michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: "use strict";
michael@0: 
michael@0: this.EXPORTED_SYMBOLS = [
michael@0:   "FakeCryptoService",
michael@0:   "FakeFilesystemService",
michael@0:   "FakeGUIDService",
michael@0:   "fakeSHA256HMAC",
michael@0: ];
michael@0: 
michael@0: const {utils: Cu} = Components;
michael@0: 
michael@0: Cu.import("resource://services-sync/record.js");
michael@0: Cu.import("resource://services-sync/util.js");
michael@0: 
michael@0: let btoa = Cu.import("resource://gre/modules/Log.jsm").btoa;
michael@0: 
michael@0: this.FakeFilesystemService = function FakeFilesystemService(contents) {
michael@0:   this.fakeContents = contents;
michael@0:   let self = this;
michael@0: 
michael@0:   Utils.jsonSave = function jsonSave(filePath, that, obj, callback) {
michael@0:     let json = typeof obj == "function" ? obj.call(that) : obj;
michael@0:     self.fakeContents["weave/" + filePath + ".json"] = JSON.stringify(json);
michael@0:     callback.call(that);
michael@0:   };
michael@0: 
michael@0:   Utils.jsonLoad = function jsonLoad(filePath, that, cb) {
michael@0:     let obj;
michael@0:     let json = self.fakeContents["weave/" + filePath + ".json"];
michael@0:     if (json) {
michael@0:       obj = JSON.parse(json);
michael@0:     }
michael@0:     cb.call(that, obj);
michael@0:   };
michael@0: };
michael@0: 
michael@0: this.fakeSHA256HMAC = function fakeSHA256HMAC(message) {
michael@0:    message = message.substr(0, 64);
michael@0:    while (message.length < 64) {
michael@0:      message += " ";
michael@0:    }
michael@0:    return message;
michael@0: }
michael@0: 
michael@0: this.FakeGUIDService = function FakeGUIDService() {
michael@0:   let latestGUID = 0;
michael@0: 
michael@0:   Utils.makeGUID = function makeGUID() {
michael@0:     return "fake-guid-" + latestGUID++;
michael@0:   };
michael@0: }
michael@0: 
michael@0: /*
michael@0:  * Mock implementation of WeaveCrypto. It does not encrypt or
michael@0:  * decrypt, merely returning the input verbatim.
michael@0:  */
michael@0: this.FakeCryptoService = function FakeCryptoService() {
michael@0:   this.counter = 0;
michael@0: 
michael@0:   delete Svc.Crypto;  // get rid of the getter first
michael@0:   Svc.Crypto = this;
michael@0: 
michael@0:   CryptoWrapper.prototype.ciphertextHMAC = function ciphertextHMAC(keyBundle) {
michael@0:     return fakeSHA256HMAC(this.ciphertext);
michael@0:   };
michael@0: }
michael@0: FakeCryptoService.prototype = {
michael@0: 
michael@0:   encrypt: function encrypt(clearText, symmetricKey, iv) {
michael@0:     return clearText;
michael@0:   },
michael@0: 
michael@0:   decrypt: function decrypt(cipherText, symmetricKey, iv) {
michael@0:     return cipherText;
michael@0:   },
michael@0: 
michael@0:   generateRandomKey: function generateRandomKey() {
michael@0:     return btoa("fake-symmetric-key-" + this.counter++);
michael@0:   },
michael@0: 
michael@0:   generateRandomIV: function generateRandomIV() {
michael@0:     // A base64-encoded IV is 24 characters long
michael@0:     return btoa("fake-fake-fake-random-iv");
michael@0:   },
michael@0: 
michael@0:   expandData: function expandData(data, len) {
michael@0:     return data;
michael@0:   },
michael@0: 
michael@0:   deriveKeyFromPassphrase: function deriveKeyFromPassphrase(passphrase,
michael@0:                                                             salt, keyLength) {
michael@0:     return "some derived key string composed of bytes";
michael@0:   },
michael@0: 
michael@0:   generateRandomBytes: function generateRandomBytes(byteCount) {
michael@0:     return "not-so-random-now-are-we-HA-HA-HA! >:)".slice(byteCount);
michael@0:   }
michael@0: };
michael@0: