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https://github.com/xfarrow/blink
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Change endpoint from persons to people
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xfarrow
349
backend/apis/nodejs/node_modules/nodemailer/lib/ses-transport/index.js
generated
vendored
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349
backend/apis/nodejs/node_modules/nodemailer/lib/ses-transport/index.js
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vendored
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'use strict';
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const EventEmitter = require('events');
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const packageData = require('../../package.json');
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const shared = require('../shared');
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const LeWindows = require('../mime-node/le-windows');
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/**
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* Generates a Transport object for AWS SES
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*
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* Possible options can be the following:
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*
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* * **sendingRate** optional Number specifying how many messages per second should be delivered to SES
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* * **maxConnections** optional Number specifying max number of parallel connections to SES
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*
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* @constructor
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* @param {Object} optional config parameter
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*/
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class SESTransport extends EventEmitter {
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constructor(options) {
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super();
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options = options || {};
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this.options = options || {};
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this.ses = this.options.SES;
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this.name = 'SESTransport';
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this.version = packageData.version;
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this.logger = shared.getLogger(this.options, {
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component: this.options.component || 'ses-transport'
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});
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// parallel sending connections
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this.maxConnections = Number(this.options.maxConnections) || Infinity;
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this.connections = 0;
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// max messages per second
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this.sendingRate = Number(this.options.sendingRate) || Infinity;
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this.sendingRateTTL = null;
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this.rateInterval = 1000; // milliseconds
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this.rateMessages = [];
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this.pending = [];
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this.idling = true;
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setImmediate(() => {
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if (this.idling) {
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this.emit('idle');
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}
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});
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}
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/**
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* Schedules a sending of a message
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*
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* @param {Object} emailMessage MailComposer object
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* @param {Function} callback Callback function to run when the sending is completed
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*/
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send(mail, callback) {
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if (this.connections >= this.maxConnections) {
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this.idling = false;
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return this.pending.push({
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mail,
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callback
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});
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}
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if (!this._checkSendingRate()) {
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this.idling = false;
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return this.pending.push({
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mail,
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callback
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});
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}
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this._send(mail, (...args) => {
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setImmediate(() => callback(...args));
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this._sent();
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});
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}
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_checkRatedQueue() {
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if (this.connections >= this.maxConnections || !this._checkSendingRate()) {
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return;
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}
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if (!this.pending.length) {
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if (!this.idling) {
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this.idling = true;
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this.emit('idle');
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}
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return;
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}
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let next = this.pending.shift();
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this._send(next.mail, (...args) => {
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setImmediate(() => next.callback(...args));
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this._sent();
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});
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}
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_checkSendingRate() {
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clearTimeout(this.sendingRateTTL);
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let now = Date.now();
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let oldest = false;
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// delete older messages
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for (let i = this.rateMessages.length - 1; i >= 0; i--) {
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if (this.rateMessages[i].ts >= now - this.rateInterval && (!oldest || this.rateMessages[i].ts < oldest)) {
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oldest = this.rateMessages[i].ts;
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}
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if (this.rateMessages[i].ts < now - this.rateInterval && !this.rateMessages[i].pending) {
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this.rateMessages.splice(i, 1);
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}
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}
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if (this.rateMessages.length < this.sendingRate) {
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return true;
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}
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let delay = Math.max(oldest + 1001, now + 20);
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this.sendingRateTTL = setTimeout(() => this._checkRatedQueue(), now - delay);
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try {
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this.sendingRateTTL.unref();
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} catch (E) {
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// Ignore. Happens on envs with non-node timer implementation
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}
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return false;
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}
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_sent() {
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this.connections--;
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this._checkRatedQueue();
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}
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/**
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* Returns true if there are free slots in the queue
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*/
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isIdle() {
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return this.idling;
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}
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/**
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* Compiles a mailcomposer message and forwards it to SES
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*
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* @param {Object} emailMessage MailComposer object
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* @param {Function} callback Callback function to run when the sending is completed
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*/
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_send(mail, callback) {
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let statObject = {
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ts: Date.now(),
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pending: true
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};
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this.connections++;
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this.rateMessages.push(statObject);
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let envelope = mail.data.envelope || mail.message.getEnvelope();
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let messageId = mail.message.messageId();
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let recipients = [].concat(envelope.to || []);
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if (recipients.length > 3) {
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recipients.push('...and ' + recipients.splice(2).length + ' more');
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}
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this.logger.info(
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{
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tnx: 'send',
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messageId
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},
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'Sending message %s to <%s>',
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messageId,
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recipients.join(', ')
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);
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let getRawMessage = next => {
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// do not use Message-ID and Date in DKIM signature
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if (!mail.data._dkim) {
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mail.data._dkim = {};
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}
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if (mail.data._dkim.skipFields && typeof mail.data._dkim.skipFields === 'string') {
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mail.data._dkim.skipFields += ':date:message-id';
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} else {
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mail.data._dkim.skipFields = 'date:message-id';
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}
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let sourceStream = mail.message.createReadStream();
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let stream = sourceStream.pipe(new LeWindows());
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let chunks = [];
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let chunklen = 0;
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stream.on('readable', () => {
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let chunk;
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while ((chunk = stream.read()) !== null) {
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chunks.push(chunk);
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chunklen += chunk.length;
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}
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});
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sourceStream.once('error', err => stream.emit('error', err));
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stream.once('error', err => {
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next(err);
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});
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stream.once('end', () => next(null, Buffer.concat(chunks, chunklen)));
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};
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setImmediate(() =>
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getRawMessage((err, raw) => {
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if (err) {
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this.logger.error(
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{
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err,
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tnx: 'send',
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messageId
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},
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'Failed creating message for %s. %s',
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messageId,
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err.message
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);
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statObject.pending = false;
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return callback(err);
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}
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let sesMessage = {
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RawMessage: {
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// required
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Data: raw // required
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},
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Source: envelope.from,
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Destinations: envelope.to
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};
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Object.keys(mail.data.ses || {}).forEach(key => {
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sesMessage[key] = mail.data.ses[key];
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});
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let ses = (this.ses.aws ? this.ses.ses : this.ses) || {};
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let aws = this.ses.aws || {};
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let getRegion = cb => {
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if (ses.config && typeof ses.config.region === 'function') {
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// promise
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return ses.config
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.region()
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.then(region => cb(null, region))
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.catch(err => cb(err));
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}
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return cb(null, (ses.config && ses.config.region) || 'us-east-1');
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};
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getRegion((err, region) => {
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if (err || !region) {
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region = 'us-east-1';
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}
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let sendPromise;
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if (typeof ses.send === 'function' && aws.SendRawEmailCommand) {
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// v3 API
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sendPromise = ses.send(new aws.SendRawEmailCommand(sesMessage));
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} else {
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// v2 API
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sendPromise = ses.sendRawEmail(sesMessage).promise();
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}
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sendPromise
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.then(data => {
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if (region === 'us-east-1') {
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region = 'email';
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}
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statObject.pending = false;
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callback(null, {
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envelope: {
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from: envelope.from,
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to: envelope.to
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},
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messageId: '<' + data.MessageId + (!/@/.test(data.MessageId) ? '@' + region + '.amazonses.com' : '') + '>',
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response: data.MessageId,
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raw
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});
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})
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.catch(err => {
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this.logger.error(
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{
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err,
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tnx: 'send'
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},
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'Send error for %s: %s',
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messageId,
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err.message
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);
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statObject.pending = false;
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callback(err);
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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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* Verifies SES configuration
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*
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* @param {Function} callback Callback function
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*/
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verify(callback) {
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let promise;
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let ses = (this.ses.aws ? this.ses.ses : this.ses) || {};
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let aws = this.ses.aws || {};
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const sesMessage = {
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RawMessage: {
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// required
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Data: 'From: invalid@invalid\r\nTo: invalid@invalid\r\n Subject: Invalid\r\n\r\nInvalid'
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},
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Source: 'invalid@invalid',
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Destinations: ['invalid@invalid']
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};
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if (!callback) {
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promise = new Promise((resolve, reject) => {
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callback = shared.callbackPromise(resolve, reject);
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});
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}
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const cb = err => {
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if (err && (err.code || err.Code) !== 'InvalidParameterValue') {
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return callback(err);
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}
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return callback(null, true);
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};
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if (typeof ses.send === 'function' && aws.SendRawEmailCommand) {
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// v3 API
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sesMessage.RawMessage.Data = Buffer.from(sesMessage.RawMessage.Data);
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ses.send(new aws.SendRawEmailCommand(sesMessage), cb);
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} else {
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// v2 API
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ses.sendRawEmail(sesMessage, cb);
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}
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return promise;
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}
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}
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module.exports = SESTransport;
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