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Diffstat (limited to 'tools/node_modules/nodemailer/node_modules/simplesmtp/lib/client.js')
| -rw-r--r-- | tools/node_modules/nodemailer/node_modules/simplesmtp/lib/client.js | 709 |
1 files changed, 709 insertions, 0 deletions
diff --git a/tools/node_modules/nodemailer/node_modules/simplesmtp/lib/client.js b/tools/node_modules/nodemailer/node_modules/simplesmtp/lib/client.js new file mode 100644 index 0000000..cfe8cea --- /dev/null +++ b/tools/node_modules/nodemailer/node_modules/simplesmtp/lib/client.js @@ -0,0 +1,709 @@ +// TODO: +// * Lisada timeout serveri ühenduse jaoks + +var Stream = require("stream").Stream, + utillib = require("util"), + net = require("net"), + tls = require("tls"), + oslib = require("os"), + starttls = require("./starttls").starttls; + +// monkey patch net and tls to support nodejs 0.4 +if(!net.connect && net.createConnection){ + net.connect = net.createConnection; +} + +if(!tls.connect && tls.createConnection){ + tls.connect = tls.createConnection; +} + +// expose to the world +module.exports = function(port, host, options){ + var connection = new SMTPClient(port, host, options); + process.nextTick(connection.connect.bind(connection)); + return connection; +}; + +/** + * <p>Generates a SMTP connection object</p> + * + * <p>Optional options object takes the following possible properties:</p> + * <ul> + * <li><b>secureConnection</b> - use SSL</li> + * <li><b>name</b> - the name of the client server</li> + * <li><b>auth</b> - authentication object <code>{user:"...", pass:"..."}</code> + * <li><b>ignoreTLS</b> - ignore server support for STARTTLS</li> + * <li><b>debug</b> - output client and server messages to console</li> + * <li><b>instanceId</b> - unique instance id for debugging</li> + * </ul> + * + * @constructor + * @namespace SMTP Client module + * @param {Number} [port=25] Port number to connect to + * @param {String} [host="localhost"] Hostname to connect to + * @param {Object} [options] Option properties + */ +function SMTPClient(port, host, options){ + Stream.call(this); + this.writable = true; + this.readable = true; + + this.options = options || {}; + + this.port = port || (this.options.secureConnection ? 465 : 25); + this.host = host || "localhost"; + + this.options.secureConnection = !!this.options.secureConnection; + this.options.auth = this.options.auth || false; + this.options.maxConnections = this.options.maxConnections || 5; + + if(!this.options.name){ + // defaul hostname is machine hostname or [IP] + var defaultHostname = (oslib.hostname && oslib.hostname()) || + (oslib.getHostname && oslib.getHostname()) || + ""; + if(defaultHostname.indexOf('.')<0){ + defaultHostname = "[127.0.0.1]"; + } + if(defaultHostname.match(/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/)){ + defaultHostname = "["+defaultHostname+"]"; + } + + this.options.name = defaultHostname; + } + + this._init(); +} +utillib.inherits(SMTPClient, Stream); + +/** + * <p>Initializes instance variables</p> + */ +SMTPClient.prototype._init = function(){ + /** + * Defines if the current connection is secure or not. If not, + * STARTTLS can be used if available + * @private + */ + this._secureMode = false; + + /** + * Ignore incoming data on TLS negotiation + * @private + */ + this._ignoreData = false; + + /** + * Store incomplete messages coming from the server + * @private + */ + this._remainder = ""; + + /** + * If set to true, then this object is no longer active + * @private + */ + this.destroyed = false; + + /** + * The socket connecting to the server + * @publick + */ + this.socket = false; + + /** + * Lists supported auth mechanisms + * @private + */ + this._supportedAuth = []; + + /** + * Currently in data transfer state + * @private + */ + this._dataMode = false; + + /** + * Keep track if the client sends a leading \r\n in data mode + * @private + */ + this._lastDataBytes = new Buffer(2); + + /** + * Function to run if a data chunk comes from the server + * @private + */ + this._currentAction = false; + + if(this.options.ignoreTLS || this.options.secureConnection){ + this._secureMode = true; + } +}; + +/** + * <p>Creates a connection to a SMTP server and sets up connection + * listener</p> + */ +SMTPClient.prototype.connect = function(){ + + if(this.options.secureConnection){ + this.socket = tls.connect(this.port, this.host, {}, this._onConnect.bind(this)); + }else{ + this.socket = net.connect(this.port, this.host); + this.socket.on("connect", this._onConnect.bind(this)); + } + + this.socket.on("error", this._onError.bind(this)); +}; + +/** + * <p>Upgrades the connection to TLS</p> + * + * @param {Function} callback Callbac function to run when the connection + * has been secured + */ +SMTPClient.prototype._upgradeConnection = function(callback){ + this._ignoreData = true; + starttls(this.socket, (function(socket){ + this.socket = socket; + this._ignoreData = false; + this._secureMode = true; + this.socket.on("data", this._onData.bind(this)); + + return callback(null, true); + }).bind(this)); +}; + +/** + * <p>Connection listener that is run when the connection to + * the server is opened</p> + * + * @event + */ +SMTPClient.prototype._onConnect = function(){ + if("setKeepAlive" in this.socket){ + this.socket.setKeepAlive(true); + }else if(this.socket.encrypted && "setKeepAlive" in this.socket.encrypted){ + this.socket.encrypted.setKeepAlive(true); // secure connection + } + + this.socket.on("data", this._onData.bind(this)); + this.socket.on("close", this._onClose.bind(this)); + this.socket.on("end", this._onEnd.bind(this)); + + this._currentAction = this._actionGreeting; +}; + +/** + * <p>Destroys the client - removes listeners etc.</p> + */ +SMTPClient.prototype._destroy = function(){ + if(this._destroyed)return; + this._destroyed = true; + this.emit("end"); + this.removeAllListeners(); +}; + +/** + * <p>'data' listener for data coming from the server</p> + * + * @event + * @param {Buffer} chunk Data chunk coming from the server + */ +SMTPClient.prototype._onData = function(chunk){ + var str; + + if(this._ignoreData || !chunk || !chunk.length){ + return; + } + + // Wait until end of line + if(chunk[chunk.length-1] != 0x0A){ + this._remainder += chunk.toString(); + return; + }else{ + str = (this._remainder + chunk.toString()).trim(); + this._remainder = ""; + } + + if(this.options.debug){ + console.log("SERVER"+(this.options.instanceId?" "+ + this.options.instanceId:"")+":\n└──"+str.replace(/\r?\n/g,"\n ")); + } + + if(typeof this._currentAction == "function"){ + this._currentAction.call(this, str); + } +}; + +/** + * <p>'error' listener for the socket</p> + * + * @event + * @param {Error} err Error object + * @param {String} type Error name + */ +SMTPClient.prototype._onError = function(err, type, data){ + if(type && type != "Error"){ + err.name = type; + } + if(data){ + err.data = data; + } + this.emit("error", err); + this.close(); +}; + +/** + * <p>'close' listener for the socket</p> + * + * @event + */ +SMTPClient.prototype._onClose = function(){ + this._destroy(); +}; + +/** + * <p>'end' listener for the socket</p> + * + * @event + */ +SMTPClient.prototype._onEnd = function(){ + this._destroy(); +}; + +/** + * <p>Passes data stream to socket if in data mode</p> + * + * @param {Buffer} chunk Chunk of data to be sent to the server + */ +SMTPClient.prototype.write = function(chunk){ + // works only in data mode + if(!this._dataMode){ + // this line should never be reached but if it does, then + // say act like everything's normal. + return true; + } + + if(typeof chunk == "string"){ + chunk = new Buffer(chunk, "utf-8"); + } + + if(chunk.length > 2){ + this._lastDataBytes[0] = chunk[chunk.length-2]; + this._lastDataBytes[1] = chunk[chunk.length-1]; + }else if(chunk.length == 1){ + this._lastDataBytes[0] = this._lastDataBytes[1]; + this._lastDataBytes[1] = chunk[0]; + } + + if(this.options.debug){ + console.log("CLIENT (DATA)"+(this.options.instanceId?" "+ + this.options.instanceId:"")+":\n└──"+chunk.toString().trim().replace(/\n/g,"\n ")); + } + + // pass the chunk to the socket + return this.socket.write(chunk); +}; + +/** + * <p>Indicates that a data stream for the socket is ended. Works only + * in data mode.</p> + * + * @param {Buffer} [chunk] Chunk of data to be sent to the server + */ +SMTPClient.prototype.end = function(chunk){ + // works only in data mode + if(!this._dataMode){ + // this line should never be reached but if it does, then + // say act like everything's normal. + return true; + } + + if(chunk && chunk.length){ + this.write(chunk); + } + + // redirect output from the server to _actionStream + this._currentAction = this._actionStream; + + // indicate that the stream has ended by sending a single dot on its own line + // if the client already closed the data with \r\n no need to do it again + if(this._lastDataBytes[0] == 0x0D && this._lastDataBytes[1] == 0x0A){ + this.socket.write(new Buffer(".\r\n", "utf-8")); + }else if(this._lastDataBytes[1] == 0x0D){ + this.socket.write(new Buffer("\n.\r\n")); + }else{ + this.socket.write(new Buffer("\r\n.\r\n")); + } + + // end data mode + this._dataMode = false; +}; + +/** + * <p>Send a command to the server, append \r\n</p> + * + * @param {String} str String to be sent to the server + */ +SMTPClient.prototype.sendCommand = function(str){ + if(this.options.debug){ + console.log("CLIENT"+(this.options.instanceId?" "+ + this.options.instanceId:"")+":\n└──"+(str || "").toString().trim().replace(/\n/g,"\n ")); + } + this.socket.write(new Buffer(str+"\r\n", "utf-8")); +}; + +/** + * <p>Sends QUIT</p> + */ +SMTPClient.prototype.quit = function(){ + this.sendCommand("QUIT"); + this._currentAction = this.close; +}; + +/** + * <p>Closes the connection to the server</p> + */ +SMTPClient.prototype.close = function(){ + if(this.options.debug){ + console.log("Closing connection to the server"); + } + if(this.socket && !this.socket.destroyed){ + this.socket.end(); + } + this._destroy(); +}; + +/** + * <p>Initiates a new message by submitting envelope data, starting with + * <code>MAIL FROM:</code> command</p> + * + * @param {Object} envelope Envelope object in the form of + * <code>{from:"...", to:["..."]}</code> + */ +SMTPClient.prototype.useEnvelope = function(envelope){ + this._envelope = envelope || {}; + this._envelope.from = this._envelope.from || ("anonymous@"+this.options.name); + + // clone the recipients array for latter manipulation + this._envelope.rcptQueue = JSON.parse(JSON.stringify(this._envelope.to || [])); + this._envelope.rcptFailed = []; + + this._currentAction = this._actionMAIL; + this.sendCommand("MAIL FROM:<"+(this._envelope.from)+">"); +}; + +/** + * <p>If needed starts the authentication, if not emits 'idle' to + * indicate that this client is ready to take in an outgoing mail</p> + */ +SMTPClient.prototype._authenticateUser = function(){ + + if(!this.options.auth){ + // no need to authenticate, at least no data given + this._currentAction = this._actionIdle; + this.emit("idle"); // ready to take orders + return; + } + + var auth; + + if(this.options.auth.XOAuthToken && this._supportedAuth.indexOf("XOAUTH")>=0){ + auth = "XOAUTH"; + }else if(this.options.authMethod) { + auth = this.options.authMethod.toUpperCase().trim(); + }else{ + // use first supported + auth = (this._supportedAuth[0] || "PLAIN").toUpperCase().trim(); + } + + switch(auth){ + case "XOAUTH": + this._currentAction = this._actionAUTHComplete; + + if(typeof this.options.auth.XOAuthToken == "object" && + typeof this.options.auth.XOAuthToken.generate == "function"){ + this.options.auth.XOAuthToken.generate((function(err, XOAuthToken){ + if(err){ + return this._onError(err, "XOAuthTokenError"); + } + this.sendCommand("AUTH XOAUTH " + XOAuthToken); + }).bind(this)); + }else{ + this.sendCommand("AUTH XOAUTH " + this.options.auth.XOAuthToken.toString()); + } + return; + case "LOGIN": + this._currentAction = this._actionAUTH_LOGIN_USER; + this.sendCommand("AUTH LOGIN"); + return; + case "PLAIN": + this._currentAction = this._actionAUTHComplete; + this.sendCommand("AUTH PLAIN "+new Buffer( + this.options.auth.user+"\u0000"+ + this.options.auth.user+"\u0000"+ + this.options.auth.pass,"utf-8").toString("base64")); + return; + } + + this._onError(new Error("Unknown authentication method - "+auth), "UnknowAuthError"); +}; + +/** ACTIONS **/ + +/** + * <p>Will be run after the connection is created and the server sends + * a greeting. If the incoming message starts with 220 initiate + * SMTP session by sending EHLO command</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionGreeting = function(str){ + if(str.substr(0,3) != "220"){ + this._onError(new Error("Invalid greeting from server - "+str), false, str); + return; + } + + this._currentAction = this._actionEHLO; + this.sendCommand("EHLO "+this.options.name); +}; + +/** + * <p>Handles server response for EHLO command. If it yielded in + * error, try HELO instead, otherwise initiate TLS negotiation + * if STARTTLS is supported by the server or move into the + * authentication phase.</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionEHLO = function(str){ + if(str.charAt(0) != "2"){ + // Try HELO instead + this._currentAction = this._actionHELO; + this.sendCommand("HELO "+this.options.name); + return; + } + + // Detect if the server supports STARTTLS + if(!this._secureMode && str.match(/[ \-]STARTTLS\r?$/mi)){ + this.sendCommand("STARTTLS"); + this._currentAction = this._actionSTARTTLS; + return; + } + + // Detect if the server supports PLAIN auth + if(str.match(/AUTH(?:\s+[^\n]*\s+|\s+)PLAIN/i)){ + this._supportedAuth.push("PLAIN"); + } + + // Detect if the server supports LOGIN auth + if(str.match(/AUTH(?:\s+[^\n]*\s+|\s+)LOGIN/i)){ + this._supportedAuth.push("LOGIN"); + } + + // Detect if the server supports LOGIN auth + if(str.match(/AUTH(?:\s+[^\n]*\s+|\s+)XOAUTH/i)){ + this._supportedAuth.push("XOAUTH"); + } + + this._authenticateUser.call(this); +}; + +/** + * <p>Handles server response for HELO command. If it yielded in + * error, emit 'error', otherwise move into the authentication phase.</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionHELO = function(str){ + if(str.charAt(0) != "2"){ + this._onError(new Error("Invalid response for EHLO/HELO - "+str), false, str); + return; + } + this._authenticateUser.call(this); +}; + +/** + * <p>Handles server response for STARTTLS command. If there's an error + * try HELO instead, otherwise initiate TLS upgrade. If the upgrade + * succeedes restart the EHLO</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionSTARTTLS = function(str){ + if(str.charAt(0) != "2"){ + // Try HELO instead + this._currentAction = this._actionHELO; + this.sendCommand("HELO "+this.options.name); + return; + } + + this._upgradeConnection((function(err, secured){ + if(err){ + this._onError(new Error("Error initiating TLS - "+(err.message || err)), "TLSError"); + return; + } + if(this.options.debug){ + console.log("Connection secured"); + } + + if(secured){ + // restart session + this._currentAction = this._actionEHLO; + this.sendCommand("EHLO "+this.options.name); + }else{ + this._authenticateUser.call(this); + } + }).bind(this)); +}; + +/** + * <p>Handle the response for AUTH LOGIN command. We are expecting + * '334 VXNlcm5hbWU6' (base64 for 'Username:'). Data to be sent as + * response needs to be base64 encoded username.</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionAUTH_LOGIN_USER = function(str){ + if(str != "334 VXNlcm5hbWU6"){ + this._onError(new Error("Invalid login sequence while waiting for '334 VXNlcm5hbWU6' - "+str), false, str); + return; + } + this._currentAction = this._actionAUTH_LOGIN_PASS; + this.sendCommand(new Buffer( + this.options.auth.user, "utf-8").toString("base64")); +}; + +/** + * <p>Handle the response for AUTH LOGIN command. We are expecting + * '334 UGFzc3dvcmQ6' (base64 for 'Password:'). Data to be sent as + * response needs to be base64 encoded password.</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionAUTH_LOGIN_PASS = function(str){ + if(str != "334 UGFzc3dvcmQ6"){ + this._onError(new Error("Invalid login sequence while waiting for '334 UGFzc3dvcmQ6' - "+str), false, str); + return; + } + this._currentAction = this._actionAUTHComplete; + this.sendCommand(new Buffer(this.options.auth.pass, "utf-8").toString("base64")); +}; + +/** + * <p>Handles the response for authentication, if there's no error, + * the user can be considered logged in. Emit 'idle' and start + * waiting for a message to send</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionAUTHComplete = function(str){ + if(str.charAt(0) != "2"){ + this._onError(new Error("Invalid login - "+str), "AuthError", str); + return; + } + + this._currentAction = this._actionIdle; + this.emit("idle"); // ready to take orders +}; + +/** + * <p>This function is not expected to run. If it does then there's probably + * an error (timeout etc.)</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionIdle = function(str){ + if(Number(str.charAt(0)) > 3){ + this._onError(new Error(str), false, str); + return; + } + + // this line should never get called +}; + +/** + * <p>Handle response for a <code>MAIL FROM:</code> command</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionMAIL = function(str){ + if(Number(str.charAt(0)) != "2"){ + this._onError(new Error("Mail from command failed - " + str), "SenderError", str); + return; + } + + if(!this._envelope.rcptQueue.length){ + this._onError(new Error("Can't send mail - no recipients defined"), "RecipientError"); + }else{ + this._envelope.curRecipient = this._envelope.rcptQueue.shift(); + this._currentAction = this._actionRCPT; + this.sendCommand("RCPT TO:<"+this._envelope.curRecipient+">"); + } +}; + +/** + * <p>Handle response for a <code>RCPT TO:</code> command</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionRCPT = function(str){ + if(Number(str.charAt(0)) != "2"){ + // this is a soft error + this._envelope.rcptFailed.push(this._envelope.curRecipient); + } + + if(!this._envelope.rcptQueue.length){ + if(this._envelope.rcptFailed.length < this._envelope.to.length){ + this.emit("rcptFailed", this._envelope.rcptFailed); + this._currentAction = this._actionDATA; + this.sendCommand("DATA"); + }else{ + this._onError(new Error("Can't send mail - all recipients were rejected"), "RecipientError"); + return; + } + }else{ + this._envelope.curRecipient = this._envelope.rcptQueue.shift(); + this._currentAction = this._actionRCPT; + this.sendCommand("RCPT TO:<"+this._envelope.curRecipient+">"); + } +}; + +/** + * <p>Handle response for a <code>DATA</code> command</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionDATA = function(str){ + // response should be 354 but according to this issue https://github.com/eleith/emailjs/issues/24 + // some servers might use 250 instead, so lets check for 2 or 3 as the first digit + if([2,3].indexOf(Number(str.charAt(0)))<0){ + this._onError(new Error("Data command failed - " + str), false, str); + return; + } + + // Emit that connection is set up for streaming + this._dataMode = true; + this._currentAction = this._actionIdle; + this.emit("message"); +}; + +/** + * <p>Handle response for a <code>DATA</code> stream</p> + * + * @param {String} str Message from the server + */ +SMTPClient.prototype._actionStream = function(str){ + if(Number(str.charAt(0)) != "2"){ + // Message failed + this.emit("ready", false, str); + }else{ + // Message sent succesfully + this.emit("ready", true, str); + } + + // Waiting for new connections + this._currentAction = this._actionIdle; + process.nextTick(this.emit.bind(this, "idle")); +};
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