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1 | /*
* Copyright 2014 Telefonica Investigación y Desarrollo, S.A.U
*
* This file is part of iotagent-lwm2m-lib
*
* iotagent-lwm2m-lib is free software: you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the License,
* or (at your option) any later version.
*
* iotagent-lwm2m-lib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with iotagent-lwm2m-lib.
* If not, seehttp://www.gnu.org/licenses/.
*
* For those usages not covered by the GNU Affero General Public License
* please contact with::[contacto@tid.es]
*/
'use strict';
var async = require('async'),
errors = require('../../errors'),
logger = require('logops'),
config,
registry,
coapUtils = require('./../coapUtils'),
context = {
op: 'LWM2MLib.Registration'
};
/**
* Generates the end of request handler that will generate the final response to the COAP Client.
*/
function endRegistration(req, res) {
return function (error, result) {
if (error) {
logger.debug(context, 'Registration request ended up in error [%s] with code [%s]', error.name, error.code);
res.code = error.code;
res.end(error.name);
} else {
var root = (config.baseRoot) ? config.baseRoot : '';
logger.debug(context, 'Registration request ended successfully');
res.code = '2.01';
res.setOption('Location-Path', root + '/rd/' + result[1]);
res.end('');
}
};
}
/**
* Invoke the user handler for this operation, with all the information from the query parameters as its arguments.
*
* @param {Object} queryParams Object containing all the query parameters.
* @param {Function} handler User handler to be invoked.
*/
function applyHandler(queryParams, payload, handler, callback) {
logger.debug(context, 'Calling user handler for registration actions for device [%s]', queryParams.ep);
handler(queryParams.ep, queryParams.lt, queryParams.lwm2m, queryParams.b, payload, callback);
}
/**
* Creates the device object to be stored in the registry and stores it.
*
* @param {Object} queryParams Object containing all the query parameters.
* @param {Object} req Arriving COAP Request.
*/
function storeDevice(queryParams, req, callback) {
var device = {
name: queryParams.ep,
lifetime: queryParams.lt,
address: req.rsinfo.address
};
logger.debug(context, 'Storing the following device in the db:\n%s', JSON.stringify(device, null, 4));
if (req.url.match(/^\/rd\/?.*/)) {
device.type = config.defaultType;
} else Eif (config.types) {
for (var i in config.types) {
if (req.url.indexOf(config.types[i].url) === 0) {
device.type = config.types[i].name;
}
}
}
if (device.type) {
logger.debug(context, 'Registered device [%s] with type [%s]', device.name, device.type);
registry.register(device, callback);
} else {
logger.debug(context, 'No type found for device [%s]', device.name);
callback(new errors.TypeNotFound(req.url));
}
}
/**
* Handle the registration operation.
*
* @param {Object} req Arriving COAP Request to be handled.
* @param {Object} res Outgoing COAP Response.
* @param {Function} handler User handler to be executed if everything goes ok.
*/
function handleRegistration(req, res, handler) {
var queryParams = coapUtils.extractQueryParams(req);
logger.debug(context, 'Handling registration request');
async.series([
async.apply(coapUtils.checkMandatoryQueryParams, ['ep', 'b', 'lt'], queryParams),
async.apply(storeDevice, queryParams, req),
async.apply(applyHandler, queryParams, req.payload.toString(), handler)
], endRegistration(req, res));
}
function init(newRegistry, newConfig) {
registry = newRegistry;
config = newConfig;
}
exports.init = init;
exports.handle = handleRegistration; |