iot-sol
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Intel(r) IoT Services Orchestration Layer - HTML5 IDE + Node.js middleware to create and host distributed IoT Apps in minutes
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JavaScript
/******************************************************************************
Copyright (c) 2016, Intel Corporation
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of Intel Corporation nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
/**
* Copyright 2013, 2016 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
/**
* POP3 protocol - RFC1939 - https://www.ietf.org/rfc/rfc1939.txt
*
* Dependencies:
* * poplib - https://www.npmjs.com/package/poplib
* * nodemailer - https://www.npmjs.com/package/nodemailer
* * imap - https://www.npmjs.com/package/imap
* * mailparser - https://www.npmjs.com/package/mailparser
*/
module.exports = function(RED) {
"use strict";
var nodemailer = require("nodemailer");
var Imap = require('imap');
var POP3Client = require("poplib");
var MailParser = require("mailparser").MailParser;
var util = require("util");
try {
var globalkeys = RED.settings.email || require(process.env.NODE_RED_HOME+"/../emailkeys.js");
} catch(err) {
}
function EmailNode(n) {
RED.nodes.createNode(this,n);
this.topic = n.topic;
this.name = n.name;
this.outserver = n.server;
this.outport = n.port;
var flag = false;
if (this.credentials && this.credentials.hasOwnProperty("userid")) {
this.userid = this.credentials.userid;
} else {
if (globalkeys) {
this.userid = globalkeys.user;
flag = true;
} else {
this.error(RED._("email.errors.nouserid"));
}
}
if (this.credentials && this.credentials.hasOwnProperty("password")) {
this.password = this.credentials.password;
} else {
if (globalkeys) {
this.password = globalkeys.pass;
flag = true;
} else {
this.error(RED._("email.errors.nopassword"));
}
}
if (flag) {
RED.nodes.addCredentials(n.id,{userid:this.userid, password:this.password, global:true});
}
var node = this;
var smtpTransport = nodemailer.createTransport({
host: node.outserver,
port: node.outport,
secure: true,
auth: {
user: node.userid,
pass: node.password
}
});
this.on("input", function(msg) {
if (msg.hasOwnProperty("payload")) {
if (smtpTransport) {
node.status({fill:"blue",shape:"dot",text:"email.status.sending"});
if (msg.to && node.name && (msg.to !== node.name)) {
node.warn(RED._("node-red:common.errors.nooverride"));
}
var sendopts = { from: node.userid }; // sender address
sendopts.to = node.name || msg.to; // comma separated list of addressees
if (node.name === "") {
sendopts.cc = msg.cc;
sendopts.bcc = msg.bcc;
}
sendopts.subject = msg.topic || msg.title || "Message from Node-RED"; // subject line
if (msg.hasOwnProperty("envelope")) { sendopts.envelope = msg.envelope; }
if (Buffer.isBuffer(msg.payload)) { // if it's a buffer in the payload then auto create an attachment instead
if (!msg.filename) {
var fe = "bin";
if ((msg.payload[0] === 0xFF)&&(msg.payload[1] === 0xD8)) { fe = "jpg"; }
if ((msg.payload[0] === 0x47)&&(msg.payload[1] === 0x49)) { fe = "gif"; } //46
if ((msg.payload[0] === 0x42)&&(msg.payload[1] === 0x4D)) { fe = "bmp"; }
if ((msg.payload[0] === 0x89)&&(msg.payload[1] === 0x50)) { fe = "png"; } //4E
msg.filename = "attachment."+fe;
}
sendopts.attachments = [ { content: msg.payload, filename:(msg.filename.replace(/^.*[\\\/]/, '') || "file.bin") } ];
if (msg.hasOwnProperty("headers") && msg.headers.hasOwnProperty("content-type")) {
sendopts.attachments[0].contentType = msg.headers["content-type"];
}
// Create some body text..
sendopts.text = RED._("email.default-message",{filename:(msg.filename.replace(/^.*[\\\/]/, '') || "file.bin"),description:(msg.hasOwnProperty("description") ? "\n\n"+msg.description : "")});
}
else {
var payload = RED.util.ensureString(msg.payload);
sendopts.text = payload; // plaintext body
if (/<[a-z][\s\S]*>/i.test(payload)) { sendopts.html = payload; } // html body
if (msg.attachments) { sendopts.attachments = msg.attachments; } // add attachments
}
smtpTransport.sendMail(sendopts, function(error, info) {
if (error) {
node.error(error,msg);
node.status({fill:"red",shape:"ring",text:"email.status.sendfail"});
} else {
node.log(RED._("email.status.messagesent",{response:info.response}));
node.status({});
}
});
}
else { node.warn(RED._("email.errors.nocredentials")); }
}
else { node.warn(RED._("email.errors.nopayload")); }
});
}
RED.nodes.registerType("e-mail",EmailNode,{
credentials: {
userid: {type:"text"},
password: {type: "password"},
global: { type:"boolean"}
}
});
//
// EmailInNode
//
// Setup the EmailInNode
function EmailInNode(n) {
var imap;
RED.nodes.createNode(this,n);
this.name = n.name;
this.repeat = n.repeat * 1000 || 300000;
this.inserver = n.server || (globalkeys && globalkeys.server) || "imap.gmail.com";
this.inport = n.port || (globalkeys && globalkeys.port) || "993";
this.box = n.box || "INBOX";
this.useSSL= n.useSSL;
this.protocol = n.protocol || "IMAP";
this.disposition = n.disposition || "None"; // "None", "Delete", "Read"
var flag = false;
if (this.credentials && this.credentials.hasOwnProperty("userid")) {
this.userid = this.credentials.userid;
} else {
if (globalkeys) {
this.userid = globalkeys.user;
flag = true;
} else {
this.error(RED._("email.errors.nouserid"));
}
}
if (this.credentials && this.credentials.hasOwnProperty("password")) {
this.password = this.credentials.password;
} else {
if (globalkeys) {
this.password = globalkeys.pass;
flag = true;
} else {
this.error(RED._("email.errors.nopassword"));
}
}
if (flag) {
RED.nodes.addCredentials(n.id,{userid:this.userid, password:this.password, global:true});
}
var node = this;
this.interval_id = null;
// Process a new email message by building a Node-RED message to be passed onwards
// in the message flow. The parameter called `msg` is the template message we
// start with while `mailMessage` is an object returned from `mailparser` that
// will be used to populate the email.
// DCJ NOTE: - heirachical multipart mime parsers seem to not exist - this one is barely functional.
function processNewMessage(msg, mailMessage) {
msg = JSON.parse(JSON.stringify(msg)); // Clone the message
// Populate the msg fields from the content of the email message
// that we have just parsed.
msg.payload = mailMessage.text;
msg.topic = mailMessage.subject;
msg.date = mailMessage.date;
if (mailMessage.html) {
msg.html = mailMessage.html;
}
if (mailMessage.from && mailMessage.from.length > 0) {
msg.from = mailMessage.from[0].address;
}
if (mailMessage.attachments) {
msg.attachments = mailMessage.attachments;
} else {
msg.attachments = [];
}
node.send(msg); // Propagate the message down the flow
} // End of processNewMessage
// Check the POP3 email mailbox for any new messages. For any that are found,
// retrieve each message, call processNewMessage to process it and then delete
// the messages from the server.
function checkPOP3(msg) {
var currentMessage;
var maxMessage;
// Form a new connection to our email server using POP3.
var pop3Client = new POP3Client(
node.inport, node.inserver,
{enabletls: node.useSSL} // Should we use SSL to connect to our email server?
);
// If we have a next message to retrieve, ask to retrieve it otherwise issue a
// quit request.
function nextMessage() {
if (currentMessage > maxMessage) {
pop3Client.quit();
return;
}
pop3Client.retr(currentMessage);
currentMessage++;
} // End of nextMessage
pop3Client.on("stat", function(status, data) {
// Data contains:
// {
// count: <Number of messages to be read>
// octect: <size of messages to be read>
// }
if (status) {
currentMessage = 1;
maxMessage = data.count;
nextMessage();
} else {
node.log(util.format("stat error: %s %j", status, data));
}
});
pop3Client.on("error", function(err) {
node.log("We caught an error: " + JSON.stringify(err));
});
pop3Client.on("connect", function() {
//node.log("We are now connected");
pop3Client.login("kolban@test.com", "password");
});
pop3Client.on("login", function(status, rawData) {
//node.log("login: " + status + ", " + rawData);
if (status) {
pop3Client.stat();
} else {
node.log(util.format("login error: %s %j", status, rawData));
pop3Client.quit();
}
});
pop3Client.on("retr", function(status, msgNumber, data, rawData) {
node.log(util.format("retr: status=%s, msgNumber=%d, data=%j", status, msgNumber, data));
if (status) {
// We have now received a new email message. Create an instance of a mail parser
// and pass in the email message. The parser will signal when it has parsed the message.
var mailparser = new MailParser();
mailparser.on("end", function(mailObject) {
//node.log(util.format("mailparser: on(end): %j", mailObject));
processNewMessage(msg, mailObject);
});
mailparser.write(data);
mailparser.end();
pop3Client.dele(msgNumber);
}
else {
node.log(util.format("retr error: %s %j", status, rawData));
pop3Client.quit();
}
});
pop3Client.on("invalid-state", function(cmd) {
node.log("Invalid state: " + cmd);
});
pop3Client.on("locked", function(cmd) {
node.log("We were locked: " + cmd);
});
// When we have deleted the last processed message, we can move on to
// processing the next message.
pop3Client.on("dele", function(status, msgNumber) {
nextMessage();
});
} // End of checkPOP3
//
// checkIMAP
//
// Check the email sever using the IMAP protocol for new messages.
function checkIMAP(msg) {
node.log("Checking IMAP for new messages");
// We get back a 'ready' event once we have connected to imap
imap.once("ready", function() {
node.status({fill:"blue", shape:"dot", text:"email.status.fetching"});
//console.log("> ready");
// Open the inbox folder
imap.openBox(node.box, // Mailbox name
false, // Open readonly?
function(err, box) {
//console.log("> Inbox open: %j", box);
imap.search([ 'UNSEEN' ], function(err, results) {
if (err) {
node.status({fill:"red", shape:"ring", text:"email.status.foldererror"});
node.error(RED._("email.errors.fetchfail", {folder:node.box}),err);
imap.end();
return;
}
//console.log("> search - err=%j, results=%j", err, results);
if (results.length === 0) {
//console.log(" [X] - Nothing to fetch");
node.status({});
imap.end();
return;
}
// We have the search results that contain the list of unseen messages and can now fetch those messages.
var fetch = imap.fetch(results, {
bodies: '',
struct: true,
markSeen : true
});
// For each fetched message returned ...
fetch.on('message', function(imapMessage, seqno) {
//node.log(RED._("email.status.message",{number:seqno}));
var messageText = "";
//console.log("> Fetch message - msg=%j, seqno=%d", imapMessage, seqno);
imapMessage.on('body', function(stream, info) {
//console.log("> message - body - stream=?, info=%j", info);
stream.on('data', function(chunk) {
//console.log("> stream - data - chunk=??");
messageText += chunk.toString('utf8');
});
stream.once('end', function() {
var mailParser = new MailParser();
mailParser.on('end', function(mailMessage) {
processNewMessage(msg, mailMessage);
});
mailParser.write(messageText);
mailParser.end();
}); // End of msg->end
}); // End of msg->body
}); // End of fetch->message
// When we have fetched all the messages, we don't need the imap connection any more.
fetch.on('end', function() {
var cleanup = function() {
node.status({});
imap.end();
};
if (this.disposition == "Delete") {
imap.addFlags(results, "\Deleted", cleanup);
} else if (this.disposition == "Read") {
imap.addFlags(results, "\Answered", cleanup);
} else {
cleanup();
}
});
fetch.once('error', function(err) {
console.log('Fetch error: ' + err);
});
}); // End of imap->search
}); // End of imap->openInbox
}); // End of imap->ready
imap.connect();
node.status({fill:"grey",shape:"dot",text:"node-red:common.status.connecting"});
} // End of checkIMAP
// Perform a check of the email inboxes using either POP3 or IMAP
function checkEmail(msg) {
if (node.protocol === "POP3") {
checkPOP3(msg);
} else if (node.protocol === "IMAP") {
checkIMAP(msg);
}
} // End of checkEmail
if (node.protocol === "IMAP") {
imap = new Imap({
user: node.userid,
password: node.password,
host: node.inserver,
port: node.inport,
tls: node.useSSL,
tlsOptions: { rejectUnauthorized: false },
connTimeout: node.repeat,
authTimeout: node.repeat
});
imap.on('error', function(err) {
if (err.errno !== "ECONNRESET") {
node.log(err);
node.status({fill:"red",shape:"ring",text:"email.status.connecterror"});
}
});
}
this.on("input", function(msg) {
checkEmail(msg);
});
this.on("close", function() {
if (this.interval_id != null) {
clearInterval(this.interval_id);
}
if (imap) { imap.destroy(); }
});
// Set the repetition timer as needed
if (!isNaN(this.repeat) && this.repeat > 0) {
this.interval_id = setInterval( function() {
node.emit("input",{});
}, this.repeat );
}
node.emit("input",{});
}
RED.nodes.registerType("e-mail in",EmailInNode,{
credentials: {
userid: { type:"text" },
password: { type: "password" },
global: { type:"boolean" }
}
});
};