mirror of https://github.com/moparisthebest/mail
1173 lines
38 KiB
JavaScript
1173 lines
38 KiB
JavaScript
define(function(require) {
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'use strict';
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var util = require('cryptoLib/util'),
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_ = require('underscore'),
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str = require('js/app-config').string;
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// config = require('js/app-config').config;
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var EmailDAO = function(keychain, imapClient, smtpClient, crypto, devicestorage) {
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var self = this;
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self._keychain = keychain;
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self._imapClient = imapClient;
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self._smtpClient = smtpClient;
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self._crypto = crypto;
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self._devicestorage = devicestorage;
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// delegation-esque pattern to mitigate between node-style events and plain js
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self._imapClient.onIncomingMessage = function(message) {
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if (typeof self.onIncomingMessage === 'function') {
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self.onIncomingMessage(message);
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}
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};
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};
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//
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// External API
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//
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EmailDAO.prototype.init = function(options, callback) {
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var self = this,
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keypair;
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self._account = options.account;
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// validate email address
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var emailAddress = self._account.emailAddress;
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if (!util.validateEmailAddress(emailAddress)) {
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callback({
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errMsg: 'The user email address must be specified!'
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});
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return;
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}
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// init keychain and then crypto module
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initKeychain();
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function initKeychain() {
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// init user's local database
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self._devicestorage.init(emailAddress, function() {
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// call getUserKeyPair to read/sync keypair with devicestorage/cloud
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self._keychain.getUserKeyPair(emailAddress, function(err, storedKeypair) {
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if (err) {
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callback(err);
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return;
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}
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keypair = storedKeypair;
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initFolders();
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});
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});
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}
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function initFolders() {
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self._imapLogin(function(err) {
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if (err) {
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callback(err);
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return;
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}
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self._imapListFolders(function(err, folders) {
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if (err) {
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callback(err);
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return;
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}
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self._account.folders = folders;
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callback(null, keypair);
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});
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});
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}
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};
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EmailDAO.prototype.unlock = function(options, callback) {
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var self = this;
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if (options.keypair) {
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// import existing key pair into crypto module
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self._crypto.importKeys({
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passphrase: options.passphrase,
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privateKeyArmored: options.keypair.privateKey.encryptedKey,
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publicKeyArmored: options.keypair.publicKey.publicKey
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}, callback);
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return;
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}
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// no keypair for is stored for the user... generate a new one
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self._crypto.generateKeys({
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emailAddress: self._account.emailAddress,
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keySize: self._account.asymKeySize,
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passphrase: options.passphrase
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}, function(err, generatedKeypair) {
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if (err) {
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callback(err);
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return;
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}
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// import the new key pair into crypto module
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self._crypto.importKeys({
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passphrase: options.passphrase,
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privateKeyArmored: generatedKeypair.privateKeyArmored,
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publicKeyArmored: generatedKeypair.publicKeyArmored
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}, function(err) {
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if (err) {
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callback(err);
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return;
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}
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// persist newly generated keypair
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var newKeypair = {
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publicKey: {
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_id: generatedKeypair.keyId,
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userId: self._account.emailAddress,
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publicKey: generatedKeypair.publicKeyArmored
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},
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privateKey: {
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_id: generatedKeypair.keyId,
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userId: self._account.emailAddress,
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encryptedKey: generatedKeypair.privateKeyArmored
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}
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};
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self._keychain.putUserKeyPair(newKeypair, callback);
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});
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});
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};
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EmailDAO.prototype.sync = function(options, callback) {
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/*
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* Here's how delta sync works:
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* delta1: storage > memory => we deleted messages, remove from remote
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* delta2: memory > storage => we added messages, push to remote <<< not supported yet
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* delta3: memory > imap => we deleted messages directly from the remote, remove from memory and storage
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* delta4: imap > memory => we have new messages available, fetch to memory and storage
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*/
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var self = this,
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folder,
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delta1 /*, delta2 */ , delta3, delta4,
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isFolderInitialized;
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// validate options
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if (!options.folder) {
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callback({
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errMsg: 'Invalid options!'
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});
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return;
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}
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folder = _.findWhere(self._account.folders, {
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path: options.folder
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});
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isFolderInitialized = !! folder.messages;
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// initial filling from local storage is an exception from the normal sync.
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// after reading from local storage, do imap sync
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if (!isFolderInitialized) {
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folder.messages = [];
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self._localListMessages({
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folder: folder.path
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}, function(err, messages) {
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if (err) {
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callback(err);
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return;
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}
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if (_.isEmpty(messages)) {
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// if there's nothing here, we're good
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callback();
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return;
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}
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var after = _.after(messages.length, function() {
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callback();
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doImapDelta();
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});
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messages.forEach(function(message) {
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handleMessage(message, function(cleartextMessage) {
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folder.messages.push(cleartextMessage);
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after();
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});
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});
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});
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return;
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}
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doLocalDelta();
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function doLocalDelta() {
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self._localListMessages({
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folder: folder.path
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}, function(err, messages) {
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/*
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* delta1: storage > memory => we deleted messages, remove from remote
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* delta2: memory > storage => we added messages, push to remote
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*/
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delta1 = checkDelta(messages, folder.messages);
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// delta2 = checkDelta(folder.messages, messages); // not supported yet
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if (_.isEmpty(delta1) /* && _.isEmpty(delta2)*/ ) {
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// if there is no delta, head directly to imap sync
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doImapDelta();
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callback();
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return;
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}
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doDelta1();
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function doDelta1() {
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var after = _.after(delta1.length, function() {
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// doDelta2(); when it is implemented
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doImapDelta();
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callback();
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});
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delta1.forEach(function(message) {
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var deleteMe = {
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folder: folder.path,
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uid: message.uid
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};
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self._imapDeleteMessage(deleteMe, function() {
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self._localDeleteMessage(deleteMe, function() {
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after();
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});
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});
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});
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}
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});
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}
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function doImapDelta() {
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self._imapListMessages({
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folder: folder.path
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}, function(err, headers) {
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if (err) {
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callback(err);
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return;
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}
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// ignore non-whiteout mails
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headers = _.without(headers, _.filter(headers, function(header) {
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return header.subject.indexOf(str.subjectPrefix) === -1;
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}));
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/*
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* delta3: memory > imap => we deleted messages directly from the remote, remove from memory and storage
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* delta4: imap > memory => we have new messages available, fetch to memory and storage
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*/
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delta3 = checkDelta(folder.messages, headers);
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delta4 = checkDelta(headers, folder.messages);
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if (_.isEmpty(delta3) && _.isEmpty(delta4)) {
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// if there is no delta, we're done
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callback();
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return;
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}
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doDelta3();
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// we deleted messages directly from the remote, remove from memory and storage
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function doDelta3() {
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if (_.isEmpty(delta3)) {
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doDelta4();
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return;
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}
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var after = _.after(delta3.length, function() {
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// we're done with delta 3, so let's continue
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doDelta4();
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});
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delta3.forEach(function(header) {
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// remove delta3 from memory
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var idx = folder.messages.indexOf(header);
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folder.messages.splice(idx, 1);
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// remove delta3 from local storage
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self._localDeleteMessage({
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folder: folder.path,
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uid: header.uid
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}, function(err) {
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if (err) {
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callback(err);
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return;
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}
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after();
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});
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});
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}
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// we have new messages available, fetch to memory and storage
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// (downstream sync)
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function doDelta4() {
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// no delta, we're done here
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if (_.isEmpty(delta4)) {
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callback();
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}
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var after = _.after(delta4.length, function() {
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callback();
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});
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delta4.forEach(function(header) {
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// get the whole message
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self._imapGetMessage({
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folder: folder.path,
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uid: header.uid
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}, function(err, message) {
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if (err) {
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callback(err);
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return;
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}
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// add the encrypted message to the local storage
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self._localStoreMessages({
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folder: folder.path,
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emails: [message]
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}, function(err) {
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if (err) {
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callback(err);
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return;
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}
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// encrypt and add to folder in memory
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handleMessage(message, function(err, cleartextMessage) {
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if (err) {
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callback(err);
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return;
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}
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folder.messages.push(cleartextMessage);
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after();
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});
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});
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});
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});
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}
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});
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}
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/*
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* Checks which messages are included in a, but not in b
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*/
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function checkDelta(a, b) {
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var i, msg, exists,
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delta = [];
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// find the delta
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for (i = a.length - 1; i >= 0; i--) {
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msg = a[i];
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exists = _.findWhere(b, {
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uid: msg.uid,
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subject: msg.subject
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});
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if (!exists) {
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delta.push(msg);
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}
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}
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return delta;
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}
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function handleMessage(message, localCallback) {
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if (containsArmoredCiphertext(message)) {
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decrypt(message, localCallback);
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return;
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}
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// cleartext mail
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localCallback(null, message);
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after();
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}
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function containsArmoredCiphertext(email) {
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return typeof email.body === 'string' && email.body.indexOf(str.cryptPrefix) !== -1 && email.body.indexOf(str.cryptSuffix) !== -1;
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}
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function decrypt(email, localCallback) {
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var sender;
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extractArmoredContent(email);
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// fetch public key required to verify signatures
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sender = email.from[0].address;
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self._keychain.getReceiverPublicKey(sender, function(err, senderPubkey) {
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if (err) {
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localCallback(err);
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return;
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}
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if (!senderPubkey) {
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// this should only happen if a mail from another channel is in the inbox
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setBodyAndContinue('Public key for sender not found!');
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return;
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}
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// decrypt and verfiy signatures
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self._crypto.decrypt(email.body, senderPubkey.publicKey, function(err, decrypted) {
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if (err) {
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decrypted = err.errMsg;
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}
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setBodyAndContinue(decrypted);
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});
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});
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function extractArmoredContent(email) {
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var start = email.body.indexOf(str.cryptPrefix),
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end = email.body.indexOf(str.cryptSuffix) + str.cryptSuffix.length;
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// parse email body for encrypted message block
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email.body = email.body.substring(start, end);
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}
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function setBodyAndContinue(text) {
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email.body = text;
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localCallback(null, email);
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}
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}
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};
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EmailDAO.prototype.markRead = function(options, callback) {
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this._imapClient.updateFlags({
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path: options.folder,
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uid: options.uid,
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unread: false
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}, callback);
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};
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EmailDAO.prototype.markAnswered = function(options, callback) {
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this._imapClient.updateFlags({
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path: options.folder,
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uid: options.uid,
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answered: true
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}, callback);
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};
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EmailDAO.prototype.encryptedSend = function(options, callback) {
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var self = this,
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email = options.email;
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// validate the email input
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if (!email.to || !email.from || !email.to[0].address || !email.from[0].address) {
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callback({
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errMsg: 'Invalid email object!'
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});
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return;
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}
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// validate email addresses
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for (var i = email.to.length - 1; i >= 0; i--) {
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if (!util.validateEmailAddress(email.to[i].address)) {
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callback({
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errMsg: 'Invalid recipient: ' + email.to[i].address
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});
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return;
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}
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}
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if (!util.validateEmailAddress(email.from[0].address)) {
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callback({
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errMsg: 'Invalid sender: ' + email.from
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});
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return;
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}
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// only support single recipient for e-2-e encryption
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// check if receiver has a public key
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self._keychain.getReceiverPublicKey(email.to[0].address, function(err, receiverPubkey) {
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if (err) {
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callback(err);
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return;
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}
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// validate public key
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if (!receiverPubkey) {
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callback({
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errMsg: 'User has no public key yet!'
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});
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return;
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}
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// public key found... encrypt and send
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self._encrypt({
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email: email,
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keys: receiverPubkey.publicKey
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}, function(err, email) {
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if (err) {
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callback(err);
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return;
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}
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self.send({
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email: email
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}, callback);
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});
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});
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};
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EmailDAO.prototype.send = function(options, callback) {
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this._smtpClient.send(options.email, callback);
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};
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//
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// Internal API
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//
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// Encryption API
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EmailDAO.prototype._encrypt = function(options, callback) {
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var self = this,
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pt = options.email.body;
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options.keys = [options.keys] || [];
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// get own public key so send message can be read
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self._crypto.exportKeys(function(err, ownKeys) {
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if (err) {
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callback(err);
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return;
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}
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// add own public key to receiver list
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options.keys.push(ownKeys.publicKeyArmored);
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// encrypt the email
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self._crypto.encrypt(pt, options.keys, function(err, ct) {
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if (err) {
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callback(err);
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return;
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}
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// bundle encrypted email together for sending
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frameEncryptedMessage(options.email, ct);
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callback(null, options.email);
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});
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});
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function frameEncryptedMessage(email, ct) {
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var greeting,
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message = str.message + '\n\n\n',
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signature = '\n\n' + str.signature + '\n\n';
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// get first name of recipient
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greeting = 'Hi ' + (email.to[0].name || email.to[0].address).split('@')[0].split('.')[0].split(' ')[0] + ',\n\n';
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// build encrypted text body
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email.body = greeting + message + ct + signature;
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email.subject = email.subject;
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}
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};
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// Local Storage API
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EmailDAO.prototype._localListMessages = function(options, callback) {
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var dbType = 'email_' + options.folder;
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this._devicestorage.listItems(dbType, 0, null, callback);
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};
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EmailDAO.prototype._localStoreMessages = function(options, callback) {
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var dbType = 'email_' + options.folder;
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this._devicestorage.storeList(options.emails, dbType, callback);
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};
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EmailDAO.prototype._localDeleteMessage = function(options, callback) {
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var dbType = 'email_' + options.folder + '_' + options.uid;
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this._devicestorage.removeList(dbType, callback);
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};
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// IMAP API
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/**
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* Login the imap client
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*/
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EmailDAO.prototype._imapLogin = function(callback) {
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// login IMAP client if existent
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this._imapClient.login(callback);
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};
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/**
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* Cleanup by logging the user off.
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*/
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EmailDAO.prototype._imapLogout = function(callback) {
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this._imapClient.logout(callback);
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};
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/**
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* List messages from an imap folder. This will not yet fetch the email body.
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* @param {String} options.folderName The name of the imap folder.
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*/
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EmailDAO.prototype._imapListMessages = function(options, callback) {
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this._imapClient.listMessages({
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path: options.folder,
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offset: 0,
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length: 100
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}, callback);
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};
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|
|
|
EmailDAO.prototype._imapDeleteMessage = function(options, callback) {
|
|
this._imapClient.deleteMessage({
|
|
path: options.folder,
|
|
uid: options.uid
|
|
}, callback);
|
|
};
|
|
|
|
/**
|
|
* Get an email messsage including the email body from imap
|
|
* @param {String} options.messageId The
|
|
*/
|
|
EmailDAO.prototype._imapGetMessage = function(options, callback) {
|
|
this._imapClient.getMessagePreview({
|
|
path: options.folder,
|
|
uid: options.uid
|
|
}, callback);
|
|
};
|
|
|
|
/**
|
|
* List the folders in the user's IMAP mailbox.
|
|
*/
|
|
EmailDAO.prototype._imapListFolders = function(callback) {
|
|
var self = this,
|
|
dbType = 'folders';
|
|
|
|
// check local cache
|
|
self._devicestorage.listItems(dbType, 0, null, function(err, stored) {
|
|
if (err) {
|
|
callback(err);
|
|
return;
|
|
}
|
|
|
|
if (!stored || stored.length < 1) {
|
|
// no folders cached... fetch from server
|
|
fetchFromServer();
|
|
return;
|
|
}
|
|
|
|
callback(null, stored[0]);
|
|
});
|
|
|
|
function fetchFromServer() {
|
|
var folders;
|
|
|
|
// fetch list from imap server
|
|
self._imapClient.listWellKnownFolders(function(err, wellKnownFolders) {
|
|
if (err) {
|
|
callback(err);
|
|
return;
|
|
}
|
|
|
|
folders = [
|
|
wellKnownFolders.inbox,
|
|
wellKnownFolders.sent, {
|
|
type: 'Outbox',
|
|
path: 'OUTBOX'
|
|
},
|
|
wellKnownFolders.drafts,
|
|
wellKnownFolders.trash
|
|
];
|
|
|
|
// cache locally
|
|
// persist encrypted list in device storage
|
|
self._devicestorage.storeList([folders], dbType, function(err) {
|
|
if (err) {
|
|
callback(err);
|
|
return;
|
|
}
|
|
|
|
callback(null, folders);
|
|
});
|
|
});
|
|
}
|
|
};
|
|
|
|
|
|
|
|
// /**
|
|
// * Get the number of unread message for a folder
|
|
// */
|
|
// EmailDAO.prototype.unreadMessages = function(path, callback) {
|
|
// var self = this;
|
|
|
|
// self._imapClient.unreadMessages(path, callback);
|
|
// };
|
|
|
|
// /**
|
|
// * Fetch a list of emails from the device's local storage
|
|
// */
|
|
// EmailDAO.prototype.listMessages = function(options, callback) {
|
|
// var self = this,
|
|
// cleartextList = [];
|
|
|
|
// // validate options
|
|
// if (!options.folder) {
|
|
// callback({
|
|
// errMsg: 'Invalid options!'
|
|
// });
|
|
// return;
|
|
// }
|
|
// options.offset = (typeof options.offset === 'undefined') ? 0 : options.offset;
|
|
// options.num = (typeof options.num === 'undefined') ? null : options.num;
|
|
|
|
// // fetch items from device storage
|
|
// self._devicestorage.listItems('email_' + options.folder, options.offset, options.num, function(err, emails) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// if (emails.length === 0) {
|
|
// callback(null, cleartextList);
|
|
// return;
|
|
// }
|
|
|
|
// var after = _.after(emails.length, function() {
|
|
// callback(null, cleartextList);
|
|
// });
|
|
|
|
// _.each(emails, function(email) {
|
|
// handleMail(email, after);
|
|
// });
|
|
// });
|
|
|
|
// function handleMail(email, localCallback) {
|
|
// // remove subject filter prefix
|
|
// email.subject = email.subject.split(str.subjectPrefix)[1];
|
|
|
|
// // encrypted mail
|
|
// if (isPGPMail(email)) {
|
|
// email = parseMessageBlock(email);
|
|
// decrypt(email, localCallback);
|
|
// return;
|
|
// }
|
|
|
|
// // verification mail
|
|
// if (isVerificationMail(email)) {
|
|
// verify(email, localCallback);
|
|
// return;
|
|
// }
|
|
|
|
// // cleartext mail
|
|
// cleartextList.push(email);
|
|
// localCallback();
|
|
// }
|
|
|
|
// function isPGPMail(email) {
|
|
// return typeof email.body === 'string' && email.body.indexOf(str.cryptPrefix) !== -1 && email.body.indexOf(str.cryptSuffix) !== -1;
|
|
// }
|
|
|
|
// function isVerificationMail(email) {
|
|
// return email.subject === str.verificationSubject;
|
|
// }
|
|
|
|
// function parseMessageBlock(email) {
|
|
// var messageBlock;
|
|
|
|
// // parse email body for encrypted message block
|
|
// // get ascii armored message block by prefix and suffix
|
|
// messageBlock = email.body.split(str.cryptPrefix)[1].split(str.cryptSuffix)[0];
|
|
// // add prefix and suffix again
|
|
// email.body = str.cryptPrefix + messageBlock + str.cryptSuffix;
|
|
|
|
// return email;
|
|
// }
|
|
|
|
// function decrypt(email, localCallback) {
|
|
// // fetch public key required to verify signatures
|
|
// var sender = email.from[0].address;
|
|
// self._keychain.getReceiverPublicKey(sender, function(err, senderPubkey) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// if (!senderPubkey) {
|
|
// // this should only happen if a mail from another channel is in the inbox
|
|
// setBodyAndContinue('Public key for sender not found!');
|
|
// return;
|
|
// }
|
|
|
|
// // decrypt and verfiy signatures
|
|
// self._pgp.decrypt(email.body, senderPubkey.publicKey, function(err, decrypted) {
|
|
// if (err) {
|
|
// decrypted = err.errMsg;
|
|
// }
|
|
|
|
// setBodyAndContinue(decrypted);
|
|
// });
|
|
// });
|
|
|
|
// function setBodyAndContinue(text) {
|
|
// email.body = text;
|
|
// cleartextList.push(email);
|
|
// localCallback();
|
|
// }
|
|
// }
|
|
|
|
// function verify(email, localCallback) {
|
|
// var uuid, index,
|
|
// verifiyUrlPrefix = config.cloudUrl + config.verificationUrl;
|
|
|
|
// if (!email.unread) {
|
|
// // don't bother if the email was already marked as read
|
|
// localCallback();
|
|
// return;
|
|
// }
|
|
|
|
// index = email.body.indexOf(verifiyUrlPrefix);
|
|
// if (index === -1) {
|
|
// localCallback();
|
|
// return;
|
|
// }
|
|
|
|
// uuid = email.body.split(config.verificationUrl)[1];
|
|
// self._keychain.verifyPublicKey(uuid, function(err) {
|
|
// if (err) {
|
|
// callback({
|
|
// errMsg: 'Verifying your public key failed: ' + err.errMsg
|
|
// });
|
|
// return;
|
|
// }
|
|
|
|
// // public key has been verified, mark the message as read, delete it, and ignore it in the future
|
|
// self.imapMarkMessageRead({
|
|
// folder: options.folder,
|
|
// uid: email.uid
|
|
// }, function(err) {
|
|
// if (err) {
|
|
// // if marking the mail as read failed, don't bother
|
|
// localCallback();
|
|
// return;
|
|
// }
|
|
|
|
// self.imapDeleteMessage({
|
|
// folder: options.folder,
|
|
// uid: email.uid
|
|
// }, function() {
|
|
// localCallback();
|
|
// });
|
|
// });
|
|
// });
|
|
// }
|
|
// };
|
|
|
|
// /**
|
|
// * High level sync operation for the delta from the user's IMAP inbox
|
|
// */
|
|
// EmailDAO.prototype.imapSync = function(options, callback) {
|
|
// var self = this,
|
|
// dbType = 'email_' + options.folder;
|
|
|
|
// fetchList(function(err, emails) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// // delete old items from db
|
|
// self._devicestorage.removeList(dbType, function(err) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// // persist encrypted list in device storage
|
|
// self._devicestorage.storeList(emails, dbType, callback);
|
|
// });
|
|
// });
|
|
|
|
// function fetchList(callback) {
|
|
// var headers = [];
|
|
|
|
// // fetch imap folder's message list
|
|
// self.imapListMessages({
|
|
// folder: options.folder,
|
|
// offset: options.offset,
|
|
// num: options.num
|
|
// }, function(err, emails) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// // find encrypted messages by subject
|
|
// emails.forEach(function(i) {
|
|
// if (typeof i.subject === 'string' && i.subject.indexOf(str.subjectPrefix) !== -1) {
|
|
// headers.push(i);
|
|
// }
|
|
// });
|
|
|
|
// // fetch message bodies
|
|
// fetchBodies(headers, callback);
|
|
// });
|
|
// }
|
|
|
|
// function fetchBodies(headers, callback) {
|
|
// var emails = [];
|
|
|
|
// if (headers.length < 1) {
|
|
// callback(null, emails);
|
|
// return;
|
|
// }
|
|
|
|
// var after = _.after(headers.length, function() {
|
|
// callback(null, emails);
|
|
// });
|
|
|
|
// _.each(headers, function(header) {
|
|
// self.imapGetMessage({
|
|
// folder: options.folder,
|
|
// uid: header.uid
|
|
// }, function(err, message) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// // set gotten attributes like body to message object containing list meta data like 'unread' or 'replied'
|
|
// header.id = message.id;
|
|
// header.body = message.body;
|
|
// header.html = message.html;
|
|
// header.attachments = message.attachments;
|
|
|
|
// emails.push(header);
|
|
// after();
|
|
// });
|
|
// });
|
|
// }
|
|
// };
|
|
|
|
|
|
|
|
// EmailDAO.prototype.imapMoveMessage = function(options, callback) {
|
|
// var self = this;
|
|
|
|
// self._imapClient.moveMessage({
|
|
// path: options.folder,
|
|
// uid: options.uid,
|
|
// destination: options.destination
|
|
// }, moved);
|
|
|
|
// function moved(err) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// // delete from local db
|
|
// self._devicestorage.removeList('email_' + options.folder + '_' + options.uid, callback);
|
|
// }
|
|
// };
|
|
|
|
// EmailDAO.prototype.imapMarkMessageRead = function(options, callback) {
|
|
// var self = this;
|
|
|
|
// self._imapClient.updateFlags({
|
|
// path: options.folder,
|
|
// uid: options.uid,
|
|
// unread: false
|
|
// }, callback);
|
|
// };
|
|
|
|
// EmailDAO.prototype.imapMarkAnswered = function(options, callback) {
|
|
// var self = this;
|
|
|
|
// self._imapClient.updateFlags({
|
|
// path: options.folder,
|
|
// uid: options.uid,
|
|
// answered: true
|
|
// }, callback);
|
|
// };
|
|
|
|
// //
|
|
// // SMTP Apis
|
|
// //
|
|
|
|
// /**
|
|
// * Send an email client side via STMP.
|
|
// */
|
|
// EmailDAO.prototype.encryptedSend = function(email, callback) {
|
|
// var self = this,
|
|
// invalidRecipient;
|
|
|
|
// // validate the email input
|
|
// if (!email.to || !email.from || !email.to[0].address || !email.from[0].address) {
|
|
// callback({
|
|
// errMsg: 'Invalid email object!'
|
|
// });
|
|
// return;
|
|
// }
|
|
|
|
// // validate email addresses
|
|
// _.each(email.to, function(i) {
|
|
// if (!util.validateEmailAddress(i.address)) {
|
|
// invalidRecipient = i.address;
|
|
// }
|
|
// });
|
|
// if (invalidRecipient) {
|
|
// callback({
|
|
// errMsg: 'Invalid recipient: ' + invalidRecipient
|
|
// });
|
|
// return;
|
|
// }
|
|
// if (!util.validateEmailAddress(email.from[0].address)) {
|
|
// callback({
|
|
// errMsg: 'Invalid sender: ' + email.from
|
|
// });
|
|
// return;
|
|
// }
|
|
|
|
// // only support single recipient for e-2-e encryption
|
|
// // check if receiver has a public key
|
|
// self._keychain.getReceiverPublicKey(email.to[0].address, function(err, receiverPubkey) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// // validate public key
|
|
// if (!receiverPubkey) {
|
|
// callback({
|
|
// errMsg: 'User has no public key yet!'
|
|
// });
|
|
// return;
|
|
// }
|
|
|
|
// // public key found... encrypt and send
|
|
// self.encryptForUser({
|
|
// email: email,
|
|
// receiverPubkey: receiverPubkey.publicKey
|
|
// }, function(err, email) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// self.send(email, callback);
|
|
// });
|
|
// });
|
|
// };
|
|
|
|
// /**
|
|
// * Encrypt an email asymmetrically for an exisiting user with their public key
|
|
// */
|
|
// EmailDAO.prototype.encryptForUser = function(options, callback) {
|
|
// var self = this,
|
|
// pt = options.email.body,
|
|
// receiverPubkeys = options.receiverPubkey ? [options.receiverPubkey] : [];
|
|
|
|
// // get own public key so send message can be read
|
|
// self._pgp.exportKeys(function(err, ownKeys) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// // add own public key to receiver list
|
|
// receiverPubkeys.push(ownKeys.publicKeyArmored);
|
|
// // encrypt the email
|
|
// self._pgp.encrypt(pt, receiverPubkeys, function(err, ct) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// // bundle encrypted email together for sending
|
|
// frameEncryptedMessage(options.email, ct);
|
|
// callback(null, options.email);
|
|
// });
|
|
// });
|
|
// };
|
|
|
|
// /**
|
|
// * Frames an encrypted message in base64 Format.
|
|
// */
|
|
// function frameEncryptedMessage(email, ct) {
|
|
// var to, greeting;
|
|
|
|
// var MESSAGE = str.message + '\n\n\n',
|
|
// SIGNATURE = '\n\n' + str.signature + '\n\n';
|
|
|
|
// // get first name of recipient
|
|
// to = (email.to[0].name || email.to[0].address).split('@')[0].split('.')[0].split(' ')[0];
|
|
// greeting = 'Hi ' + to + ',\n\n';
|
|
|
|
// // build encrypted text body
|
|
// email.body = greeting + MESSAGE + ct + SIGNATURE;
|
|
// email.subject = str.subjectPrefix + email.subject;
|
|
// }
|
|
|
|
// /**
|
|
// * Send an actual message object via smtp
|
|
// */
|
|
// EmailDAO.prototype.send = function(email, callback) {
|
|
// var self = this;
|
|
|
|
// self._smtpClient.send(email, callback);
|
|
// };
|
|
|
|
// EmailDAO.prototype.store = function(email, callback) {
|
|
// var self = this,
|
|
// dbType = 'email_OUTBOX';
|
|
|
|
// email.id = util.UUID();
|
|
|
|
// // encrypt
|
|
// self.encryptForUser({
|
|
// email: email
|
|
// }, function(err, email) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// // store to local storage
|
|
// self._devicestorage.storeList([email], dbType, callback);
|
|
// });
|
|
// };
|
|
|
|
// EmailDAO.prototype.list = function(callback) {
|
|
// var self = this,
|
|
// dbType = 'email_OUTBOX';
|
|
|
|
// self._devicestorage.listItems(dbType, 0, null, function(err, mails) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// if (mails.length === 0) {
|
|
// callback(null, []);
|
|
// return;
|
|
// }
|
|
|
|
// self._pgp.exportKeys(function(err, ownKeys) {
|
|
// if (err) {
|
|
// callback(err);
|
|
// return;
|
|
// }
|
|
|
|
// var after = _.after(mails.length, function() {
|
|
// callback(null, mails);
|
|
// });
|
|
|
|
// mails.forEach(function(mail) {
|
|
// mail.body = str.cryptPrefix + mail.body.split(str.cryptPrefix)[1].split(str.cryptSuffix)[0] + str.cryptSuffix;
|
|
// self._pgp.decrypt(mail.body, ownKeys.publicKeyArmored, function(err, decrypted) {
|
|
// mail.body = err ? err.errMsg : decrypted;
|
|
// mail.subject = mail.subject.split(str.subjectPrefix)[1];
|
|
// after();
|
|
// });
|
|
// });
|
|
|
|
// });
|
|
// });
|
|
// };
|
|
|
|
return EmailDAO;
|
|
}); |