framework/mail.js at master · JavaScriptIOT/framework · GitHub

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// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to permit

// persons to whom the Software is furnished to do so, subject to the

// following conditions:

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN

// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

// USE OR OTHER DEALINGS IN THE SOFTWARE.

/**

* @module FrameworkMail

* @version 2.9.4

'use strict';

const Net = require('net');

const Tls = require('tls');

const Fs = require('fs');

const CRLF = '\r\n';

const REG_ESMTP = /\besmtp\b/i;

const REG_STATE = /\d+/;

const REG_WINLINE = /\r\n/g;

const REG_NEWLINE = /\n/g;

const REG_AUTH = /(AUTH LOGIN|AUTH PLAIN)/i;

const EMPTYARRAY = [];

var INDEXSENDER = 0;

var INDEXATTACHMENT = 0;

if (!global.framework_utils)

global.framework_utils = require('./utils');

const BUF_CRLF = framework_utils.createBuffer(CRLF);

const CONCAT = [null, null];

/**

* Mailer

* @class

* @property {Boolean} debug Debug mode (true/false).

function Mailer() {

this.debug = false;

this.Message = Message;

this.Mail = Message;

this.connections = {};

this.$events = {};

}

Mailer.prototype.emit = function(name, a, b, c, d, e, f, g) {

var evt = this.$events[name];

if (evt) {

var clean = false;

for (var i = 0, length = evt.length; i < length; i++) {

if (evt[i].$once)

clean = true;

evt[i].call(this, a, b, c, d, e, f, g);

}

if (clean) {

evt = evt.remove(n => n.$once);

if (evt.length)

this.$events[name] = evt;

else

this.$events[name] = undefined;

}

return this;

};

Mailer.prototype.on = function(name, fn) {

if (this.$events[name])

this.$events[name].push(fn);

else

this.$events[name] = [fn];

return this;

};

Mailer.prototype.once = function(name, fn) {

fn.$once = true;

return this.on(name, fn);

};

Mailer.prototype.removeListener = function(name, fn) {

var evt = this.$events[name];

if (evt) {

evt = evt.remove(n => n === fn);

if (evt.length)

this.$events[name] = evt;

else

this.$events[name] = undefined;

}

return this;

};

Mailer.prototype.removeAllListeners = function(name) {

if (name)

this.$events[name] = undefined;

else

this.$events = {};

return this;

};

/**

* Create Mail Message

* @param {String} subject

* @param {String} body

* @return {MailMessage}

Mailer.prototype.create = function(subject, body) {

return new Message(subject, body);

};

/**

* Message send callback

* @callback ResolveMxCallback

* @param {Error} err Error handling.

* @param {Socket} socket Net socket.

/**

* Mail Message

* @param {String} subject

* @param {String} body

* @property {String} subject

* @property {String} body

function Message(subject, body) {

this.subject = subject || '';

this.body = body || '';

this.files;

this.addressTo = [];

this.addressReply;

this.addressCC;

this.addressBCC;

this.addressFrom = { name: '', address: '' };

this.closed = false;

this.tls = false;

this.$callback;

// Supports (but it's hidden):

// this.headers;

// this.$unsubscribe;

}

Message.prototype.unsubscribe = function(url) {

var tmp = url.substring(0, 6);

this.$unsubscribe = tmp === 'http:/' || tmp === 'https:' ? '<' + url + '>' : '<mailto:' + url + '>';

return this;

};

Message.prototype.callback = function(fn) {

this.$callback = fn;

return this;

};

Message.prototype.sender = function(address, name) {

return this.from(address, name);

};

Message.prototype.from = function(address, name) {

if (address[address.length - 1] === '>') {

var index = address.indexOf('<');

name = address.substring(0, index - 1);

address = address.substring(index + 1, address.length - 1);

}

this.addressFrom.name = name || '';

this.addressFrom.address = address;

return this;

};

Message.prototype.to = function(address, name, clear) {

if (typeof(name) === 'boolean') {

clear = name;

name = undefined;

}

if (address[address.length - 1] === '>') {

var index = address.indexOf('<');

name = address.substring(0, index - 1);

address = address.substring(index + 1, address.length - 1);

}

if (clear)

this.addressTo = [];

if (name)

this.addressTo.push({ email: address, name: name });

else

this.addressTo.push(address);

return this;

};

Message.prototype.cc = function(address, name, clear) {

if (typeof(name) === 'boolean') {

clear = name;

name = undefined;

}

if (address[address.length - 1] === '>') {

var index = address.indexOf('<');

name = address.substring(0, index - 1);

address = address.substring(index + 1, address.length - 1);

}

if (clear || !this.addressCC)

this.addressCC = [];

if (name)

this.addressCC.push({ email: address, name: name });

else

this.addressCC.push(address);

return this;

};

Message.prototype.bcc = function(address, clear) {

if (clear || !this.addressBCC)

this.addressBCC = [];

this.addressBCC.push(address);

return this;

};

Message.prototype.reply = function(address, clear) {

if (clear || !this.addressReply)

this.addressReply = [];

this.addressReply.push(address);

return this;

};

Message.prototype.attachment = function(filename, name) {

!name && (name = framework_utils.getName(filename));

var extension = framework_utils.getExtension(name);

!this.files && (this.files = []);

this.files.push({ name: name, filename: filename, type: framework_utils.getContentType(extension), extension: extension });

return this;

};

/**

* Clears a timeout for sending emails (if the email is sent through the F.onMail)

* @return {Message}

Message.prototype.manually = function() {

this.$sending && clearImmediate(this.$sending);

return this;

};

/**

* Adds an inline attachment.

* Inline attachments are exactly like normal attachments except that they are represented with the 'Content-ID' (cid)

* which can be referenced in the email's html body. For example an inline attachments (image) with a contentId of 'AB435BH'

* can be used inside the html body as "<img src='cid:AB435BH'>". An enabled web client then can render and show the embedded image.

* @param {String} filename Filename with extension (e.g. '/local/path/123.jpg')

* @param {String} name the optional filename (e.g. '123.jpg')

* @param {String} contentId the Content-ID (e.g. 'AB435BH'), must be unique across the email

* @returns {Message}

Message.prototype.attachmentInline = function(filename, name, contentId) {

!name && (name = framework_utils.getName(filename));

!this.files && (this.files = []);

var extension = framework_utils.getExtension(name);

this.files.push({ name: name, filename: filename, type: framework_utils.getContentType(extension), disposition: 'inline', contentId: contentId, extension: extension });

return this;

};

Message.prototype.send2 = function(callback) {

var opt = F.temporary['mail-settings'];

if (!opt) {

var config = F.config['mail-smtp-options'];

config && (opt = config);

F.temporary['mail-settings'] = opt || {};

}

mailer.send(F.config['mail-smtp'], opt, this, callback);

return this;

};

Message.prototype.send = function(smtp, options, callback) {

mailer.send(smtp, options, this, callback);

return this;

};

Mailer.prototype.switchToTLS = function(obj, options) {

var self = this;

obj.tls = true;

obj.socket.removeAllListeners();

var opt = framework_utils.copy(options.tls, { socket: obj.socket, host: obj.socket.$host, ciphers: 'SSLv3' });

obj.socket2 = Tls.connect(opt, () => self.$send(obj, options, true));

obj.socket2.on('error', function(err) {

mailer.destroy(obj);

self.closed = true;

self.callback && self.callback(err);

self.callback = null;

if (obj.try || err.stack.indexOf('ECONNRESET') !== -1)

return;

mailer.$events.error && mailer.emit('error', err, obj);

});

obj.socket2.on('clientError', function(err) {

mailer.destroy(obj);

self.callback && self.callback(err);

self.callback = null;

mailer.$events.error && !obj.try && mailer.emit('error', err, obj);

});

obj.socket2.on('connect', () => !options.secure && self.$send(obj, options));

};

Mailer.prototype.destroy = function(obj) {

if (obj.destroyed)

return this;

obj.destroyed = true;

obj.closed = true;

if (obj.socket) {

obj.socket.removeAllListeners();

obj.socket.end();

obj.socket.destroy();

obj.socket = null;

}

if (obj.socket2) {

obj.socket2.removeAllListeners();

obj.socket2.end();

obj.socket2.destroy();

obj.socket2 = null;

}

delete this.connections[obj.id];

return this;

};

const ATTACHMENT_SO = { encoding: 'base64' };

Mailer.prototype.$writeattachment = function(obj) {

var attachment = obj.files ? obj.files.shift() : false;

if (!attachment) {

mailer.$writeline(obj, '--' + obj.boundary + '--', '', '.');

obj.messagecallback && obj.messagecallback(null, obj.instance);

obj.messagecallback = null;

return this;

}

var name = attachment.name;

var stream = Fs.createReadStream(attachment.filename, ATTACHMENT_SO);

var message = [];

var extension = attachment.extension;

var isCalendar = extension === 'ics';

message.push('--' + obj.boundary);

if (!isCalendar) {

if (attachment.contentId) {

message.push('Content-Disposition: inline; filename="' + name + '"');

message.push('Content-ID: <' + attachment.contentId + '>');

} else

message.push('Content-Disposition: attachment; filename="' + name + '"');

}

message.push('Content-Type: ' + attachment.type + ';' + (isCalendar ? ' charset="utf-8"; method=REQUEST' : ''));

message.push('Content-Transfer-Encoding: base64');

message.push(CRLF);

mailer.$writeline(obj, message.join(CRLF));

stream.$mailer = mailer;

stream.$mailerobj = obj;

stream.on('data', writeattachment_data);

CLEANUP(stream, function() {

mailer.$writeline(obj, CRLF);

mailer.$writeattachment(obj);

});

return this;

};

function writeattachment_data(chunk) {

var length = chunk.length;

var count = 0;

var beg = 0;

while (count < length) {

count += 68;

if (count > length)

count = length;

this.$mailer.$writeline(this.$mailerobj, chunk.slice(beg, count).toString('base64'));

beg = count;

}

Mailer.prototype.try = function(smtp, options, callback) {

return this.send(smtp, options, undefined, callback);

};

Mailer.prototype.send2 = function(messages, callback) {

var opt = F.temporary['mail-settings'];

if (!opt) {

var config = F.config['mail-smtp-options'];

if (config) {

if (typeof(config) === 'object')

opt = config;

else

opt = config.toString().parseJSON();

}

if (!opt)

opt = {};

F.temporary['mail-settings'] = opt;

}

return this.send(F.config['mail-smtp'], opt, messages, callback);

};

Mailer.prototype.send = function(smtp, options, messages, callback) {

if (options instanceof Array) {

callback = messages;

messages = options;

options = {};

} else if (typeof(options) === 'function') {

callback = options;

options = {};

}

var self = this;

var id = 'abcdefghijkl' + (INDEXSENDER++);

self.connections[id] = {};

var obj = self.connections[id];

obj.id = id;

obj.try = messages === undefined;

obj.messages = obj.try ? EMPTYARRAY : messages instanceof Array ? messages : [messages];

obj.callback = callback;

obj.closed = false;

obj.message = null;

obj.files = null;

obj.count = 0;

obj.socket;

obj.tls = false;

obj.date = global.F ? global.F.datetime : new Date();

smtp = smtp || null;

if (options && options.secure && !options.port)

options.port = 465;

options = framework_utils.copy(options, { secure: false, port: 25, user: '', password: '', timeout: 10000, tls: null });

if (options.secure) {

var internal = framework_utils.copy(options);

internal.host = smtp;

obj.socket = Tls.connect(internal, () => mailer.$send(obj, options));

} else

obj.socket = Net.createConnection(options.port, smtp);

if (!smtp) {

var err = new Error('No SMTP server configuration. Mail message won\'t be sent.');

callback && callback(err);

F.error(err, 'mail-smtp');

return self;

}

obj.socket.$host = smtp;

obj.host = smtp.substring(smtp.lastIndexOf('.', smtp.lastIndexOf('.') - 1) + 1);

obj.socket.on('error', function(err) {

mailer.destroy(obj);

obj.callback && obj.callback(err);

obj.callback = null;

if (obj.try || err.stack.indexOf('ECONNRESET') !== -1)

return;

mailer.$events.error && mailer.emit('error', err, obj);

});

obj.socket.on('clientError', function(err) {

mailer.destroy(obj);

obj.callback && obj.callback(err);

obj.callback = null;

mailer.$events.error && !obj.try && mailer.emit('error', err, obj);

});

obj.socket.setTimeout(options.timeout || 8000, function() {

var err = new Error(framework_utils.httpStatus(408));

mailer.destroy(obj);

obj.callback && obj.callback(err);

obj.callback = null;

mailer.$events.error && !obj.try && mailer.emit('error', err, obj);

});

obj.socket.on('connect', () => !options.secure && mailer.$send(obj, options));

return self;

};

Mailer.prototype.$writemessage = function(obj, buffer) {

var self = this;

var msg = obj.messages.shift();

var message = [];

if (global.F)

global.F.stats.other.mail++;

obj.boundary = '--totaljs' + obj.date.getTime() + obj.count;

obj.files = msg.files;

obj.count++;

buffer.push('MAIL FROM: <' + msg.addressFrom.address + '>');

message.push('Message-ID: <total' + (INDEXATTACHMENT++) + '@WIN-t' + (INDEXATTACHMENT) + '>');

message.push('MIME-Version: 1.0');

message.push('From: ' + (msg.addressFrom.name ? unicode_encode(msg.addressFrom.name) + ' <' + msg.addressFrom.address + '>' : msg.addressFrom.address));

var length;

if (msg.headers) {

var headers = Object.keys(msg.headers);

for (var i = 0, length = headers.length; i < length; i++)

message.push(headers[i] + ': ' + msg.headers[headers[i]]);

}

length = msg.addressTo.length;

var builder = '';

var mail;

var item;

if (length) {

for (var i = 0; i < length; i++) {

item = msg.addressTo[i];

if (item instanceof Object)

mail = '<' + item.email + '>';

else

mail = '<' + item + '>';

buffer.push('RCPT TO: ' + mail);

builder += (builder ? ', ' : '') + (item instanceof Object ? unicode_encode(item.name) + ' ' : '') + mail;

}

message.push('To: ' + builder);

builder = '';

}

if (msg.addressCC) {

length = msg.addressCC.length;

for (var i = 0; i < length; i++) {

item = msg.addressCC[i];

if (item instanceof Object)

mail = '<' + item.email + '>';

else

mail = '<' + item + '>';

buffer.push('RCPT TO: ' + mail);

builder += (builder ? ', ' : '') + (item instanceof Object ? unicode_encode(item.name) + ' ' : '') + mail;

}

message.push('Cc: ' + builder);

builder = '';

}

if (msg.addressBCC) {

length = msg.addressBCC.length;

for (var i = 0; i < length; i++)

buffer.push('RCPT TO: <' + msg.addressBCC[i] + '>');

}

buffer.push('DATA');

buffer.push('');

message.push('Date: ' + obj.date.toUTCString());

message.push('Subject: ' + unicode_encode(msg.subject));

msg.$unsubscribe && message.push('List-Unsubscribe: ' + msg.$unsubscribe);

if (msg.addressReply) {

length = msg.addressReply.length;

for (var i = 0; i < length; i++)

builder += (builder !== '' ? ', ' : '') + '<' + msg.addressReply[i] + '>';

message.push('Reply-To: ' + builder);

builder = '';

}

message.push('Content-Type: multipart/mixed; boundary=' + obj.boundary);

message.push('');

message.push('--' + obj.boundary);

message.push('Content-Type: ' + (msg.body.indexOf('<') !== -1 && msg.body.lastIndexOf('>') !== -1 ? 'text/html' : 'text/plain') + '; charset=utf-8');

message.push('Content-Transfer-Encoding: base64');

message.push('');

message.push(prepareBASE64(framework_utils.createBuffer(msg.body.replace(REG_WINLINE, '\n').replace(REG_NEWLINE, CRLF)).toString('base64')));

obj.message = message.join(CRLF);

obj.messagecallback = msg.$callback;

obj.instance = msg;

message = null;

return self;

};

Mailer.prototype.$writeline = function(obj) {

if (obj.closed)

return false;

var socket = obj.socket2 ? obj.socket2 : obj.socket;

for (var i = 1; i < arguments.length; i++) {

var line = arguments[i];

if (line) {

mailer.debug && console.log('SEND', line);

socket.write(line + CRLF);

}

return true;

};

Mailer.prototype.$send = function(obj, options, autosend) {

var self = this;

var buffer = [];

var isAuthorized = false;

var isAuthorization = false;

var command = '';

var auth = [];

var socket = obj.socket2 ? obj.socket2 : obj.socket;

var host = obj.host;

var line = null;

var isAttach = !options.tls || (obj.tls && options.tls);

isAttach && mailer.$events.send && mailer.emit('send', obj);

socket.setEncoding('utf8');

socket.on('end', function() {

mailer.destroy(obj);

obj.callback && obj.callback();

obj.callback = null;

line = null;

});

socket.on('data', function(data) {

if (obj.closed)

return;

while (true) {

var index = data.indexOf(BUF_CRLF);

if (index === -1) {

if (line) {

CONCAT[0] = line;

CONCAT[1] = data;

line = Buffer.concat(CONCAT);

} else

line = data;

break;

}

var tmp = data.slice(0, index).toString('utf8');

data = data.slice(index + BUF_CRLF.length);

tmp && socket && socket.emit('line', tmp);

}

});

socket.on('line', function(line) {

line = line.toUpperCase();

mailer.debug && console.log('<---', line);

var code = +line.match(REG_STATE)[0];

if (code === 250 && !isAuthorization) {

if (REG_AUTH.test(line) && ((options.user && options.password) || options.xoauth2)) {

isAuthorization = true;

if (options.xoauth2 && line.indexOf('XOAUTH2') !== -1)

auth.push('AUTH XOAUTH2 ' + options.xoauth2);

else if (line.lastIndexOf('XOAUTH') === -1) {

auth.push('AUTH LOGIN');

auth.push(framework_utils.createBuffer(options.user).toString('base64'));

auth.push(framework_utils.createBuffer(options.password).toString('base64'));

} else

auth.push('AUTH PLAIN ' + framework_utils.createBuffer('\0'+ options.user + '\0' + options.password).toString('base64'));

}

// help

if (line.substring(3, 4) === '-')

return;

if (!isAuthorized && isAuthorization) {

isAuthorized = true;

code = 334;

}

switch (code) {

case 220:

if (obj.isTLS) {

mailer.switchToTLS(obj, options);

return;

}

command = obj.isTLS || (options.user && options.password) || REG_ESMTP.test(line) ? 'EHLO' : 'HELO';

mailer.$writeline(obj, command + ' ' + host);

break;

case 250: // OPERATION

case 251: // FORWARD

case 235: // VERIFY

case 999: // Total.js again

mailer.$writeline(obj, buffer.shift());

if (buffer.length)

return;

// NEW MESSAGE

if (obj.messages.length) {

mailer.$writemessage(obj, buffer);

mailer.$writeline(obj, buffer.shift());

} else {

// end

mailer.$writeline(obj, 'QUIT');

}

return;

case 221: // BYE

mailer.destroy(obj);

obj.callback && obj.callback(null, obj.try ? true : obj.count);

obj.callback = null;

return;

case 334: // LOGIN

if (!self.tls && !obj.isTLS && options.tls) {

obj.isTLS = true;

mailer.$writeline(obj, 'STARTTLS');

return;

}

var value = auth.shift();

if (value) {

mailer.$writeline(obj, value);

} else {

var err = new Error('Forbidden.');

mailer.destroy(obj);

obj.callback && obj.callback(err);

obj.callback = null;

mailer.$events.error && !obj.try && mailer.emit('error', err, obj);

}

return;

case 354:

mailer.$writeline(obj, obj.message);

mailer.$writeattachment(obj);

obj.message = null;

return;

default:

if (code < 400)

return;

var err = new Error(line);

mailer.$events.error && !obj.try && mailer.emit('error', err, obj);

obj.messagecallback && obj.messagecallback(err, obj.instance);

obj.messagecallback = null;

if (obj.message) {

// a problem

buffer = [];

obj.count--;

socket.emit('line', '999 TRY NEXT MESSAGE');

} else {

mailer.destroy(obj);

obj.callback && obj.callback(err);

obj.callback = null;

}

return;

}

});

autosend && self.$writeline(obj, 'EHLO ' + host);

};

Mailer.prototype.restart = function() {

var self = this;

self.removeAllListeners();

self.debug = false;

INDEXSENDER = 0;

INDEXATTACHMENT = 0;

};

// Split Base64 to lines with 68 characters

function prepareBASE64(value) {

var index = 0;

var output = '';

var length = value.length;

while (index < length) {

var max = index + 68;

if (max > length)

max = length;

output += value.substring(index, max) + CRLF;

index = max;

}

return output;

}

function unicode_encode(val) {

return val ? '=?utf-8?B?' + framework_utils.createBuffer(val.toString()).toString('base64') + '?=' : '';

}

// ======================================================

// EXPORTS

// ======================================================

var mailer = new Mailer();

module.exports = mailer;

framework/mail.js at master · JavaScriptIOT/framework · GitHub

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