move webex specific things in their own directory

1 files changed, 0 insertions, 718 deletions

diff --git a/src/wxBackend.ts b/src/wxBackend.ts
deleted file mode 100644
index a9a208dcd..000000000
--- a/src/wxBackend.ts
+++ /dev/null
@@ -1,718 +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 { Checkable } from "./checkable";
-import { ChromeBadge } from "./chromeBadge";
-import { BrowserHttpLib } from "./http";
-import * as logging from "./logging";
-import {
-  Index,
-  Store,
-} from "./query";
-import {
-  AmountJson,
-  Contract,
-  Notifier,
-} from "./types";
-import URI = require("urijs");
-import {
-  Badge,
-  ConfirmReserveRequest,
-  CreateReserveRequest,
-  OfferRecord,
-  Stores,
-  Wallet,
-} from "./wallet";
-import Port = chrome.runtime.Port;
-import MessageSender = chrome.runtime.MessageSender;
-
-
-const DB_NAME = "taler";
-
-/**
- * Current database version, should be incremented
- * each time we do incompatible schema changes on the database.
- * In the future we might consider adding migration functions for
- * each version increment.
- */
-const DB_VERSION = 17;
-
-type Handler = (detail: any, sender: MessageSender) => Promise<any>;
-
-function makeHandlers(db: IDBDatabase,
-                      wallet: Wallet): { [msg: string]: Handler } {
-  return {
-    ["balances"]: (detail, sender) => {
-      return wallet.getBalances();
-    },
-    ["dump-db"]: (detail, sender) => {
-      return exportDb(db);
-    },
-    ["import-db"]: (detail, sender) => {
-      return importDb(db, detail.dump);
-    },
-    ["get-tab-cookie"]: (detail, sender) => {
-      if (!sender || !sender.tab || !sender.tab.id) {
-        return Promise.resolve();
-      }
-      const id: number = sender.tab.id;
-      const info: any = paymentRequestCookies[id] as any;
-      delete paymentRequestCookies[id];
-      return Promise.resolve(info);
-    },
-    ["ping"]: (detail, sender) => {
-      return Promise.resolve();
-    },
-    ["reset"]: (detail, sender) => {
-      if (db) {
-        const tx = db.transaction(Array.from(db.objectStoreNames), "readwrite");
-        // tslint:disable-next-line:prefer-for-of
-        for (let i = 0; i < db.objectStoreNames.length; i++) {
-          tx.objectStore(db.objectStoreNames[i]).clear();
-        }
-      }
-      deleteDb();
-
-      chrome.browserAction.setBadgeText({ text: "" });
-      console.log("reset done");
-      // Response is synchronous
-      return Promise.resolve({});
-    },
-    ["create-reserve"]: (detail, sender) => {
-      const d = {
-        amount: detail.amount,
-        exchange: detail.exchange,
-      };
-      const req = CreateReserveRequest.checked(d);
-      return wallet.createReserve(req);
-    },
-    ["confirm-reserve"]: (detail, sender) => {
-      // TODO: make it a checkable
-      const d = {
-        reservePub: detail.reservePub,
-      };
-      const req = ConfirmReserveRequest.checked(d);
-      return wallet.confirmReserve(req);
-    },
-    ["generate-nonce"]: (detail, sender) => {
-      return wallet.generateNonce();
-    },
-    ["confirm-pay"]: (detail, sender) => {
-      let offer: OfferRecord;
-      try {
-        offer = OfferRecord.checked(detail.offer);
-      } catch (e) {
-        if (e instanceof Checkable.SchemaError) {
-          console.error("schema error:", e.message);
-          return Promise.resolve({
-            detail,
-            error: "invalid contract",
-            hint: e.message,
-          });
-        } else {
-          throw e;
-        }
-      }
-
-      return wallet.confirmPay(offer);
-    },
-    ["check-pay"]: (detail, sender) => {
-      let offer: OfferRecord;
-      try {
-        offer = OfferRecord.checked(detail.offer);
-      } catch (e) {
-        if (e instanceof Checkable.SchemaError) {
-          console.error("schema error:", e.message);
-          return Promise.resolve({
-            detail,
-            error: "invalid contract",
-            hint: e.message,
-          });
-        } else {
-          throw e;
-        }
-      }
-      return wallet.checkPay(offer);
-    },
-    ["query-payment"]: (detail: any, sender: MessageSender) => {
-      if (sender.tab && sender.tab.id) {
-        rateLimitCache[sender.tab.id]++;
-        if (rateLimitCache[sender.tab.id] > 10) {
-          console.warn("rate limit for query-payment exceeded");
-          const msg = {
-            error: "rate limit exceeded for query-payment",
-            hint: "Check for redirect loops",
-            rateLimitExceeded: true,
-          };
-          return Promise.resolve(msg);
-        }
-      }
-      return wallet.queryPayment(detail.url);
-    },
-    ["exchange-info"]: (detail) => {
-      if (!detail.baseUrl) {
-        return Promise.resolve({ error: "bad url" });
-      }
-      return wallet.updateExchangeFromUrl(detail.baseUrl);
-    },
-    ["currency-info"]: (detail) => {
-      if (!detail.name) {
-        return Promise.resolve({ error: "name missing" });
-      }
-      return wallet.getCurrencyRecord(detail.name);
-    },
-    ["hash-contract"]: (detail) => {
-      if (!detail.contract) {
-        return Promise.resolve({ error: "contract missing" });
-      }
-      return wallet.hashContract(detail.contract).then((hash) => {
-        return { hash };
-      });
-    },
-    ["put-history-entry"]: (detail: any) => {
-      if (!detail.historyEntry) {
-        return Promise.resolve({ error: "historyEntry missing" });
-      }
-      return wallet.putHistory(detail.historyEntry);
-    },
-    ["save-offer"]: (detail: any) => {
-      const offer = detail.offer;
-      if (!offer) {
-        return Promise.resolve({ error: "offer missing" });
-      }
-      console.log("handling safe-offer", detail);
-      // FIXME:  fully migrate to new terminology
-      const checkedOffer = OfferRecord.checked(offer);
-      return wallet.saveOffer(checkedOffer);
-    },
-    ["reserve-creation-info"]: (detail, sender) => {
-      if (!detail.baseUrl || typeof detail.baseUrl !== "string") {
-        return Promise.resolve({ error: "bad url" });
-      }
-      const amount = AmountJson.checked(detail.amount);
-      return wallet.getReserveCreationInfo(detail.baseUrl, amount);
-    },
-    ["get-history"]: (detail, sender) => {
-      // TODO: limit history length
-      return wallet.getHistory();
-    },
-    ["get-offer"]: (detail, sender) => {
-      return wallet.getOffer(detail.offerId);
-    },
-    ["get-exchanges"]: (detail, sender) => {
-      return wallet.getExchanges();
-    },
-    ["get-currencies"]: (detail, sender) => {
-      return wallet.getCurrencies();
-    },
-    ["update-currency"]: (detail, sender) => {
-      return wallet.updateCurrency(detail.currencyRecord);
-    },
-    ["get-reserves"]: (detail, sender) => {
-      if (typeof detail.exchangeBaseUrl !== "string") {
-        return Promise.reject(Error("exchangeBaseUrl missing"));
-      }
-      return wallet.getReserves(detail.exchangeBaseUrl);
-    },
-    ["get-payback-reserves"]: (detail, sender) => {
-      return wallet.getPaybackReserves();
-    },
-    ["withdraw-payback-reserve"]: (detail, sender) => {
-      if (typeof detail.reservePub !== "string") {
-        return Promise.reject(Error("reservePub missing"));
-      }
-      return wallet.withdrawPaybackReserve(detail.reservePub);
-    },
-    ["get-coins"]: (detail, sender) => {
-      if (typeof detail.exchangeBaseUrl !== "string") {
-        return Promise.reject(Error("exchangBaseUrl missing"));
-      }
-      return wallet.getCoins(detail.exchangeBaseUrl);
-    },
-    ["get-precoins"]: (detail, sender) => {
-      if (typeof detail.exchangeBaseUrl !== "string") {
-        return Promise.reject(Error("exchangBaseUrl missing"));
-      }
-      return wallet.getPreCoins(detail.exchangeBaseUrl);
-    },
-    ["get-denoms"]: (detail, sender) => {
-      if (typeof detail.exchangeBaseUrl !== "string") {
-        return Promise.reject(Error("exchangBaseUrl missing"));
-      }
-      return wallet.getDenoms(detail.exchangeBaseUrl);
-    },
-    ["refresh-coin"]: (detail, sender) => {
-      if (typeof detail.coinPub !== "string") {
-        return Promise.reject(Error("coinPub missing"));
-      }
-      return wallet.refresh(detail.coinPub);
-    },
-    ["payback-coin"]: (detail, sender) => {
-      if (typeof detail.coinPub !== "string") {
-        return Promise.reject(Error("coinPub missing"));
-      }
-      return wallet.payback(detail.coinPub);
-    },
-    ["payment-failed"]: (detail, sender) => {
-      // For now we just update exchanges (maybe the exchange did something
-      // wrong and the keys were messed up).
-      // FIXME: in the future we should look at what actually went wrong.
-      console.error("payment reported as failed");
-      wallet.updateExchanges();
-      return Promise.resolve();
-    },
-    ["payment-succeeded"]: (detail, sender) => {
-      const contractHash = detail.contractHash;
-      const merchantSig = detail.merchantSig;
-      if (!contractHash) {
-        return Promise.reject(Error("contractHash missing"));
-      }
-      if (!merchantSig) {
-        return Promise.reject(Error("merchantSig missing"));
-      }
-      return wallet.paymentSucceeded(contractHash, merchantSig);
-    },
-  };
-}
-
-
-async function dispatch(handlers: any, req: any, sender: any, sendResponse: any): Promise<void> {
-  if (!(req.type in handlers)) {
-    console.error(`Request type ${JSON.stringify(req)} unknown, req ${req.type}`);
-    try {
-      sendResponse({ error: "request unknown" });
-    } catch (e) {
-      // might fail if tab disconnected
-    }
-  }
-
-  try {
-    const p = handlers[req.type](req.detail, sender);
-    const r = await p;
-    try {
-      sendResponse(r);
-    } catch (e) {
-      // might fail if tab disconnected
-    }
-  } catch (e) {
-    console.log(`exception during wallet handler for '${req.type}'`);
-    console.log("request", req);
-    console.error(e);
-    let stack;
-    try {
-      stack = e.stack.toString();
-    } catch (e) {
-      // might fail
-    }
-    try {
-      sendResponse({
-        error: "exception",
-        hint: e.message,
-        stack,
-      });
-    } catch (e) {
-      console.log(e);
-      // might fail if tab disconnected
-    }
-  }
-}
-
-
-class ChromeNotifier implements Notifier {
-  private ports: Port[] = [];
-
-  constructor() {
-    chrome.runtime.onConnect.addListener((port) => {
-      console.log("got connect!");
-      this.ports.push(port);
-      port.onDisconnect.addListener(() => {
-        const i = this.ports.indexOf(port);
-        if (i >= 0) {
-          this.ports.splice(i, 1);
-        } else {
-          console.error("port already removed");
-        }
-      });
-    });
-  }
-
-  notify() {
-    for (const p of this.ports) {
-      p.postMessage({ notify: true });
-    }
-  }
-}
-
-
-/**
- * Mapping from tab ID to payment information (if any).
- */
-const paymentRequestCookies: { [n: number]: any } = {};
-
-
-/**
- * Handle a HTTP response that has the "402 Payment Required" status.
- * In this callback we don't have access to the body, and must communicate via
- * shared state with the content script that will later be run later
- * in this tab.
- */
-function handleHttpPayment(headerList: chrome.webRequest.HttpHeader[], url: string, tabId: number): any {
-  const headers: { [s: string]: string } = {};
-  for (const kv of headerList) {
-    if (kv.value) {
-      headers[kv.name.toLowerCase()] = kv.value;
-    }
-  }
-
-  const fields = {
-    contract_query: headers["x-taler-contract-query"],
-    contract_url: headers["x-taler-contract-url"],
-    offer_url: headers["x-taler-offer-url"],
-  };
-
-  const talerHeaderFound = Object.keys(fields).filter((x: any) => (fields as any)[x]).length !== 0;
-
-  if (!talerHeaderFound) {
-    // looks like it's not a taler request, it might be
-    // for a different payment system (or the shop is buggy)
-    console.log("ignoring non-taler 402 response");
-    return;
-  }
-
-  const payDetail = {
-    contract_url: fields.contract_url,
-    offer_url: fields.offer_url,
-  };
-
-  console.log("got pay detail", payDetail);
-
-  // This cookie will be read by the injected content script
-  // in the tab that displays the page.
-  paymentRequestCookies[tabId] = {
-    payDetail,
-    type: "pay",
-  };
-}
-
-
-function handleBankRequest(wallet: Wallet, headerList: chrome.webRequest.HttpHeader[],
-                           url: string, tabId: number): any {
-  const headers: { [s: string]: string } = {};
-  for (const kv of headerList) {
-    if (kv.value) {
-      headers[kv.name.toLowerCase()] = kv.value;
-    }
-  }
-
-  const reservePub = headers["x-taler-reserve-pub"];
-  if (reservePub !== undefined) {
-    console.log(`confirming reserve ${reservePub} via 201`);
-    wallet.confirmReserve({reservePub});
-    return;
-  }
-
-  const amount = headers["x-taler-amount"];
-  if (amount) {
-    const callbackUrl = headers["x-taler-callback-url"];
-    if (!callbackUrl) {
-      console.log("202 not understood (X-Taler-Callback-Url missing)");
-      return;
-    }
-    let amountParsed;
-    try {
-      amountParsed = JSON.parse(amount);
-    } catch (e) {
-      const uri = new URI(chrome.extension.getURL("/src/pages/error.html"));
-      const p = {
-        message: `Can't parse amount ("${amount}"): ${e.message}`,
-      };
-      const redirectUrl = uri.query(p).href();
-      // FIXME: use direct redirect when https://bugzilla.mozilla.org/show_bug.cgi?id=707624 is fixed
-      chrome.tabs.update(tabId, {url: redirectUrl});
-      return;
-    }
-    const wtTypes = headers["x-taler-wt-types"];
-    if (!wtTypes) {
-      console.log("202 not understood (X-Taler-Wt-Types missing)");
-      return;
-    }
-    const params = {
-      amount,
-      bank_url: url,
-      callback_url: new URI(callbackUrl) .absoluteTo(url),
-      suggested_exchange_url: headers["x-taler-suggested-exchange"],
-      wt_types: wtTypes,
-    };
-    const uri = new URI(chrome.extension.getURL("/src/pages/confirm-create-reserve.html"));
-    const redirectUrl = uri.query(params).href();
-    console.log("redirecting to", redirectUrl);
-    // FIXME: use direct redirect when https://bugzilla.mozilla.org/show_bug.cgi?id=707624 is fixed
-    chrome.tabs.update(tabId, {url: redirectUrl});
-    return;
-  }
-  // no known headers found, not a taler request ...
-}
-
-
-// Rate limit cache for executePayment operations, to break redirect loops
-let rateLimitCache: { [n: number]: number } = {};
-
-function clearRateLimitCache() {
-  rateLimitCache = {};
-}
-
-/**
- * Main function to run for the WebExtension backend.
- *
- * Sets up all event handlers and other machinery.
- */
-export async function wxMain() {
-  window.onerror = (m, source, lineno, colno, error) => {
-    logging.record("error", m + error, undefined, source || "(unknown)", lineno || 0, colno || 0);
-  };
-
-  chrome.browserAction.setBadgeText({ text: "" });
-  const badge = new ChromeBadge();
-
-  chrome.tabs.query({}, (tabs) => {
-    for (const tab of tabs) {
-      if (!tab.url || !tab.id) {
-        return;
-      }
-      const uri = new URI(tab.url);
-      if (uri.protocol() === "http" || uri.protocol() === "https") {
-        console.log("injecting into existing tab", tab.id);
-        chrome.tabs.executeScript(tab.id, { file: "/dist/contentScript-bundle.js" });
-        const code = `
-          if (("taler" in window) || document.documentElement.getAttribute("data-taler-nojs")) {
-            document.dispatchEvent(new Event("taler-probe-result"));
-          }
-        `;
-        chrome.tabs.executeScript(tab.id, { code, runAt: "document_idle" });
-      }
-    }
-  });
-
-  const tabTimers: {[n: number]: number[]} = {};
-
-  chrome.tabs.onRemoved.addListener((tabId, changeInfo) => {
-    const tt = tabTimers[tabId] || [];
-    for (const t of tt) {
-      chrome.extension.getBackgroundPage().clearTimeout(t);
-    }
-  });
-  chrome.tabs.onUpdated.addListener((tabId, changeInfo) => {
-    if (changeInfo.status !== "complete") {
-      return;
-    }
-    const timers: number[] = [];
-
-    const addRun = (dt: number) => {
-      const id = chrome.extension.getBackgroundPage().setTimeout(run, dt);
-      timers.push(id);
-    };
-
-    const run = () => {
-      timers.shift();
-      chrome.tabs.get(tabId, (tab) => {
-        if (chrome.runtime.lastError) {
-          return;
-        }
-        if (!tab.url || !tab.id) {
-          return;
-        }
-        const uri = new URI(tab.url);
-        if (!(uri.protocol() === "http" || uri.protocol() === "https")) {
-          return;
-        }
-        const code = `
-          if (("taler" in window) || document.documentElement.getAttribute("data-taler-nojs")) {
-            document.dispatchEvent(new Event("taler-probe-result"));
-          }
-        `;
-        chrome.tabs.executeScript(tab.id!, { code, runAt: "document_start" });
-      });
-    };
-
-    addRun(0);
-    addRun(50);
-    addRun(300);
-    addRun(1000);
-    addRun(2000);
-    addRun(4000);
-    addRun(8000);
-    addRun(16000);
-    tabTimers[tabId] = timers;
-  });
-
-  chrome.extension.getBackgroundPage().setInterval(clearRateLimitCache, 5000);
-
-  let db: IDBDatabase;
-  try {
-    db = await openTalerDb();
-  } catch (e) {
-    console.error("could not open database", e);
-    return;
-  }
-  const http = new BrowserHttpLib();
-  const notifier = new ChromeNotifier();
-  console.log("setting wallet");
-  const wallet = new Wallet(db, http, badge!, notifier);
-  // Useful for debugging in the background page.
-  (window as any).talerWallet = wallet;
-
-  // Handlers for messages coming directly from the content
-  // script on the page
-  const handlers = makeHandlers(db, wallet!);
-  chrome.runtime.onMessage.addListener((req, sender, sendResponse) => {
-    dispatch(handlers, req, sender, sendResponse);
-    return true;
-  });
-
-  // Handlers for catching HTTP requests
-  chrome.webRequest.onHeadersReceived.addListener((details) => {
-    if (details.statusCode === 402) {
-      console.log(`got 402 from ${details.url}`);
-      return handleHttpPayment(details.responseHeaders || [],
-        details.url,
-        details.tabId);
-    } else if (details.statusCode === 202) {
-      return handleBankRequest(wallet!, details.responseHeaders || [],
-        details.url,
-        details.tabId);
-    }
-  }, { urls: ["<all_urls>"] }, ["responseHeaders", "blocking"]);
-}
-
-
-/**
- * Return a promise that resolves
- * to the taler wallet db.
- */
-function openTalerDb(): Promise<IDBDatabase> {
-  return new Promise<IDBDatabase>((resolve, reject) => {
-    const req = indexedDB.open(DB_NAME, DB_VERSION);
-    req.onerror = (e) => {
-      reject(e);
-    };
-    req.onsuccess = (e) => {
-      resolve(req.result);
-    };
-    req.onupgradeneeded = (e) => {
-      const db = req.result;
-      console.log("DB: upgrade needed: oldVersion = " + e.oldVersion);
-      switch (e.oldVersion) {
-        case 0: // DB does not exist yet
-
-          for (const n in Stores) {
-            if ((Stores as any)[n] instanceof Store) {
-              const si: Store<any> = (Stores as any)[n];
-              const s = db.createObjectStore(si.name, si.storeParams);
-              for (const indexName in (si as any)) {
-                if ((si as any)[indexName] instanceof Index) {
-                  const ii: Index<any, any> = (si as any)[indexName];
-                  s.createIndex(ii.indexName, ii.keyPath);
-                }
-              }
-            }
-          }
-          break;
-        default:
-          if (e.oldVersion !== DB_VERSION) {
-            window.alert("Incompatible wallet dababase version, please reset" +
-                         " db.");
-            chrome.browserAction.setBadgeText({text: "err"});
-            chrome.browserAction.setBadgeBackgroundColor({color: "#F00"});
-            throw Error("incompatible DB");
-          }
-          break;
-      }
-    };
-  });
-}
-
-
-function exportDb(db: IDBDatabase): Promise<any> {
-  const dump = {
-    name: db.name,
-    stores: {} as {[s: string]: any},
-    version: db.version,
-  };
-
-  return new Promise((resolve, reject) => {
-
-    const tx = db.transaction(Array.from(db.objectStoreNames));
-    tx.addEventListener("complete", () => {
-      resolve(dump);
-    });
-    // tslint:disable-next-line:prefer-for-of
-    for (let i = 0; i < db.objectStoreNames.length; i++) {
-      const name = db.objectStoreNames[i];
-      const storeDump = {} as {[s: string]: any};
-      dump.stores[name] = storeDump;
-      tx.objectStore(name)
-        .openCursor()
-        .addEventListener("success", (e: Event) => {
-          const cursor = (e.target as any).result;
-          if (cursor) {
-            storeDump[cursor.key] = cursor.value;
-            cursor.continue();
-          }
-        });
-    }
-  });
-}
-
-
-function importDb(db: IDBDatabase, dump: any): Promise<void> {
-  console.log("importing db", dump);
-  return new Promise<void>((resolve, reject) => {
-    const tx = db.transaction(Array.from(db.objectStoreNames), "readwrite");
-    if (dump.stores) {
-      for (const storeName in dump.stores) {
-        const objects = [];
-        const dumpStore = dump.stores[storeName];
-        for (const key in dumpStore) {
-          objects.push(dumpStore[key]);
-        }
-        console.log(`importing ${objects.length} records into ${storeName}`);
-        const store = tx.objectStore(storeName);
-        const clearReq = store.clear();
-        for (const obj of objects) {
-          store.put(obj);
-        }
-      }
-    }
-    tx.addEventListener("complete", () => {
-      resolve();
-    });
-  });
-}
-
-
-function deleteDb() {
-  indexedDB.deleteDatabase(DB_NAME);
-}