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svrjs-blog-newsletter/cronjob/node_modules/nodemailer/lib/mailer/index.js
2024-05-26 22:54:55 +02:00

429 lines
14 KiB
JavaScript

'use strict';
const EventEmitter = require('events');
const shared = require('../shared');
const mimeTypes = require('../mime-funcs/mime-types');
const MailComposer = require('../mail-composer');
const DKIM = require('../dkim');
const httpProxyClient = require('../smtp-connection/http-proxy-client');
const util = require('util');
const urllib = require('url');
const packageData = require('../../package.json');
const MailMessage = require('./mail-message');
const net = require('net');
const dns = require('dns');
const crypto = require('crypto');
/**
* Creates an object for exposing the Mail API
*
* @constructor
* @param {Object} transporter Transport object instance to pass the mails to
*/
class Mail extends EventEmitter {
constructor(transporter, options, defaults) {
super();
this.options = options || {};
this._defaults = defaults || {};
this._defaultPlugins = {
compile: [(...args) => this._convertDataImages(...args)],
stream: []
};
this._userPlugins = {
compile: [],
stream: []
};
this.meta = new Map();
this.dkim = this.options.dkim ? new DKIM(this.options.dkim) : false;
this.transporter = transporter;
this.transporter.mailer = this;
this.logger = shared.getLogger(this.options, {
component: this.options.component || 'mail'
});
this.logger.debug(
{
tnx: 'create'
},
'Creating transport: %s',
this.getVersionString()
);
// setup emit handlers for the transporter
if (typeof this.transporter.on === 'function') {
// deprecated log interface
this.transporter.on('log', log => {
this.logger.debug(
{
tnx: 'transport'
},
'%s: %s',
log.type,
log.message
);
});
// transporter errors
this.transporter.on('error', err => {
this.logger.error(
{
err,
tnx: 'transport'
},
'Transport Error: %s',
err.message
);
this.emit('error', err);
});
// indicates if the sender has became idle
this.transporter.on('idle', (...args) => {
this.emit('idle', ...args);
});
}
/**
* Optional methods passed to the underlying transport object
*/
['close', 'isIdle', 'verify'].forEach(method => {
this[method] = (...args) => {
if (typeof this.transporter[method] === 'function') {
if (method === 'verify' && typeof this.getSocket === 'function') {
this.transporter.getSocket = this.getSocket;
this.getSocket = false;
}
return this.transporter[method](...args);
} else {
this.logger.warn(
{
tnx: 'transport',
methodName: method
},
'Non existing method %s called for transport',
method
);
return false;
}
};
});
// setup proxy handling
if (this.options.proxy && typeof this.options.proxy === 'string') {
this.setupProxy(this.options.proxy);
}
}
use(step, plugin) {
step = (step || '').toString();
if (!this._userPlugins.hasOwnProperty(step)) {
this._userPlugins[step] = [plugin];
} else {
this._userPlugins[step].push(plugin);
}
return this;
}
/**
* Sends an email using the preselected transport object
*
* @param {Object} data E-data description
* @param {Function?} callback Callback to run once the sending succeeded or failed
*/
sendMail(data, callback = null) {
let promise;
if (!callback) {
promise = new Promise((resolve, reject) => {
callback = shared.callbackPromise(resolve, reject);
});
}
if (typeof this.getSocket === 'function') {
this.transporter.getSocket = this.getSocket;
this.getSocket = false;
}
let mail = new MailMessage(this, data);
this.logger.debug(
{
tnx: 'transport',
name: this.transporter.name,
version: this.transporter.version,
action: 'send'
},
'Sending mail using %s/%s',
this.transporter.name,
this.transporter.version
);
this._processPlugins('compile', mail, err => {
if (err) {
this.logger.error(
{
err,
tnx: 'plugin',
action: 'compile'
},
'PluginCompile Error: %s',
err.message
);
return callback(err);
}
mail.message = new MailComposer(mail.data).compile();
mail.setMailerHeader();
mail.setPriorityHeaders();
mail.setListHeaders();
this._processPlugins('stream', mail, err => {
if (err) {
this.logger.error(
{
err,
tnx: 'plugin',
action: 'stream'
},
'PluginStream Error: %s',
err.message
);
return callback(err);
}
if (mail.data.dkim || this.dkim) {
mail.message.processFunc(input => {
let dkim = mail.data.dkim ? new DKIM(mail.data.dkim) : this.dkim;
this.logger.debug(
{
tnx: 'DKIM',
messageId: mail.message.messageId(),
dkimDomains: dkim.keys.map(key => key.keySelector + '.' + key.domainName).join(', ')
},
'Signing outgoing message with %s keys',
dkim.keys.length
);
return dkim.sign(input, mail.data._dkim);
});
}
this.transporter.send(mail, (...args) => {
if (args[0]) {
this.logger.error(
{
err: args[0],
tnx: 'transport',
action: 'send'
},
'Send Error: %s',
args[0].message
);
}
callback(...args);
});
});
});
return promise;
}
getVersionString() {
return util.format('%s (%s; +%s; %s/%s)', packageData.name, packageData.version, packageData.homepage, this.transporter.name, this.transporter.version);
}
_processPlugins(step, mail, callback) {
step = (step || '').toString();
if (!this._userPlugins.hasOwnProperty(step)) {
return callback();
}
let userPlugins = this._userPlugins[step] || [];
let defaultPlugins = this._defaultPlugins[step] || [];
if (userPlugins.length) {
this.logger.debug(
{
tnx: 'transaction',
pluginCount: userPlugins.length,
step
},
'Using %s plugins for %s',
userPlugins.length,
step
);
}
if (userPlugins.length + defaultPlugins.length === 0) {
return callback();
}
let pos = 0;
let block = 'default';
let processPlugins = () => {
let curplugins = block === 'default' ? defaultPlugins : userPlugins;
if (pos >= curplugins.length) {
if (block === 'default' && userPlugins.length) {
block = 'user';
pos = 0;
curplugins = userPlugins;
} else {
return callback();
}
}
let plugin = curplugins[pos++];
plugin(mail, err => {
if (err) {
return callback(err);
}
processPlugins();
});
};
processPlugins();
}
/**
* Sets up proxy handler for a Nodemailer object
*
* @param {String} proxyUrl Proxy configuration url
*/
setupProxy(proxyUrl) {
let proxy = urllib.parse(proxyUrl);
// setup socket handler for the mailer object
this.getSocket = (options, callback) => {
let protocol = proxy.protocol.replace(/:$/, '').toLowerCase();
if (this.meta.has('proxy_handler_' + protocol)) {
return this.meta.get('proxy_handler_' + protocol)(proxy, options, callback);
}
switch (protocol) {
// Connect using a HTTP CONNECT method
case 'http':
case 'https':
httpProxyClient(proxy.href, options.port, options.host, (err, socket) => {
if (err) {
return callback(err);
}
return callback(null, {
connection: socket
});
});
return;
case 'socks':
case 'socks5':
case 'socks4':
case 'socks4a': {
if (!this.meta.has('proxy_socks_module')) {
return callback(new Error('Socks module not loaded'));
}
let connect = ipaddress => {
let proxyV2 = !!this.meta.get('proxy_socks_module').SocksClient;
let socksClient = proxyV2 ? this.meta.get('proxy_socks_module').SocksClient : this.meta.get('proxy_socks_module');
let proxyType = Number(proxy.protocol.replace(/\D/g, '')) || 5;
let connectionOpts = {
proxy: {
ipaddress,
port: Number(proxy.port),
type: proxyType
},
[proxyV2 ? 'destination' : 'target']: {
host: options.host,
port: options.port
},
command: 'connect'
};
if (proxy.auth) {
let username = decodeURIComponent(proxy.auth.split(':').shift());
let password = decodeURIComponent(proxy.auth.split(':').pop());
if (proxyV2) {
connectionOpts.proxy.userId = username;
connectionOpts.proxy.password = password;
} else if (proxyType === 4) {
connectionOpts.userid = username;
} else {
connectionOpts.authentication = {
username,
password
};
}
}
socksClient.createConnection(connectionOpts, (err, info) => {
if (err) {
return callback(err);
}
return callback(null, {
connection: info.socket || info
});
});
};
if (net.isIP(proxy.hostname)) {
return connect(proxy.hostname);
}
return dns.resolve(proxy.hostname, (err, address) => {
if (err) {
return callback(err);
}
connect(Array.isArray(address) ? address[0] : address);
});
}
}
callback(new Error('Unknown proxy configuration'));
};
}
_convertDataImages(mail, callback) {
if ((!this.options.attachDataUrls && !mail.data.attachDataUrls) || !mail.data.html) {
return callback();
}
mail.resolveContent(mail.data, 'html', (err, html) => {
if (err) {
return callback(err);
}
let cidCounter = 0;
html = (html || '')
.toString()
.replace(/(<img\b[^<>]{0,1024} src\s{0,20}=[\s"']{0,20})(data:([^;]+);[^"'>\s]+)/gi, (match, prefix, dataUri, mimeType) => {
let cid = crypto.randomBytes(10).toString('hex') + '@localhost';
if (!mail.data.attachments) {
mail.data.attachments = [];
}
if (!Array.isArray(mail.data.attachments)) {
mail.data.attachments = [].concat(mail.data.attachments || []);
}
mail.data.attachments.push({
path: dataUri,
cid,
filename: 'image-' + ++cidCounter + '.' + mimeTypes.detectExtension(mimeType)
});
return prefix + 'cid:' + cid;
});
mail.data.html = html;
callback();
});
}
set(key, value) {
return this.meta.set(key, value);
}
get(key) {
return this.meta.get(key);
}
}
module.exports = Mail;