436 lines
18 KiB
JavaScript
436 lines
18 KiB
JavaScript
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/**
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* POP3 protocol - RFC1939 - https://www.ietf.org/rfc/rfc1939.txt
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*
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* Dependencies:
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* * poplib - https://www.npmjs.com/package/poplib
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* * nodemailer - https://www.npmjs.com/package/nodemailer
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* * imap - https://www.npmjs.com/package/imap
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* * mailparser - https://www.npmjs.com/package/mailparser
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*/
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module.exports = function(RED) {
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"use strict";
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var nodemailer = require("nodemailer");
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var Imap = require('imap');
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var POP3Client = require("poplib");
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var MailParser = require("mailparser").MailParser;
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var util = require("util");
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try {
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var globalkeys = RED.settings.email || require(process.env.NODE_RED_HOME+"/../emailkeys.js");
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}
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catch(err) {
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}
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function EmailNode(n) {
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RED.nodes.createNode(this,n);
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this.topic = n.topic;
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this.name = n.name;
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this.outserver = n.server;
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this.outport = n.port;
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var flag = false;
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if (this.credentials && this.credentials.hasOwnProperty("userid")) {
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this.userid = this.credentials.userid;
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} else {
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if (globalkeys) {
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this.userid = globalkeys.user;
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flag = true;
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} else {
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this.error(RED._("email.errors.nouserid"));
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}
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}
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if (this.credentials && this.credentials.hasOwnProperty("password")) {
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this.password = this.credentials.password;
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} else {
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if (globalkeys) {
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this.password = globalkeys.pass;
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flag = true;
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} else {
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this.error(RED._("email.errors.nopassword"));
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}
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}
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if (flag) {
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RED.nodes.addCredentials(n.id,{userid:this.userid, password:this.password, global:true});
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}
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var node = this;
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var smtpTransport = nodemailer.createTransport({
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host: node.outserver,
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port: node.outport,
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secure: node.useSSL,
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auth: {
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user: node.userid,
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pass: node.password
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}
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});
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this.on("input", function(msg) {
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if (msg.hasOwnProperty("payload")) {
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if (smtpTransport) {
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node.status({fill:"blue",shape:"dot",text:"email.status.sending"});
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if (msg.to && node.name && (msg.to !== node.name)) {
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node.warn(RED._("node-red:common.errors.nooverride"));
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}
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var sendopts = { from: ((msg.from) ? msg.from : node.userid) }; // sender address
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sendopts.to = node.name || msg.to; // comma separated list of addressees
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if (node.name === "") {
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sendopts.cc = msg.cc;
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sendopts.bcc = msg.bcc;
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}
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sendopts.subject = msg.topic || msg.title || "Message from Node-RED"; // subject line
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if (msg.hasOwnProperty("envelope")) { sendopts.envelope = msg.envelope; }
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if (Buffer.isBuffer(msg.payload)) { // if it's a buffer in the payload then auto create an attachment instead
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if (!msg.filename) {
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var fe = "bin";
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if ((msg.payload[0] === 0xFF)&&(msg.payload[1] === 0xD8)) { fe = "jpg"; }
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if ((msg.payload[0] === 0x47)&&(msg.payload[1] === 0x49)) { fe = "gif"; } //46
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if ((msg.payload[0] === 0x42)&&(msg.payload[1] === 0x4D)) { fe = "bmp"; }
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if ((msg.payload[0] === 0x89)&&(msg.payload[1] === 0x50)) { fe = "png"; } //4E
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msg.filename = "attachment."+fe;
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}
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sendopts.attachments = [ { content: msg.payload, filename:(msg.filename.replace(/^.*[\\\/]/, '') || "file.bin") } ];
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if (msg.hasOwnProperty("headers") && msg.headers.hasOwnProperty("content-type")) {
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sendopts.attachments[0].contentType = msg.headers["content-type"];
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}
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// Create some body text..
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sendopts.text = RED._("email.default-message",{filename:(msg.filename.replace(/^.*[\\\/]/, '') || "file.bin"),description:(msg.hasOwnProperty("description") ? "\n\n"+msg.description : "")});
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}
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else {
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var payload = RED.util.ensureString(msg.payload);
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sendopts.text = payload; // plaintext body
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if (/<[a-z][\s\S]*>/i.test(payload)) { sendopts.html = payload; } // html body
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if (msg.attachments) { sendopts.attachments = msg.attachments; } // add attachments
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}
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smtpTransport.sendMail(sendopts, function(error, info) {
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if (error) {
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node.error(error,msg);
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node.status({fill:"red",shape:"ring",text:"email.status.sendfail"});
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} else {
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node.log(RED._("email.status.messagesent",{response:info.response}));
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node.status({});
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}
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});
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}
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else { node.warn(RED._("email.errors.nocredentials")); }
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}
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else { node.warn(RED._("email.errors.nopayload")); }
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});
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}
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RED.nodes.registerType("e-mail",EmailNode,{
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credentials: {
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userid: {type:"text"},
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password: {type: "password"},
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global: { type:"boolean"}
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}
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});
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//
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// EmailInNode
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//
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// Setup the EmailInNode
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function EmailInNode(n) {
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var imap;
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RED.nodes.createNode(this,n);
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this.name = n.name;
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this.repeat = n.repeat * 1000 || 300000;
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this.inserver = n.server || (globalkeys && globalkeys.server) || "imap.gmail.com";
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this.inport = n.port || (globalkeys && globalkeys.port) || "993";
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this.box = n.box || "INBOX";
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this.useSSL= n.useSSL;
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this.protocol = n.protocol || "IMAP";
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this.disposition = n.disposition || "None"; // "None", "Delete", "Read"
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var flag = false;
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if (this.credentials && this.credentials.hasOwnProperty("userid")) {
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this.userid = this.credentials.userid;
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} else {
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if (globalkeys) {
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this.userid = globalkeys.user;
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flag = true;
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} else {
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this.error(RED._("email.errors.nouserid"));
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}
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}
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if (this.credentials && this.credentials.hasOwnProperty("password")) {
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this.password = this.credentials.password;
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} else {
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if (globalkeys) {
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this.password = globalkeys.pass;
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flag = true;
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} else {
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this.error(RED._("email.errors.nopassword"));
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}
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}
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if (flag) {
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RED.nodes.addCredentials(n.id,{userid:this.userid, password:this.password, global:true});
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}
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var node = this;
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this.interval_id = null;
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// Process a new email message by building a Node-RED message to be passed onwards
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// in the message flow. The parameter called `msg` is the template message we
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// start with while `mailMessage` is an object returned from `mailparser` that
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// will be used to populate the email.
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// DCJ NOTE: - heirachical multipart mime parsers seem to not exist - this one is barely functional.
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function processNewMessage(msg, mailMessage) {
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msg = JSON.parse(JSON.stringify(msg)); // Clone the message
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// Populate the msg fields from the content of the email message
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// that we have just parsed.
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msg.payload = mailMessage.text;
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msg.topic = mailMessage.subject;
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msg.date = mailMessage.date;
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if (mailMessage.html) { msg.html = mailMessage.html; }
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if (mailMessage.to && mailMessage.from.to > 0) { msg.to = mailMessage.to; }
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if (mailMessage.cc && mailMessage.from.cc > 0) { msg.cc = mailMessage.cc; }
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if (mailMessage.bcc && mailMessage.from.bcc > 0) { msg.bcc = mailMessage.bcc; }
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if (mailMessage.from && mailMessage.from.length > 0) { msg.from = mailMessage.from[0].address; }
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if (mailMessage.attachments) { msg.attachments = mailMessage.attachments; }
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else { msg.attachments = []; }
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node.send(msg); // Propagate the message down the flow
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} // End of processNewMessage
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// Check the POP3 email mailbox for any new messages. For any that are found,
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// retrieve each message, call processNewMessage to process it and then delete
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// the messages from the server.
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function checkPOP3(msg) {
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var currentMessage;
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var maxMessage;
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// Form a new connection to our email server using POP3.
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var pop3Client = new POP3Client(
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node.inport, node.inserver,
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{enabletls: node.useSSL} // Should we use SSL to connect to our email server?
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);
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// If we have a next message to retrieve, ask to retrieve it otherwise issue a
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// quit request.
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function nextMessage() {
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if (currentMessage > maxMessage) {
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pop3Client.quit();
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return;
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}
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pop3Client.retr(currentMessage);
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currentMessage++;
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} // End of nextMessage
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pop3Client.on("stat", function(status, data) {
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// Data contains:
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// {
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// count: <Number of messages to be read>
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// octect: <size of messages to be read>
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// }
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if (status) {
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currentMessage = 1;
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maxMessage = data.count;
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nextMessage();
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} else {
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node.log(util.format("stat error: %s %j", status, data));
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}
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});
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pop3Client.on("error", function(err) {
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node.log("We caught an error: " + JSON.stringify(err));
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});
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pop3Client.on("connect", function() {
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//node.log("We are now connected");
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pop3Client.login("kolban@test.com", "password");
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});
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pop3Client.on("login", function(status, rawData) {
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//node.log("login: " + status + ", " + rawData);
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if (status) {
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pop3Client.stat();
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} else {
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node.log(util.format("login error: %s %j", status, rawData));
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pop3Client.quit();
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}
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});
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pop3Client.on("retr", function(status, msgNumber, data, rawData) {
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node.log(util.format("retr: status=%s, msgNumber=%d, data=%j", status, msgNumber, data));
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if (status) {
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// We have now received a new email message. Create an instance of a mail parser
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// and pass in the email message. The parser will signal when it has parsed the message.
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var mailparser = new MailParser();
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mailparser.on("end", function(mailObject) {
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//node.log(util.format("mailparser: on(end): %j", mailObject));
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processNewMessage(msg, mailObject);
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});
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mailparser.write(data);
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mailparser.end();
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pop3Client.dele(msgNumber);
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}
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else {
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node.log(util.format("retr error: %s %j", status, rawData));
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pop3Client.quit();
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}
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});
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pop3Client.on("invalid-state", function(cmd) {
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node.log("Invalid state: " + cmd);
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});
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pop3Client.on("locked", function(cmd) {
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node.log("We were locked: " + cmd);
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});
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// When we have deleted the last processed message, we can move on to
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// processing the next message.
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pop3Client.on("dele", function(status, msgNumber) {
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nextMessage();
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});
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} // End of checkPOP3
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//
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// checkIMAP
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//
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// Check the email sever using the IMAP protocol for new messages.
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function checkIMAP(msg) {
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node.log("Checking IMAP for new messages");
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// We get back a 'ready' event once we have connected to imap
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imap.once("ready", function() {
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node.status({fill:"blue", shape:"dot", text:"email.status.fetching"});
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//console.log("> ready");
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// Open the inbox folder
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imap.openBox(node.box, // Mailbox name
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false, // Open readonly?
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function(err, box) {
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//console.log("> Inbox open: %j", box);
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imap.search([ 'UNSEEN' ], function(err, results) {
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if (err) {
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node.status({fill:"red", shape:"ring", text:"email.status.foldererror"});
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node.error(RED._("email.errors.fetchfail", {folder:node.box}),err);
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imap.end();
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return;
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}
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//console.log("> search - err=%j, results=%j", err, results);
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if (results.length === 0) {
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//console.log(" [X] - Nothing to fetch");
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node.status({});
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imap.end();
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return;
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}
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var marks = false;
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if (node.disposition === "Read") { marks = true; }
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// We have the search results that contain the list of unseen messages and can now fetch those messages.
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var fetch = imap.fetch(results, {
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bodies: '',
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struct: true,
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markSeen: marks
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});
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// For each fetched message returned ...
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fetch.on('message', function(imapMessage, seqno) {
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//node.log(RED._("email.status.message",{number:seqno}));
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var messageText = "";
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//console.log("> Fetch message - msg=%j, seqno=%d", imapMessage, seqno);
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imapMessage.on('body', function(stream, info) {
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//console.log("> message - body - stream=?, info=%j", info);
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stream.on('data', function(chunk) {
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//console.log("> stream - data - chunk=??");
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messageText += chunk.toString('utf8');
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});
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stream.once('end', function() {
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var mailParser = new MailParser();
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mailParser.on('end', function(mailMessage) {
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processNewMessage(msg, mailMessage);
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});
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mailParser.write(messageText);
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mailParser.end();
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}); // End of msg->end
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}); // End of msg->body
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}); // End of fetch->message
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// When we have fetched all the messages, we don't need the imap connection any more.
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fetch.on('end', function() {
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node.status({});
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var cleanup = function() {
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imap.end();
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};
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if (this.disposition === "Delete") {
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imap.addFlags(results, "\Deleted", cleanup);
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} else if (this.disposition === "Read") {
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imap.addFlags(results, "\Seen", cleanup);
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} else {
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cleanup();
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}
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});
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fetch.once('error', function(err) {
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console.log('Fetch error: ' + err);
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});
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}); // End of imap->search
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}); // End of imap->openInbox
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}); // End of imap->ready
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node.status({fill:"grey",shape:"dot",text:"node-red:common.status.connecting"});
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imap.connect();
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} // End of checkIMAP
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// Perform a check of the email inboxes using either POP3 or IMAP
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function checkEmail(msg) {
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if (node.protocol === "POP3") {
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checkPOP3(msg);
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} else if (node.protocol === "IMAP") {
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checkIMAP(msg);
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}
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} // End of checkEmail
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if (node.protocol === "IMAP") {
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imap = new Imap({
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user: node.userid,
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password: node.password,
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host: node.inserver,
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port: node.inport,
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tls: node.useSSL,
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tlsOptions: { rejectUnauthorized: false },
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connTimeout: node.repeat,
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authTimeout: node.repeat
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});
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imap.on('error', function(err) {
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if (err.errno !== "ECONNRESET") {
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node.log(err);
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node.status({fill:"red",shape:"ring",text:"email.status.connecterror"});
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}
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});
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}
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this.on("input", function(msg) {
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checkEmail(msg);
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});
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this.on("close", function() {
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if (this.interval_id != null) {
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clearInterval(this.interval_id);
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}
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if (imap) { imap.destroy(); }
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});
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// Set the repetition timer as needed
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if (!isNaN(this.repeat) && this.repeat > 0) {
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this.interval_id = setInterval( function() {
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node.emit("input",{});
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}, this.repeat );
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}
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node.emit("input",{});
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}
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RED.nodes.registerType("e-mail in",EmailInNode,{
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credentials: {
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userid: { type:"text" },
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password: { type: "password" },
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global: { type:"boolean" }
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}
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});
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};
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