117 lines
4.4 KiB
JavaScript
117 lines
4.4 KiB
JavaScript
/**
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* Copyright 2014 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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module.exports = function(RED) {
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"use strict";
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var snmp = require ("net-snmp");
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function SnmpNode(n) {
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RED.nodes.createNode(this,n);
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this.community = n.community || "public";
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this.host = n.host || "127.0.0.1";
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this.version = (n.version === "2c") ? snmp.Version2c : snmp.Version1;
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this.oids = n.oids.replace(/\s/g,"");
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this.session = snmp.createSession (this.host, this.community, {version: this.version});
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var node = this;
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this.on("input",function(msg) {
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var oids = node.oids || msg.oid;
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if (oids) {
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node.session.get(oids.split(","), function(error, varbinds) {
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if (error) {
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node.error(error.toString());
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} else {
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for (var i = 0; i < varbinds.length; i++) {
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if (snmp.isVarbindError (varbinds[i])) {
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node.error(snmp.varbindError (varbinds[i]));
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}
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else {
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if (varbinds[i].type == 4) { varbinds[i].value = varbinds[i].value.toString(); }
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varbinds[i].tstr = snmp.ObjectType[varbinds[i].type];
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//node.log(varbinds[i].oid + "|" + varbinds[i].tstr + "|" + varbinds[i].value);
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}
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}
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msg.oid = oids;
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msg.payload = varbinds;
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node.send(msg);
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}
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});
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}
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else {
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node.warn("No oid(s) to search for");
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}
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});
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}
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RED.nodes.registerType("snmp",SnmpNode);
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function SnmpTNode(n) {
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RED.nodes.createNode(this,n);
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this.community = n.community || "public";
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this.host = n.host || "127.0.0.1";
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this.version = (n.version === "2c") ? snmp.Version2c : snmp.Version1;
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this.oids = n.oids.replace(/\s/g,"");
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this.session = snmp.createSession (this.host, this.community, {version: this.version});
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var node = this;
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var maxRepetitions = 20;
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function sortInt (a, b) {
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if (a > b) { return 1; }
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else if (b > a) { return -1; }
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else { return 0; }
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}
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function responseCb (error, table) {
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if (error) {
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console.error (error.toString ());
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} else {
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var indexes = [];
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for (var index in table) {
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if (table.hasOwnProperty(index)) {
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indexes.push (parseInt (index));
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}
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}
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indexes.sort (sortInt);
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for (var i = 0; i < indexes.length; i++) {
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var columns = [];
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for (var column in table[indexes[i]]) {
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if (table[indexes[i]].hasOwnProperty(column)) {
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columns.push(parseInt (column));
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}
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}
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columns.sort(sortInt);
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console.log ("row index = " + indexes[i]);
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for (var j = 0; j < columns.length; j++) {
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console.log (" column " + columns[j] + " = " + table[indexes[i]][columns[j]]);
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}
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}
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msg.payload = table;
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node.send(msg);
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}
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}
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this.on("input",function(msg) {
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var oids = node.oids || msg.oid;
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if (oids) {
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msg.oids = oids;
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node.session.table(oids, maxRepetitions, responseCb);
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}
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else {
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node.warn("No oid to search for");
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}
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});
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}
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RED.nodes.registerType("snmp table",SnmpTNode);
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}
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