Splitted up module to multiple files

2015-05-01 12:02:23 +02:00
parent 24afd01294
commit c7977924e5
6 changed files with 1030 additions and 1000 deletions
@@ -0,0 +1,152 @@
+'use strict';
+
+var log       = require('winston'),
+    merge     = require('utils-merge'),
+    net       = require('net'),
+    session   = require('./session'),
+    smppUtils = require('./utils');
+
+/**
+ * Server session function - inherits from session()
+ *
+ * @param obj sock - socket object
+ * @param obj options - as derived from server()
+ * @return obj (returnObj)
+ */
+function serverSession(sock, options) {
+	var parent = session(sock);
+
+	/**
+	 * Try to log a connecting peer in
+	 *
+	 * @param obj pduObj
+	 */
+	parent.login = function(pduObj) {
+		log.debug('larvitsmpp: lib/server.js: serverSession() - login() - Data received and session is not loggedIn');
+
+		// Pause socket so we do not receive any other commands until we have processed the login
+		parent.sock.pause();
+
+		// Only bind_* is accepted when the client is not logged in
+		if (pduObj.cmdName !== 'bind_transceiver' && pduObj.cmdName !== 'bind_receiver' && pduObj.cmdName !== 'bind_transmitter') {
+			log.debug('larvitsmpp: lib/server.js: serverSession() - login()) - Session is not loggedIn and no bind_* command is given. Return error "ESME_RINVBNDSTS');
+
+			smppUtils.pduReturn(pduObj, 'ESME_RINVBNDSTS', function(err, retPdu) {
+				if (err) {
+					parent.closeSocket();
+					return;
+				}
+
+				parent.sock.resume();
+				parent.sockWrite(retPdu);
+			});
+
+			return;
+		}
+
+		// If there is a checkuserpass(), use it to check system_id and password from the PDU
+		if (typeof options.checkuserpass === 'function') {
+			options.checkuserpass(pduObj.params.system_id, pduObj.params.password, function(err, res) {
+				if (err) {
+					parent.closeSocket();
+					return;
+				}
+
+				if ( ! res) {
+					log.info('larvitsmpp: lib/server.js: serverSession() - login() - Login failed! Connected host: ' + sock.remoteAddress + ':' + sock.remotePort + ' system_id: "' + pduObj.params.system_id + '"');
+
+					parent.sock.resume();
+					parent.sendReturn(pduObj, 'ESME_RBINDFAIL');
+					return;
+				}
+
+				log.verbose('larvitsmpp: lib/server.js: serverSession() - login() - Login successful! Connected host: ' + sock.remoteAddress + ':' + sock.remotePort + ' system_id: "' + pduObj.params.system_id + '"');
+				parent.loggedIn = true;
+				parent.sock.resume();
+				parent.sendReturn(pduObj);
+			});
+
+			return;
+		}
+
+		// If we arrived here it means we are not logged in and that a bind_* event happened and no checkuserpass() method exists. Lets login!
+		parent.loggedIn = true;
+		parent.sock.resume();
+		parent.sendReturn(pduObj);
+	};
+
+	/**
+	 * Reset the enquire link timer
+	 * If this is not ran within options.timeout milliseconds, this session will self terminate
+	 */
+	parent.resetEnqLinkTimer = function() {
+		log.silly('larvitsmpp: lib/server.js: serverSession() - resetEnqLinkTimer() - Resetting the kill timer');
+		if (parent.enqLinkTimer) {
+			clearTimeout(parent.enqLinkTimer);
+		}
+
+		parent.enqLinkTimer = setTimeout(function() {
+			log.info('larvitsmpp: lib/server.js: serverSession() - resetEnqLinkTimer() - Closing session due to timeout');
+			parent.closeSocket();
+		}, options.timeout);
+	};
+
+	parent.resetEnqLinkTimer();
+
+	parent.on('incomingPdu', function(pduObj) {
+		if (pduObj.cmdName === 'unbind') {
+			parent.sendReturn(pduObj, 'ESME_ROK', true);
+		} else if (parent.loggedIn === false) {
+			log.debug('larvitsmpp: lib/server.js: serverSession() - parent.handleIncomingPdu() - Not logged in, running login function');
+			parent.login(pduObj);
+		} else if (pduObj.cmdName === 'deliver_sm') {
+			parent.deliverSm(pduObj);
+		} else if (pduObj.cmdName === 'enquire_link') {
+			parent.enquireLink(pduObj);
+		} else if (pduObj.cmdName === 'submit_sm') {
+			parent.submitSm(pduObj);
+		} else {
+			// All other commands we do not support
+			parent.sendReturn(pduObj, 'ESME_RINVCMDID');
+		}
+	});
+
+	return parent;
+}
+
+/**
+ * Setup a server
+ *
+ * @param obj options - host, port, checkuserpass() etc (OPTIONAL)
+ * @param func callback(err, session)
+ */
+function server(options, callback) {
+	if (typeof options === 'function') {
+		callback = options;
+		options  = {};
+	}
+
+	// Set default options
+	options = merge({
+		'host': 'localhost',
+		'port': 2775,
+		'timeout': 30000 // 30 sec
+	}, options || {});
+
+	// Create a server instance, and chain the listen function to it
+	// The function passed to net.createServer() becomes the event handler for the 'connection' event
+	// The sock object the callback function receives UNIQUE for each connection
+	net.createServer(function(sock) {
+		var returnObj = serverSession(sock, options);
+
+		// We have a connection - a socket object is assigned to the connection automatically
+		log.verbose('larvitsmpp: lib/server.js: server() - Incomming connection! From: ' + sock.remoteAddress + ':' + sock.remotePort);
+
+		callback(null, returnObj);
+	}).listen(options.port, options.host);
+
+	log.info('larvitsmpp: lib/server.js: server() - Up and running at ' + options.host + ':' + options.port);
+}
+
+// Expose some functions
+exports = module.exports = server;