function startDNSQueries(params){
let domain = params.email.split(/[@]/).splice(-1)[0].toLowerCase()
logger.info("Resolving DNS... " + domain)
dns.resolveMx(domain,(err,addresses) => {
if (err || (typeof addresses === 'undefined')) {
params.callback(err, { success: false, info: 'Domain not found', code: infoCodes.domainNotFound });
}
else if (addresses && addresses.length <= 0) {
params.callback(null, { success: false, info: 'No MX Records', code: infoCodes.noMxRecords });
}
else{
params.addresses = addresses
// Find the lowest priority mail server
let priority = 10000,
lowestPriorityIndex = 0
for (let i = 0 ; i < addresses.length ; i++) {
if (addresses[i].priority < priority) {
priority = addresses[i].priority
lowestPriorityIndex = i
logger.info('MX Records ' + JSON.stringify(addresses[i]))
}
}
params.options.smtp = addresses[lowestPriorityIndex].exchange
logger.info("Choosing " + params.options.smtp + " for connection")
beginSMTPQueries(params)
}
})
}
dns.resolve4(params[0], function (err, addresses) {
var message = 'A: ';
message += err || JSON.stringify(addresses, null, 2).replace(/[\r\n]/g, '');
dns.resolveMx(params[0], function (err, addresses) {
message += '\nMX: ';
message += err || JSON.stringify(addresses, null, 2).replace(/[\r\n]/g, '');
dns.resolveTxt(params[0], function (err, addresses) {
message += '\nTxt: ';
message += err || JSON.stringify(addresses, null, 2).replace(/[\r\n]/g, '');
dns.resolveSrv(params[0], function (err, addresses) {
message += '\nSrv: ';
message += err || JSON.stringify(addresses, null, 2).replace(/[\r\n]/g, '');
dns.resolveNs(params[0], function (err, addresses) {
message += '\nNS: ';
message += err || JSON.stringify(addresses, null, 2).replace(/[\r\n]/g, '');
dns.resolveCname(params[0], function (err, addresses) {
message += '\nCName: ';
message += err || JSON.stringify(addresses, null, 2).replace(/[\r\n]/g, '');
stanza.c('body').t(message);
client.send(stanza);
});
});
});
});
});
});
dns.resolveNs(domain, function (err, addresses) {
//if (err) throw err;
if (!err) {
//console.log('NS: ' + (addresses));
for (var x in addresses) { console.log(addresses[x]) }
}
dns.resolveMx(domain, function (err, addresses) {
//if (err) throw err;
if (!err) {
addresses.forEach(function (a) {
console.log(a);
});
}
// adds.forEach(function (a) {
// dns.reverse(a, function (err, domains) {
// if (err) {
// console.log('reverse for ' + a + ' failed: ' + err.message);
// } else {
// console.log('reverse for ' + a + ': ' + domains);
// //JSON.stringify(domains));
// }
// });
// });
});
});
/**
* connect to domain by Mx record
*/
function connectMx(domain, callback) {
dns.resolveMx(domain, function(err, data) {
if (err)
return callback(err);
data.sort(function(a, b) {return a.priority < b. priority});
logger.debug('mx resolved: ', data);
if (!data || data.length == 0)
return callback(new Error('can not resolve Mx of <' + domain + '>'));
function tryConnect(i) {
if (i >= data.length) return callback(new Error('can not connect to any SMTP server'));
var sock = tcp.createConnection(25, data[i].exchange);
sock.on('error', function(err) {
logger.error('Error on connectMx for: ', data[i], err);
tryConnect(++i);
});
sock.on('connect', function() {
logger.debug("MX connection created: ", data[i].exchange);
sock.removeAllListeners('error');
callback(null, sock);
});
};
tryConnect(0);
});
}
prepareDns(DnsServer.testResolveMX(prio, name), function() {
dns.resolveMx("vertx.io", function(err, records) {
vassert.assertTrue("Unexpected error: " + err, err === null);
vassert.assertTrue("Unexpected priority: " + records[0], prio == records[0].priority);
vassert.assertTrue("Unexpected exchange: " + records[0], name === records[0].exchange);
vassert.testComplete();
});
});
var validateViaDNS = function () {
dnslib.resolveMx(domain, (function(err, addresses){
if(err || !addresses || !addresses.length){
this.server.emit(validationFailedEvent, email);
return callback(new Error(err && err.SMTPResponse || dnsErrorMessage));
}
validateViaLocal.call(this);
}).bind(this));
};
DirectMailer.prototype._resolveMx = function(domain, callback){
// Do not try to resolve the domain name if it is an IP address
if(net.isIP(domain)){
return callback(null, [{'priority': 10, 'exchange': domain}]);
}
dns.resolveMx(domain, callback);
};
function domainVerify() {
dns.resolveMx(
self.name,
this.parallel()
);
dns.resolveCname(
self.name,
this.parallel()
);
},
return new Promise(function (fulfill, reject) {
dns.resolveMx(host, function (err, addresses) {
if (err) {
reject(err);
} else if (addresses.length === 0) {
reject(new Error('MX Record nonexistent'));
} else {
fulfill();
}
});
})
DirectMailer.prototype._resolveMx = function(domain, callback) {
domain = domain.replace(/[\[\]]/g, '');
// Do not try to resolve the domain name if it is an IP address
if (net.isIP(domain)) {
return callback(null, [{
'priority': 0,
'exchange': domain
}]);
}
dns.resolveMx(domain, function(err, list) {
if (err) {
if (err.code === 'ENODATA') {
// fallback to A
dns.resolve4(domain, function(err, list) {
if (err) {
if (err.code === 'ENODATA') {
// fallback to AAAA
dns.resolve6(domain, function(err, list) {
if (err) {
return callback(err);
}
// return the first resolved Ipv6 with priority 0
return callback(null, [].concat(list || []).map(function(entry) {
return {
'priority': 0,
'exchange': entry
};
}).slice(0, 1));
});
} else {
callback(err);
}
return;
}
// return the first resolved Ipv4 with priority 0
return callback(null, [].concat(list || []).map(function(entry) {
return {
'priority': 0,
'exchange': entry
};
}).slice(0, 1));
});
} else {
callback(err);
}
return;
}
callback(null, list);
});
};
function getMX(cb){
dns.resolveMx("gmail.com",function(err,mx){
var highest;
for(var i = 0; i < mx.length; i++){
if(!highest || highest.priority > mx[i].priority){
highest = mx[i];
}
}
cb(highest.exchange);
});
}
TEST(function test_resolveMx_failure(done) {
var req = dns.resolveMx('something.invalid', function(err, result) {
assert.ok(err instanceof Error);
assert.strictEqual(err.errno, 'ENOTFOUND');
assert.strictEqual(result, undefined);
done();
});
checkWrap(req);
});
function getexchange (domain, cb) {
dns.resolveMx(domain, function (err, addresses) {
if (err) return cb(err);
var resolver = {}
addresses.reverse();
for (var i=0;i<addresses.length;i++) {
resolver[addresses[i].priority] = addresses[i].exchange;
}
var keys = Object.keys(resolver)
keys.sort()
cb(null, resolver[keys[0]])
})
}
var validateViaDNS = function () {
try {
dns.resolveMx(domain, (function (err, addresses) {
if (err || !addresses || !addresses.length) {
_this.emit(validationFailedEvent, email);
return reject(new Error(dnsErrorMessage));
}
validateViaLocal();
}));
} catch (e) {
return reject(e);
}
};
var validateViaDNS = function () {
if(!self.server.options.disableDNSValidation) {
dnslib.resolveMx(domain, function(err, addresses){
if(err || !addresses || !addresses.length){
self.server.emit(validationFailedEvent, email);
return callback(new Error(dnsErrorMessage));
}
return validateViaLocal();
});
} else {
return validateViaLocal();
}
};
namespace.run(function () {
namespace.set('test', 707);
t.equal(namespace.get('test'), 707, "state has been mutated");
dns.resolveMx('newrelic.com', function (err, addresses) {
t.notOk(err, "lookup succeeded");
t.ok(addresses.length > 0, "some results were found");
t.equal(namespace.get('test'), 707,
"mutated state has persisted to dns.resolveMx's callback");
t.end();
});
});
TEST(function test_resolveMx_failure(done) {
dnsPromises.resolveMx(addresses.INVALID_HOST)
.then(common.mustNotCall())
.catch(common.expectsError({ errno: 'ENOTFOUND' }));
const req = dns.resolveMx(addresses.INVALID_HOST, function(err, result) {
assert.ok(err instanceof Error);
assert.strictEqual(err.errno, 'ENOTFOUND');
assert.strictEqual(result, undefined);
done();
});
checkWrap(req);
});
SMTPServerConnection.prototype._onCommandMAIL = function(mail){
var match, email, domain;
if(!this.hostNameAppearsAs){
return this.client.send("503 5.5.1 Error: send HELO/EHLO first");
}
if(this.server.options.requireAuthentication && !this.authentication.authenticated){
return this.client.send("530 5.5.1 Authentication Required");
}
if(this.envelope.from){
return this.client.send("503 5.5.1 Error: nested MAIL command");
}
if(!(match = mail.match(/^from\:\s*<([^@>]+\@([^@>]+))>$/i))){
return this.client.send("501 5.1.7 Bad sender address syntax");
}
email = match[1] || "";
domain = (match[2] || "").toLowerCase();
dnslib.resolveMx(domain, (function(err, addresses){
if(err || !addresses || !addresses.length){
return this.client.send("450 4.1.8 <"+email+">: Sender address rejected: Domain not found");
}
if(this.server.options.validateSender){
this.server.emit("validateSender", this.envelope, email, (function(err){
if(err){
return this.client.send("550 5.1.1 <"+email+">: Sender address rejected: User unknown in local sender table");
}
// force domain part to be lowercase
email = email.substr(0, email.length - domain.length) + domain;
this.envelope.from = email;
this.client.send("250 2.1.0 Ok");
}).bind(this));
}else{
// force domain part to be lowercase
email = email.substr(0, email.length - domain.length) + domain;
this.envelope.from = email;
this.client.send("250 2.1.0 Ok");
}
}).bind(this));
};
SMTPServerConnection.prototype._onCommandRCPT = function(mail){
var match, email, domain;
if(!this.envelope.from){
return this.client.send("503 5.5.1 Error: need MAIL command");
}
if(!(match = mail.match(/^to\:\s*<([^@>]+\@([^@>]+))>$/i))){
return this.client.send("501 5.1.7 Bad recipient address syntax");
}
email = match[1] || "";
domain = (match[2] || "").toLowerCase();
dnslib.resolveMx(domain, (function(err, addresses){
if(err || !addresses || !addresses.length){
return this.client.send("450 4.1.8 <"+email+">: Recipient address rejected: Domain not found");
}
if(this.server.options.validateRecipients){
this.server.emit("validateRecipient", this.envelope, email, (function(err){
if(err){
return this.client.send("550 5.1.1 <"+email+">: Recipient address rejected: User unknown in local recipient table");
}
// force domain part to be lowercase
email = email.substr(0, email.length - domain.length) + domain;
// add to recipients list
if(this.envelope.to.indexOf(email)<0){
this.envelope.to.push(email);
}
this.client.send("250 2.1.0 Ok");
}).bind(this));
}else{
// force domain part to be lowercase
email = email.substr(0, email.length - domain.length) + domain;
// add to recipients list
if(this.envelope.to.indexOf(email)<0){
this.envelope.to.push(email);
}
this.client.send("250 2.1.0 Ok");
}
}).bind(this));
};
var get_smtp_servers = function(recipient, cb) {
var domain = recipient.replace(/.*@/, '');
dns.resolveMx(domain, function(err, addresses) {
if (err) return cb(err);
var hosts = [];
var sorted = addresses.sort(function(a, b){ return (a.priority > b.priority) });
sorted.forEach(function(host){
hosts.push(host.exchange);
});
cb(null, hosts);
});
};
exports.hook_mail = function(next, connection, params) {
var mail_from = params[0];
// Check for MAIL FROM without an @ first - ignore those here
if (!mail_from.host) {
return next();
}
var called_next = 0;
var timeout_id = 0;
var plugin = this;
var domain = mail_from.host;
var config = this.config.get('mail_from.is_resolvable.ini');
var timeout = config.general && (config.general['timeout'] || 60);
var timeout_msg = config.general && (config.general['timeout_msg'] || '');
// Just in case DNS never comes back (UDP), we should DENYSOFT.
timeout_id = setTimeout(function () {
plugin.loginfo('timed out when looking up ' + domain +
'\'s MX record. Disconnecting.');
called_next++;
return next(DENYSOFT, timeout_msg);
}, timeout * 1000);
dns.resolveMx(domain, function(err, addresses) {
if (called_next) {
// This happens when we've called next() from our plugin timeout
// handler, but we eventually get a response from DNS. We do not
// want to call next() again, so we just return.
return;
}
if (err && err.code != dns.NXDOMAIN && err.code != 'ENOTFOUND') {
plugin.logerror("DNS Error: " + err);
clearTimeout(timeout_id);
return next(DENYSOFT, "Temporary resolver error");
}
if (addresses && addresses.length) {
clearTimeout(timeout_id);
return next();
}
clearTimeout(timeout_id);
return next(DENYSOFT, "No MX for your FROM address");
});
}
this.get_smtp_servers = function(callback){
var domain = this.recipient.replace(/.*@/, '');
// console.log(domain);
dns.resolveMx(domain, function(err, addresses) {
if (err) return callback(err);
var hosts = [];
var sorted = addresses.sort(function(a, b){ return (a.priority > b.priority); });
sorted.forEach(function(host){
hosts.push(host.exchange);
});
callback(null, hosts);
});
};
TEST(function test_resolveMx(done) {
const req = dns.resolveMx('gmail.com', function(err, result) {
assert.ifError(err);
assert.ok(result.length > 0);
for (let i = 0; i < result.length; i++) {
const item = result[i];
assert.ok(item);
assert.strictEqual(typeof item, 'object');
assert.ok(item.exchange);
assert.strictEqual(typeof item.exchange, 'string');
assert.strictEqual(typeof item.priority, 'number');
}
done();
});
checkWrap(req);
});
TEST(function test_resolveMx(done) {
var req = dns.resolveMx('gmail.com', function(err, result) {
if (err) throw err;
assert.ok(result.length > 0);
for (var i = 0; i < result.length; i++) {
var item = result[i];
assert.ok(item);
assert.ok(typeof item === 'object');
assert.ok(item.exchange);
assert.ok(typeof item.exchange === 'string');
assert.ok(typeof item.priority === 'number');
}
done();
});
checkWrap(req);
});
/*
Resolve MX
@domain {String}
@callback {Function} :: callback(error, socket);
*/
/**
* Resolve MX record
* @param {String} domain Domain name.
* @param {ResolveMxCallback} callback Callback.
*/
function resolveMx(domain, callback) {
dns.resolveMx(domain, function(err, data) {
if (err) {
callback(err, data);
return;
}
if (!data || data.length === 0) {
callback(new Error(errors.resolve + domain));
return;
}
data.sort(function(a, b) {
return a.priority < b. priority;
});
function tryConnect(index) {
if (index >= data.length) {
callback(new Error(errors.connection));
return;
}
var sock = net.createConnection(25, data[index].exchange);
sock.on('error', function(err) {
tryConnect(++index);
});
sock.on('connect', function() {
sock.removeAllListeners('error');
callback(null, sock);
});
}
tryConnect(0);
});
}
module.exports = function isGmail(email, callback) {
if ((typeof email !== 'string') || !isEmail(email)) {
process.nextTick(function () {
callback(false);
});
} else {
var domain = email.split('@')[1];
if (~['gmail.com', 'google.com', 'googlemail.com'].indexOf(domain)) {
process.nextTick(function () {
callback(true);
});
} else {
dns.resolveMx(domain, function (err, result) {
callback(
err ? false : result.some(function (item) {
return item.exchange.match(/google(mail)?\.com$/i);
})
);
});
}
}
};
TEST(async function test_resolveMx(done) {
function validateResult(result) {
assert.ok(result.length > 0);
for (const item of result) {
assert.strictEqual(typeof item, 'object');
assert.ok(item.exchange);
assert.strictEqual(typeof item.exchange, 'string');
assert.strictEqual(typeof item.priority, 'number');
}
}
validateResult(await dnsPromises.resolveMx(addresses.MX_HOST));
const req = dns.resolveMx(addresses.MX_HOST, function(err, result) {
assert.ifError(err);
validateResult(result);
done();
});
checkWrap(req);
});
"use strict";var net=require("net");var tls=require("tls");var events=require("events");var dns=require("dns");var fs=require("fs");var path=require("path");var CRLF="\r\n";var UNDEFINED="undefined";var errors={notvalid:"E-mail address is not valid",resolve:"Cannot resolve MX of ",connection:"Cannot connect to any SMTP server."};function Mailer(){this.debug=false;this.Message=Message;this.Mail=Message}Mailer.prototype.__proto__=Object.create(events.EventEmitter.prototype,{constructor:{value:Mailer,enumberable:false}});Mailer.prototype.create=function(subject,body){return new Message(subject,body)};function resolveMx(domain,callback){dns.resolveMx(domain,function(err,data){if(err){callback(err,data);return}if(!data||data.length===0){callback(new Error(errors.resolve+domain));return}data.sort(function(a,b){return a.priority<b.priority});function tryConnect(index){if(index>=data.length){callback(new Error(errors.connection));return}var sock=net.createConnection(25,data[index].exchange);sock.on("error",function(err){tryConnect(++index)});sock.on("connect",function(){callback(null,sock)})}tryConnect(0)})}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.callback=null;this.closed=false}Message.prototype.sender=function(address,name){return this.from(address,name)};Message.prototype.from=function(address,name){if(!address.isEmail())throw new Error(errors.notvalid);var self=this;self.addressFrom.name=name||"";self.addressFrom.address=address;return self};Message.prototype.to=function(address){if(!address.isEmail())throw new Error(errors.notvalid);var self=this;self.addressTo.push(address);return self};Message.prototype.cc=function(address){if(!address.isEmail())throw new Error(errors.notvalid);var self=this;self.addressCC.push(address);return self};Message.prototype.bcc=function(address){if(!address.isEmail())throw new Error(errors.notvalid);var self=this;self.addressBCC.push(address);return self};Message.prototype.reply=function(address){if(!address.isEmail())throw new Error(errors.notvalid);var self=this;self.addressReply.push(address);return self};Message.prototype.attachment=function(filename,name){var self=this;if(name===undefined)name=path.basename(filename);self.files.push({name:name,filename:filename,contentType:framework_utils.getContentType(path.extname(name))});return self};Message.prototype.attachmentInline=function(filename,name,contentId){var self=this;if(name===undefined)name=path.basename(filename);self.files.push({name:name,filename:filename,contentType:utils.getContentType(path.extname(name)),disposition:"inline",contentId:contentId});return self};Message.prototype.send=function(smtp,options,fnCallback){var self=this;smtp=smtp||null;if(typeof options==="function"){var tmp=fnCallback;fnCallback=options;options=tmp}self.callback=fnCallback;options=framework_utils.copy(options,{secure:false,port:25,user:"",password:"",timeout:1e4});if(smtp===null||smtp===""){smtp=getHostName(self.addressFrom.address);resolveMx(smtp,function(err,socket){if(err){mailer.emit("error",err,self);if(fnCallback)fnCallback(err);return}socket.on("error",function(err){mailer.emit("error",err,self);if(fnCallback)fnCallback(err)});self._send(socket,options)});return self}var socket;if(options.secure){var internal=framework_utils.copy(options);internal.host=smtp;socket=tls.connect(internal,function(){self._send(this,options)})}else socket=net.createConnection(options.port,smtp);socket.on("error",function(err){socket.destroy();self.closed=true;if(err.stack.indexOf("ECONNRESET")!==-1)mailer.emit("error",err,self)});socket.on("clientError",function(err){mailer.emit("error",err,self)});socket.on("connect",function(){if(!options.secure)self._send(socket,options)});return self};Message.prototype._send=function(socket,options){var self=this;var command="";var buffer=[];var message=[];var host=getHostName(self.addressFrom.address);var date=new Date;var boundary="--totaljs"+date.getTime();var isAuthenticated=false;var isAuthorization=false;var authType="";var auth=[];var err=null;var ending=null;mailer.emit("send",self);socket.setTimeout(options.timeout||5e3,function(){self.closed=true;mailer.emit("error",new Error(framework_utils.httpStatus(408)),self);if(socket!==null)socket.destroy();socket=null});socket.setEncoding("utf8");var write=function(line){if(self.closed)return;if(mailer.debug)console.log("SEND",line);socket.write(line+CRLF)};buffer.push("MAIL FROM: <"+self.addressFrom.address+">");message.push("Message-ID: <"+GUID()+"@WIN-"+s4()+">");message.push("MIME-Version: 1.0");message.push("From: "+(self.addressFrom.name.length>0?unicode_encode(self.addressFrom.name)+" <"+self.addressFrom.address+">":self.addressFrom.address));var length=self.addressTo.length;var builder="";if(length>0){for(var i=0;i<length;i++){var mail="<"+self.addressTo[i]+">";buffer.push("RCPT TO: "+mail);builder+=(builder!==""?", ":"")+mail}message.push("To: "+builder);builder=""}length=self.addressCC.length;if(length>0){for(var i=0;i<length;i++){var mail="<"+self.addressCC[i]+">";buffer.push("RCPT TO: "+mail);builder+=(builder!==""?", ":"")+mail}message.push("Cc: "+builder);builder=""}length=self.addressBCC.length;if(length>0){for(var i=0;i<length;i++)buffer.push("RCPT TO: <"+self.addressBCC[i]+">")}buffer.push("DATA");buffer.push("QUIT");buffer.push("");message.push("Date: "+date.toUTCString());message.push("Subject: "+unicode_encode(self.subject));length=self.addressReply.length;if(length>0){for(var i=0;i<length;i++)builder+=(builder!==""?", ":"")+"<"+self.addressReply[i]+">";message.push("Reply-To: "+builder);builder=""}message.push("Content-Type: multipart/mixed; boundary="+boundary);message.push("");message.push("--"+boundary);message.push("Content-Type: "+(self.body.indexOf("<")!==-1&&self.body.lastIndexOf(">")!==-1?"text/html":"text/plain")+"; charset=utf-8");message.push("Content-Transfer-Encoding: base64");message.push("");message.push(prepareBASE64(new Buffer(self.body.replace(/\r\n/g,"\n").replace(/\n/g,"\r\n")).toString("base64")));length=self.files.length;if(mailer.debug){socket.on("end",function(){self.closed=true;if(socket)socket.destroy()})}socket.on("data",function(data){if(self.closed)return;var response=data.toString().split(CRLF);var length=response.length;for(var i=0;i<length;i++){var line=response[i];if(line==="")continue;if(socket)socket.emit("line",line)}});socket.on("line",function(line){line=line.toUpperCase();if(mailer.debug)console.log("<–––",line);var code=parseInt(line.match(/\d+/)[0],10);if(code===250&&!isAuthorization){if(line.indexOf("AUTH LOGIN PLAIN")!==-1||line.indexOf("AUTH PLAIN LOGIN")!==-1||options.user&&options.password){authType="plain";isAuthorization=true;if(line.indexOf("XOAUTH")===-1){auth.push("AUTH LOGIN");auth.push(new Buffer(options.user).toString("base64"));auth.push(new Buffer(options.password).toString("base64"))}else auth.push("AUTH PLAIN "+new Buffer("\x00"+options.user+"\x00"+options.password).toString("base64"))}}if(line.substring(3,4)==="-"){return}if(!isAuthenticated&&isAuthorization){isAuthenticated=true;code=334}switch(code){case 220:command=/\besmtp\b/i.test(line)?"EHLO":"HELO";write(command+" "+host);break;case 221:case 250:case 251:case 235:write(buffer.shift());if(buffer.length===0){mailer.emit("success",self);if(self.callback)self.callback(null);ending=setTimeout(function(){if(socket!==null)socket.destroy();socket=null},500)}break;case 334:var value=auth.shift();if(value===undefined){err=new Error("Forbidden.");mailer.emit("error",err,self);if(self.callback)self.callback(err);if(socket!==null)socket.destroy();socket=null;break}write(value);break;case 354:write(message.join(CRLF));if(self.files.length>0){message=null;self._writeAttachment(write,boundary,socket);return}write("--"+boundary+"--");write("");write(".");message=null;break;default:if(code<400)break;err=new Error(line);if(socket!==null)socket.destroy();socket=null;mailer.emit("error",err,self);if(self.callback)self.callback(err);break}})};Message.prototype._writeAttachment=function(write,boundary,socket){var self=this;var attachment=self.files.shift();if(attachment===undefined){write("--"+boundary+"--");write("");write(".");return}var name=attachment.name;var stream=fs.createReadStream(attachment.filename,{encoding:"base64"});var message=[];var ext=path.extname(attachment.filename);message.push("--"+boundary);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: application/octet-stream;");message.push("Content-Transfer-Encoding: base64");message.push(CRLF);write(message.join(CRLF));stream.on("data",function(buf){var length=buf.length;var count=0;var beg=0;while(count<length){count+=68;if(count>length)count=length;write(buf.slice(beg,count).toString("base64"));beg=count}});stream.on("end",function(){write(CRLF);self._writeAttachment(write,boundary,socket)});return self};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)+"\n";index=max}return output}function getHostName(address){return address.substring(address.indexOf("@")+1)}function s4(){return Math.floor((1+Math.random())*65536).toString(16).substring(1).toUpperCase()}function GUID(){return s4()+s4()+"-"+s4()+"-"+s4()+"-"+s4()+"-"+s4()+s4()+s4()}function unicode_encode(val){if(!val)return"";return"=?utf-8?B?"+new Buffer(val).toString("base64")+"?="}var mailer=new Mailer;module.exports=mailer;
exports.hook_mail = function (next, connection, params) {
const plugin = this;
const mail_from = params[0];
const txn = connection.transaction;
const results = txn.results;
// Check for MAIL FROM without an @ first - ignore those here
if (!mail_from.host) {
results.add(plugin, {skip: 'null host'});
return next();
}
let called_next = 0;
const domain = mail_from.host;
const c = plugin.cfg.main;
const timeout_id = setTimeout(() => {
// DNS answer didn't return (UDP)
connection.loginfo(plugin, 'timed out resolving MX for ' + domain);
called_next++;
if (txn) results.add(plugin, {err: 'timeout(' + domain + ')'});
next(DENYSOFT, 'Temporary resolver error (timeout)');
}, c.timeout * 1000);
function mxDone (code, reply) {
if (called_next) return;
clearTimeout(timeout_id);
called_next++;
next(code, reply);
}
// IS: IPv6 compatible
dns.resolveMx(domain, (err, addresses) => {
if (!txn) return;
if (err && plugin.mxErr(connection, domain, 'MX', err, mxDone)) return;
if (!addresses || !addresses.length) {
// Check for implicit MX 0 record
return plugin.implicit_mx(connection, domain, mxDone);
}
// Verify that the MX records resolve to valid addresses
let records = {};
let pending_queries = 0;
function check_results () {
if (pending_queries !== 0) return;
records = Object.keys(records);
if (records && records.length) {
connection.logdebug(plugin, domain + ': ' + records);
results.add(plugin, {pass: '******'});
return mxDone();
}
results.add(plugin, {fail: 'has_fwd_dns'});
return mxDone(((c.reject_no_mx) ? DENY : DENYSOFT),
'MX without A/AAAA records');
}
addresses.forEach(addr => {
// Handle MX records that are IP addresses
// This is invalid - but a lot of MTAs allow it.
if (net_utils.get_ipany_re('^\\[','\\]$','').test(addr.exchange)) {
connection.logwarn(plugin, domain + ': invalid MX ' +
addr.exchange);
if (c.allow_mx_ip) {
records[addr.exchange] = 1;
}
return;
}
pending_queries++;
net_utils.get_ips_by_host(addr.exchange, (err2, addresses2) => {
pending_queries--;
if (!txn) return;
if (err2 && err2.length === 2) {
results.add(plugin, {msg: err2[0].message});
connection.logdebug(plugin, domain + ': MX ' +
addr.priority + ' ' + addr.exchange +
' => ' + err2[0].message);
check_results();
return;
}
connection.logdebug(plugin, domain + ': MX ' + addr.priority +
' ' + addr.exchange + ' => ' + addresses2);
for (let i=0; i < addresses2.length; i++) {
// Ignore anything obviously bogus
if (net.isIPv4(addresses2[i])){
if (plugin.re_bogus_ip.test(addresses2[i])) {
connection.logdebug(plugin, addr.exchange +
': discarding ' + addresses2[i]);
continue;
}
}
if (net.isIPv6(addresses2[i])){
if (net_utils.ipv6_bogus(addresses2[i])) {
connection.logdebug(plugin, addr.exchange +
': discarding ' + addresses2[i]);
continue;
}
}
records[addresses2[i]] = 1;
}
check_results();
});
});
// In case we don't run any queries
check_results();
});
}
exports.lookup_mx = function lookup_mx (domain, cb) {
var mxs = [];
// Possible DNS errors
// NODATA
// FORMERR
// BADRESP
// NOTFOUND
// BADNAME
// TIMEOUT
// CONNREFUSED
// NOMEM
// DESTRUCTION
// NOTIMP
// EREFUSED
// SERVFAIL
// default wrap_mx just returns our object with "priority" and "exchange" keys
var wrap_mx = function (a) { return a };
var process_dns = function (err, addresses) {
if (err) {
if (err.code === 'ENODATA') {
// Most likely this is a hostname with no MX record
// Drop through and we'll get the A record instead.
return 0;
}
cb(err);
}
else if (addresses && addresses.length) {
for (var i=0,l=addresses.length; i < l; i++) {
var mx = wrap_mx(addresses[i]);
// hmail.logdebug("Got an MX from DNS: " + hmail.todo.domain + " => " + mx.priority + " " + mx.exchange);
mxs.push(mx);
}
cb(null, mxs);
}
else {
// return zero if we need to keep trying next option
return 0;
}
return 1;
};
dns.resolveMx(domain, function(err, addresses) {
if (process_dns(err, addresses)) {
return;
}
// if MX lookup failed, we lookup an A record. To do that we change
// wrap_mx() to return same thing as resolveMx() does.
wrap_mx = function (a) { return {priority:0,exchange:a} };
dns.resolve(domain, function(err, addresses) {
if (process_dns(err, addresses)) {
return;
}
var err = new Error("Found nowhere to deliver to");
err.code = 'NOMX';
cb(err);
});
});
}