mirror of https://github.com/moparisthebest/mail
725 lines
23 KiB
JavaScript
725 lines
23 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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// Housekeeping APIs
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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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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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callback(null, storedKeypair);
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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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// //
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// // IMAP Apis
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// //
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EmailDAO.prototype.login = function(callback) {
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var self = this;
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// login IMAP client if existent
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self._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.destroy = function(callback) {
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var self = this;
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self._imapClient.logout(callback);
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};
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// /**
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// * Login the imap client
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// */
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// /**
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// * List the folders in the user's IMAP mailbox.
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// */
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// EmailDAO.prototype.imapListFolders = function(callback) {
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// var self = this,
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// dbType = 'folders';
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// // check local cache
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// self._devicestorage.listItems(dbType, 0, null, function(err, stored) {
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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 (!stored || stored.length < 1) {
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// // no folders cached... fetch from server
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// fetchFromServer();
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// return;
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// }
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// callback(null, stored[0]);
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// });
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// function fetchFromServer() {
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// var folders;
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// // fetch list from imap server
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// self._imapClient.listWellKnownFolders(function(err, wellKnownFolders) {
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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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// folders = [
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// wellKnownFolders.inbox,
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// wellKnownFolders.sent, {
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// type: 'Outbox',
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// path: 'OUTBOX'
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// },
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// wellKnownFolders.drafts,
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// wellKnownFolders.trash
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// ];
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// // cache locally
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// // persist encrypted list in device storage
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// self._devicestorage.storeList([folders], dbType, 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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// callback(null, folders);
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// });
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// });
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// }
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// };
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// /**
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// * Get the number of unread message for a folder
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// */
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// EmailDAO.prototype.unreadMessages = function(path, callback) {
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// var self = this;
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// self._imapClient.unreadMessages(path, callback);
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// };
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// /**
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// * Fetch a list of emails from the device's local storage
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// */
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// EmailDAO.prototype.listMessages = function(options, callback) {
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// var self = this,
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// cleartextList = [];
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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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// options.offset = (typeof options.offset === 'undefined') ? 0 : options.offset;
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// options.num = (typeof options.num === 'undefined') ? null : options.num;
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// // fetch items from device storage
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// self._devicestorage.listItems('email_' + options.folder, options.offset, options.num, function(err, emails) {
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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 (emails.length === 0) {
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// callback(null, cleartextList);
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// return;
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// }
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// var after = _.after(emails.length, function() {
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// callback(null, cleartextList);
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// });
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// _.each(emails, function(email) {
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// handleMail(email, after);
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// });
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// });
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// function handleMail(email, localCallback) {
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// // remove subject filter prefix
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// email.subject = email.subject.split(str.subjectPrefix)[1];
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// // encrypted mail
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// if (isPGPMail(email)) {
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// email = parseMessageBlock(email);
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// decrypt(email, localCallback);
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// return;
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// }
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// // verification mail
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// if (isVerificationMail(email)) {
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// verify(email, localCallback);
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// return;
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// }
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// // cleartext mail
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// cleartextList.push(email);
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// localCallback();
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// }
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// function isPGPMail(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 isVerificationMail(email) {
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// return email.subject === str.verificationSubject;
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// }
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// function parseMessageBlock(email) {
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// var messageBlock;
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// // parse email body for encrypted message block
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// // get ascii armored message block by prefix and suffix
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// messageBlock = email.body.split(str.cryptPrefix)[1].split(str.cryptSuffix)[0];
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// // add prefix and suffix again
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// email.body = str.cryptPrefix + messageBlock + str.cryptSuffix;
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// return email;
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// }
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// function decrypt(email, localCallback) {
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// // fetch public key required to verify signatures
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// var 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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// callback(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._pgp.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 setBodyAndContinue(text) {
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// email.body = text;
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// cleartextList.push(email);
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// localCallback();
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// }
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// }
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// function verify(email, localCallback) {
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// var uuid, index,
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// verifiyUrlPrefix = config.cloudUrl + config.verificationUrl;
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// if (!email.unread) {
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// // don't bother if the email was already marked as read
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// localCallback();
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// return;
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// }
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// index = email.body.indexOf(verifiyUrlPrefix);
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// if (index === -1) {
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// localCallback();
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// return;
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// }
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// uuid = email.body.split(config.verificationUrl)[1];
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// self._keychain.verifyPublicKey(uuid, function(err) {
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// if (err) {
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// callback({
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// errMsg: 'Verifying your public key failed: ' + err.errMsg
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// });
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// return;
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// }
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// // public key has been verified, mark the message as read, delete it, and ignore it in the future
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// self.imapMarkMessageRead({
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// folder: options.folder,
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// uid: email.uid
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// }, function(err) {
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// if (err) {
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// // if marking the mail as read failed, don't bother
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// localCallback();
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// return;
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// }
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// self.imapDeleteMessage({
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// folder: options.folder,
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// uid: email.uid
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// }, function() {
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// localCallback();
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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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// * High level sync operation for the delta from the user's IMAP inbox
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// */
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// EmailDAO.prototype.imapSync = function(options, callback) {
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// var self = this,
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// dbType = 'email_' + options.folder;
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// fetchList(function(err, emails) {
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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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// // delete old items from db
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// self._devicestorage.removeList(dbType, 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 encrypted list in device storage
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// self._devicestorage.storeList(emails, dbType, callback);
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// });
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// });
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// function fetchList(callback) {
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// var headers = [];
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// // fetch imap folder's message list
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// self.imapListMessages({
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// folder: options.folder,
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// offset: options.offset,
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// num: options.num
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// }, function(err, emails) {
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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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// // find encrypted messages by subject
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// emails.forEach(function(i) {
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// if (typeof i.subject === 'string' && i.subject.indexOf(str.subjectPrefix) !== -1) {
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// headers.push(i);
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// }
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// });
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// // fetch message bodies
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// fetchBodies(headers, callback);
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// });
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// }
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// function fetchBodies(headers, callback) {
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// var emails = [];
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// if (headers.length < 1) {
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// callback(null, emails);
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// return;
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// }
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// var after = _.after(headers.length, function() {
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// callback(null, emails);
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// });
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// _.each(headers, function(header) {
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// self.imapGetMessage({
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// folder: options.folder,
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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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// // set gotten attributes like body to message object containing list meta data like 'unread' or 'replied'
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// header.id = message.id;
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// header.body = message.body;
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// header.html = message.html;
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// header.attachments = message.attachments;
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// emails.push(header);
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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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// * 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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// * @param {Number} options.offset The offset of items to fetch (0 is the last stored item)
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// * @param {Number} options.num The number of items to fetch (null means fetch all)
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// */
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// EmailDAO.prototype.imapListMessages = function(options, callback) {
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// var self = this;
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// self._imapClient.listMessages({
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// path: options.folder,
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// offset: options.offset,
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// length: options.num
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// }, callback);
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// };
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// /**
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// * Get an email messsage including the email body from imap
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// * @param {String} options.messageId The
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// */
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// EmailDAO.prototype.imapGetMessage = function(options, callback) {
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// var self = this;
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// self._imapClient.getMessagePreview({
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// path: options.folder,
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// uid: options.uid
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// }, callback);
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// };
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// EmailDAO.prototype.imapMoveMessage = function(options, callback) {
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// var self = this;
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// self._imapClient.moveMessage({
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// path: options.folder,
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// uid: options.uid,
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// destination: options.destination
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// }, moved);
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// function moved(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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// // delete from local db
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// self._devicestorage.removeList('email_' + options.folder + '_' + options.uid, callback);
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// }
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// };
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// EmailDAO.prototype.imapDeleteMessage = function(options, callback) {
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// var self = this;
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// self._imapClient.deleteMessage({
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// path: options.folder,
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// uid: options.uid
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// }, moved);
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// function moved(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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// // delete from local db
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// self._devicestorage.removeList('email_' + options.folder + '_' + options.uid, callback);
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// }
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// };
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// EmailDAO.prototype.imapMarkMessageRead = function(options, callback) {
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// var self = this;
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// self._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.imapMarkAnswered = function(options, callback) {
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// var self = this;
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// self._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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// //
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// // SMTP Apis
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// //
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// /**
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// * Send an email client side via STMP.
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// */
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// EmailDAO.prototype.encryptedSend = function(email, callback) {
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// var self = this,
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// invalidRecipient;
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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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// _.each(email.to, function(i) {
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// if (!util.validateEmailAddress(i.address)) {
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// invalidRecipient = i.address;
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// }
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// });
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// if (invalidRecipient) {
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// callback({
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// errMsg: 'Invalid recipient: ' + invalidRecipient
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// });
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// return;
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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({
|
|
// 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;
|
|
}); |