зеркало из https://github.com/mozilla/gecko-dev.git
123 строки
3.6 KiB
JavaScript
123 строки
3.6 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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var EXPORTED_SYMBOLS = [
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"FakeCryptoService",
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"FakeFilesystemService",
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"FakeGUIDService",
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"fakeSHA256HMAC",
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];
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const { Weave } = ChromeUtils.import("resource://services-sync/main.js");
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const { CryptoWrapper } = ChromeUtils.import(
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"resource://services-sync/record.js"
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);
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const { Utils } = ChromeUtils.import("resource://services-sync/util.js");
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function FakeFilesystemService(contents) {
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this.fakeContents = contents;
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let self = this;
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// Save away the unmocked versions of the functions we replace here for tests
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// that really want the originals. As this may be called many times per test,
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// we must be careful to not replace them with ones we previously replaced.
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// (And why are we bothering with these mocks in the first place? Is the
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// performance of the filesystem *really* such that it outweighs the downside
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// of not running our real JSON functions in the tests? Eg, these mocks don't
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// always throw exceptions when the real ones do. Anyway...)
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for (let name of ["jsonSave", "jsonLoad", "jsonMove", "jsonRemove"]) {
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let origName = "_real_" + name;
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if (!Utils[origName]) {
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Utils[origName] = Utils[name];
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}
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}
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Utils.jsonSave = async function jsonSave(filePath, that, obj) {
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let json = typeof obj == "function" ? obj.call(that) : obj;
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self.fakeContents["weave/" + filePath + ".json"] = JSON.stringify(json);
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};
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Utils.jsonLoad = async function jsonLoad(filePath, that) {
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let obj;
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let json = self.fakeContents["weave/" + filePath + ".json"];
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if (json) {
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obj = JSON.parse(json);
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}
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return obj;
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};
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Utils.jsonMove = function jsonMove(aFrom, aTo, that) {
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const fromPath = "weave/" + aFrom + ".json";
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self.fakeContents["weave/" + aTo + ".json"] = self.fakeContents[fromPath];
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delete self.fakeContents[fromPath];
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return Promise.resolve();
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};
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Utils.jsonRemove = function jsonRemove(filePath, that) {
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delete self.fakeContents["weave/" + filePath + ".json"];
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return Promise.resolve();
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};
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}
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function fakeSHA256HMAC(message) {
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message = message.substr(0, 64);
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while (message.length < 64) {
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message += " ";
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}
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return message;
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}
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function FakeGUIDService() {
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let latestGUID = 0;
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Utils.makeGUID = function makeGUID() {
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// ensure that this always returns a unique 12 character string
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let nextGUID = "fake-guid-" + String(latestGUID++).padStart(2, "0");
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return nextGUID.slice(nextGUID.length - 12, nextGUID.length);
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};
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}
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/*
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* Mock implementation of WeaveCrypto. It does not encrypt or
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* decrypt, merely returning the input verbatim.
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*/
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function FakeCryptoService() {
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this.counter = 0;
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delete Weave.Crypto; // get rid of the getter first
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Weave.Crypto = this;
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CryptoWrapper.prototype.ciphertextHMAC = function ciphertextHMAC(keyBundle) {
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return fakeSHA256HMAC(this.ciphertext);
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};
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}
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FakeCryptoService.prototype = {
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async encrypt(clearText, symmetricKey, iv) {
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return clearText;
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},
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async decrypt(cipherText, symmetricKey, iv) {
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return cipherText;
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},
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async generateRandomKey() {
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return btoa("fake-symmetric-key-" + this.counter++);
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},
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generateRandomIV: function generateRandomIV() {
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// A base64-encoded IV is 24 characters long
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return btoa("fake-fake-fake-random-iv");
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},
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expandData: function expandData(data, len) {
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return data;
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},
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generateRandomBytes: function generateRandomBytes(byteCount) {
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return "not-so-random-now-are-we-HA-HA-HA! >:)".slice(byteCount);
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},
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};
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