disconnected
-    }
-  } catch (e) {
-    console.log(`exception during wallet handler for '${req.type}'`);
-    console.log("request", req);
-    console.error(e);
-    let stack;
-    try {
-      stack = e.stack.toString();
-    } catch (e) {
-      // might fail
-    }
-    try {
-      sendResponse({
-        error: {
-          message: e.message,
-          stack,
-        },
-      });
-    } catch (e) {
-      console.log(e);
-      // might fail if tab disconnected
-    }
-  }
-}
-
-function getTab(tabId: number): Promise<chrome.tabs.Tab> {
-  return new Promise((resolve, reject) => {
-    chrome.tabs.get(tabId, (tab: chrome.tabs.Tab) => resolve(tab));
-  });
-}
-
-function setBadgeText(options: chrome.browserAction.BadgeTextDetails): void {
-  // not supported by all browsers ...
-  if (chrome && chrome.browserAction && chrome.browserAction.setBadgeText) {
-    chrome.browserAction.setBadgeText(options);
-  } else {
-    console.warn("can't set badge text, not supported", options);
-  }
-}
-
-function waitMs(timeoutMs: number): Promise<void> {
-  return new Promise((resolve, reject) => {
-    const bgPage = chrome.extension.getBackgroundPage();
-    if (!bgPage) {
-      reject("fatal: no background page");
-      return;
-    }
-    bgPage.setTimeout(() => resolve(), timeoutMs);
-  });
-}
-
-function makeSyncWalletRedirect(
-  url: string,
-  tabId: number,
-  oldUrl: string,
-  params?: { [name: string]: string | undefined },
-): Record<string, unknown> {
-  const innerUrl = new URL(chrome.extension.getURL("/" + url));
-  if (params) {
-    for (const key in params) {
-      const p = params[key];
-      if (p) {
-        innerUrl.searchParams.set(key, p);
-      }
-    }
-  }
-  if (isFirefox()) {
-    // Some platforms don't support the sync redirect (yet), so fall back to
-    // async redirect after a timeout.
-    const doit = async (): Promise<void> => {
-      await waitMs(150);
-      const tab = await getTab(tabId);
-      if (tab.url === oldUrl) {
-        chrome.tabs.update(tabId, { url: innerUrl.href });
-      }
-    };
-    doit();
-  }
-  console.log("redirecting to", innerUrl.href);
-  chrome.tabs.update(tabId, { url: innerUrl.href });
-  return { redirectUrl: innerUrl.href };
-}
-
-async function reinitWallet(): Promise<void> {
-  if (currentWallet) {
-    currentWallet.stop();
-    currentWallet = undefined;
-  }
-  currentDatabase = undefined;
-  setBadgeText({ text: "" });
-  try {
-    currentDatabase = await openTalerDatabase(indexedDB, reinitWallet);
-  } catch (e) {
-    console.error("could not open database", e);
-    walletInit.reject(e);
-    return;
-  }
-  const http = new BrowserHttpLib();
-  console.log("setting wallet");
-  const wallet = new Wallet(
-    new Database(currentDatabase),
-    http,
-    new BrowserCryptoWorkerFactory(),
-  );
-  wallet.addNotificationListener((x) => {
-    for (const x of notificationPorts) {
-      try {
-        x.postMessage({ type: "notification" });
-      } catch (e) {
-        console.error(e);
-      }
-    }
-  });
-  wallet.runRetryLoop().catch((e) => {
-    console.log("error during wallet retry loop", e);
-  });
-  // Useful for debugging in the background page.
-  (window as any).talerWallet = wallet;
-  currentWallet = wallet;
-  walletInit.resolve();
-}
-
-try {
-  // 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((details) => {
-    console.log("onInstalled with reason", details.reason);
-    if (details.reason === "install") {
-      const url = chrome.extension.getURL("/welcome.html");
-      chrome.tabs.create({ active: true, url: url });
-    }
-  });
-} catch (e) {
-  console.error(e);
-}
-
-function headerListener(
-  details: chrome.webRequest.WebResponseHeadersDetails,
-): chrome.webRequest.BlockingResponse | undefined {
-  console.log("header listener");
-  if (chrome.runtime.lastError) {
-    console.error(chrome.runtime.lastError);
-    return;
-  }
-  const wallet = currentWallet;
-  if (!wallet) {
-    console.warn("wallet not available while handling header");
-    return;
-  }
-  console.log("in header listener");
-  if (details.statusCode === 402 || details.statusCode === 202) {
-    console.log(`got 402/202 from ${details.url}`);
-    for (const header of details.responseHeaders || []) {
-      if (header.name.toLowerCase() === "taler") {
-        const talerUri = header.value || "";
-        const uriType = classifyTalerUri(talerUri);
-        switch (uriType) {
-          case TalerUriType.TalerWithdraw:
-            return makeSyncWalletRedirect(
-              "withdraw.html",
-              details.tabId,
-              details.url,
-              {
-                talerWithdrawUri: talerUri,
-              },
-            );
-          case TalerUriType.TalerPay:
-            return makeSyncWalletRedirect(
-              "pay.html",
-              details.tabId,
-              details.url,
-              {
-                talerPayUri: talerUri,
-              },
-            );
-          case TalerUriType.TalerTip:
-            return makeSyncWalletRedirect(
-              "tip.html",
-              details.tabId,
-              details.url,
-              {
-                talerTipUri: talerUri,
-              },
-            );
-          case TalerUriType.TalerRefund:
-            return makeSyncWalletRedirect(
-              "refund.html",
-              details.tabId,
-              details.url,
-              {
-                talerRefundUri: talerUri,
-              },
-            );
-          case TalerUriType.TalerNotifyReserve:
-            Promise.resolve().then(() => {
-              const w = currentWallet;
-              if (!w) {
-                return;
-              }
-              w.handleNotifyReserve();
-            });
-            break;
-          default:
-            console.warn(
-              "Response with HTTP 402 has Taler header, but header value is not a taler:// URI.",
-            );
-            break;
-        }
-      }
-    }
-  }
-  return;
-}
-
-function setupHeaderListener(): void {
-  console.log("setting up header listener");
-  // Handlers for catching HTTP requests
-  getPermissionsApi().contains(extendedPermissions, (result: boolean) => {
-    if (
-      chrome.webRequest.onHeadersReceived &&
-      chrome.webRequest.onHeadersReceived.hasListener(headerListener)
-    ) {
-      chrome.webRequest.onHeadersReceived.removeListener(headerListener);
-    }
-    if (result) {
-      console.log("actually adding listener");
-      chrome.webRequest.onHeadersReceived.addListener(
-        headerListener,
-        { urls: ["<all_urls>"] },
-        ["responseHeaders", "blocking"],
-      );
-    }
-    chrome.webRequest.handlerBehaviorChanged(() => {
-      if (chrome.runtime.lastError) {
-        console.error(chrome.runtime.lastError);
-      }
-    });
-  });
-}
-
-/**
- * Main function to run for the WebExtension backend.
- *
- * Sets up all event handlers and other machinery.
- */
-export async function wxMain(): Promise<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) => {
-    console.log("update available:", details);
-    chrome.runtime.reload();
-  });
-  reinitWallet();
-
-  // Handlers for messages coming directly from the content
-  // script on the page
-  chrome.runtime.onMessage.addListener((req, sender, sendResponse) => {
-    dispatch(req, sender, sendResponse);
-    return true;
-  });
-
-  chrome.runtime.onConnect.addListener((port) => {
-    notificationPorts.push(port);
-    port.onDisconnect.addListener((discoPort) => {
-      const idx = notificationPorts.indexOf(discoPort);
-      if (idx >= 0) {
-        notificationPorts.splice(idx, 1);
-      }
-    });
-  });
-
-  try {
-    setupHeaderListener();
-  } catch (e) {
-    console.log(e);
-  }
-
-  // On platforms that support it, also listen to external
-  // modification of permissions.
-  getPermissionsApi().addPermissionsListener((perm) => {
-    if (chrome.runtime.lastError) {
-      console.error(chrome.runtime.lastError);
-      return;
-    }
-    setupHeaderListener();
-  });
-}