mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
Split comms across api and runtime
This commit is contained in:
Nick O'Leary
parent
efc3cc24f4
commit
f94a36613c
@ -15,13 +15,17 @@
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**/
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var ws = require("ws");
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var log;
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var log = require("../../util").log; // TODO: separate module
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var Tokens;
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var Users;
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var Permissions;
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var server;
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var settings;
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var runtimeAPI;
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var wsServer;
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var pendingConnections = [];
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var activeConnections = [];
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var retained = {};
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@ -29,29 +33,145 @@ var retained = {};
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var heartbeatTimer;
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var lastSentTime;
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function handleStatus(event) {
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publish("status/"+event.id,event.status,true);
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}
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function handleRuntimeEvent(event) {
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log.trace("runtime event: "+JSON.stringify(event));
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publish("notification/"+event.id,event.payload||{},event.retain);
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}
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function init(_server,runtime) {
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function init(_server,_settings,_runtimeAPI) {
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server = _server;
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settings = runtime.settings;
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log = runtime.log;
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settings = _settings;
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runtimeAPI = _runtimeAPI;
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Tokens = require("../auth/tokens");
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Users = require("../auth/users");
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Permissions = require("../auth/permissions");
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runtime.events.removeListener("node-status",handleStatus);
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runtime.events.on("node-status",handleStatus);
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}
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runtime.events.removeListener("runtime-event",handleRuntimeEvent);
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runtime.events.on("runtime-event",handleRuntimeEvent);
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function generateSession(length) {
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var c = "ABCDEFGHIJKLMNOPQRSTUZWXYZabcdefghijklmnopqrstuvwxyz1234567890";
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var token = [];
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for (var i=0;i<length;i++) {
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token.push(c[Math.floor(Math.random()*c.length)]);
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}
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return token.join("");
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}
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function CommsConnection(ws) {
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this.session = generateSession(32);
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this.ws = ws;
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this.stack = [];
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this.user = null;
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this.lastSentTime = 0;
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var self = this;
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log.audit({event: "comms.open"});
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log.trace("comms.open "+self.session);
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var pendingAuth = (settings.adminAuth != null);
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if (!pendingAuth) {
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addActiveConnection(self);
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}
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ws.on('close',function() {
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log.audit({event: "comms.close",user:self.user, session: self.session});
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log.trace("comms.close "+self.session);
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removeActiveConnection(self);
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});
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ws.on('message', function(data,flags) {
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var msg = null;
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try {
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msg = JSON.parse(data);
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} catch(err) {
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log.trace("comms received malformed message : "+err.toString());
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return;
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}
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if (!pendingAuth) {
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if (msg.subscribe) {
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self.subscribe(msg.subscribe);
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// handleRemoteSubscription(ws,msg.subscribe);
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}
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} else {
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var completeConnection = function(userScope,sendAck) {
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try {
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if (!userScope || !Permissions.hasPermission(userScope,"status.read")) {
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ws.send(JSON.stringify({auth:"fail"}));
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ws.close();
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} else {
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pendingAuth = false;
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addActiveConnection(self);
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if (sendAck) {
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ws.send(JSON.stringify({auth:"ok"}));
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}
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}
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} catch(err) {
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console.log(err.stack);
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// Just in case the socket closes before we attempt
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// to send anything.
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}
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}
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if (msg.auth) {
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Tokens.get(msg.auth).then(function(client) {
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if (client) {
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Users.get(client.user).then(function(user) {
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if (user) {
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self.user = user;
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log.audit({event: "comms.auth",user:self.user});
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completeConnection(client.scope,true);
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} else {
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log.audit({event: "comms.auth.fail"});
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completeConnection(null,false);
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}
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});
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} else {
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log.audit({event: "comms.auth.fail"});
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completeConnection(null,false);
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}
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});
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} else {
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if (anonymousUser) {
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log.audit({event: "comms.auth",user:anonymousUser});
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self.user = anonymousUser;
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completeConnection(anonymousUser.permissions,false);
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//TODO: duplicated code - pull non-auth message handling out
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if (msg.subscribe) {
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self.subscribe(msg.subscribe);
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}
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} else {
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log.audit({event: "comms.auth.fail"});
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completeConnection(null,false);
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}
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}
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}
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});
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ws.on('error', function(err) {
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log.warn(log._("comms.error",{message:err.toString()}));
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});
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}
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CommsConnection.prototype.send = function(topic,data) {
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var self = this;
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if (topic && data) {
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this.stack.push({topic:topic,data:data});
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}
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if (!this._xmitTimer) {
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this._xmitTimer = setTimeout(function() {
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try {
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self.ws.send(JSON.stringify(self.stack));
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self.lastSentTime = Date.now();
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} catch(err) {
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removeActiveConnection(self);
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log.warn(log._("comms.error-send",{message:err.toString()}));
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}
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delete self._xmitTimer;
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self.stack = [];
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},50);
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}
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}
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CommsConnection.prototype.subscribe = function(topic) {
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runtimeAPI.comms.subscribe({
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user: this.user,
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client: this,
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topic: topic
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})
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}
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function start() {
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var Tokens = require("../auth/tokens");
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var Users = require("../auth/users");
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var Permissions = require("../auth/permissions");
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if (!settings.disableEditor) {
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Users.default().then(function(anonymousUser) {
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var webSocketKeepAliveTime = settings.webSocketKeepAliveTime || 15000;
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@ -68,90 +188,10 @@ function start() {
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});
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wsServer.on('connection',function(ws) {
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log.audit({event: "comms.open"});
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var pendingAuth = (settings.adminAuth != null);
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ws._nr_stack = [];
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ws._nr_ok2tx = true;
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if (!pendingAuth) {
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activeConnections.push(ws);
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} else {
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pendingConnections.push(ws);
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}
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ws.on('close',function() {
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log.audit({event: "comms.close",user:ws.user});
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removeActiveConnection(ws);
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removePendingConnection(ws);
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});
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ws.on('message', function(data,flags) {
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var msg = null;
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try {
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msg = JSON.parse(data);
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} catch(err) {
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log.trace("comms received malformed message : "+err.toString());
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return;
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}
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if (!pendingAuth) {
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if (msg.subscribe) {
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handleRemoteSubscription(ws,msg.subscribe);
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}
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} else {
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var completeConnection = function(userScope,sendAck) {
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try {
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if (!userScope || !Permissions.hasPermission(userScope,"status.read")) {
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ws.send(JSON.stringify({auth:"fail"}));
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ws.close();
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} else {
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pendingAuth = false;
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removePendingConnection(ws);
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activeConnections.push(ws);
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if (sendAck) {
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ws.send(JSON.stringify({auth:"ok"}));
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}
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}
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} catch(err) {
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// Just in case the socket closes before we attempt
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// to send anything.
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}
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}
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if (msg.auth) {
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Tokens.get(msg.auth).then(function(client) {
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if (client) {
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Users.get(client.user).then(function(user) {
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if (user) {
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ws.user = user;
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log.audit({event: "comms.auth",user:ws.user});
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completeConnection(client.scope,true);
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} else {
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log.audit({event: "comms.auth.fail"});
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completeConnection(null,false);
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}
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});
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} else {
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log.audit({event: "comms.auth.fail"});
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completeConnection(null,false);
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}
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});
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} else {
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if (anonymousUser) {
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log.audit({event: "comms.auth",user:anonymousUser});
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completeConnection(anonymousUser.permissions,false);
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//TODO: duplicated code - pull non-auth message handling out
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if (msg.subscribe) {
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handleRemoteSubscription(ws,msg.subscribe);
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}
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} else {
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log.audit({event: "comms.auth.fail"});
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completeConnection(null,false);
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}
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}
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}
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});
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ws.on('error', function(err) {
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log.warn(log._("comms.error",{message:err.toString()}));
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});
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var commsConnection = new CommsConnection(ws);
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});
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wsServer.on('error', function(err) {
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log.warn(log._("comms.error-server",{message:err.toString()}));
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});
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@ -161,7 +201,7 @@ function start() {
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heartbeatTimer = setInterval(function() {
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var now = Date.now();
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if (now-lastSentTime > webSocketKeepAliveTime) {
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publish("hb",lastSentTime);
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activeConnections.forEach(connection => connection.send("hb",lastSentTime));
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}
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}, webSocketKeepAliveTime);
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});
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@ -179,63 +219,15 @@ function stop() {
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}
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}
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function publish(topic,data,retain) {
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if (server) {
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if (retain) {
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retained[topic] = data;
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} else {
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delete retained[topic];
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}
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lastSentTime = Date.now();
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activeConnections.forEach(function(conn) {
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publishTo(conn,topic,data);
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});
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}
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function addActiveConnection(connection) {
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activeConnections.push(connection);
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runtimeAPI.comms.addConnection({client: connection});
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}
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function publishTo(ws,topic,data) {
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if (topic && data) {
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ws._nr_stack.push({topic:topic,data:data});
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}
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if (ws._nr_ok2tx && (ws._nr_stack.length > 0)) {
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ws._nr_ok2tx = false;
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try {
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ws.send(JSON.stringify(ws._nr_stack));
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} catch(err) {
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removeActiveConnection(ws);
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removePendingConnection(ws);
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log.warn(log._("comms.error-send",{message:err.toString()}));
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}
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ws._nr_stack = [];
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setTimeout(function() {
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ws._nr_ok2tx = true;
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publishTo(ws);
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}, 50); // TODO: OK so a 50mS update rate should prob not be hard-coded
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}
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}
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function handleRemoteSubscription(ws,topic) {
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var re = new RegExp("^"+topic.replace(/([\[\]\?\(\)\\\\$\^\*\.|])/g,"\\$1").replace(/\+/g,"[^/]+").replace(/\/#$/,"(\/.*)?")+"$");
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for (var t in retained) {
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if (re.test(t)) {
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publishTo(ws,t,retained[t]);
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}
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}
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}
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function removeActiveConnection(ws) {
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function removeActiveConnection(connection) {
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for (var i=0;i<activeConnections.length;i++) {
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if (activeConnections[i] === ws) {
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if (activeConnections[i] === connection) {
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activeConnections.splice(i,1);
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break;
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}
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}
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}
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function removePendingConnection(ws) {
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for (var i=0;i<pendingConnections.length;i++) {
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if (pendingConnections[i] === ws) {
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pendingConnections.splice(i,1);
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runtimeAPI.comms.removeConnection({client:connection})
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break;
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}
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}
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@ -244,6 +236,5 @@ function removePendingConnection(ws) {
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module.exports = {
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init:init,
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start:start,
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stop:stop,
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publish:publish
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stop:stop
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}
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@ -24,7 +24,6 @@ var info = require("./settings");
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var auth = require("../auth");
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var nodes = require("../admin/nodes"); // TODO: move /icons into here
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var needsPermission;
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var runtime;
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var runtimeAPI;
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var log = require("../../util").log; // TODO: separate module
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var i18n = require("../../util").i18n; // TODO: separate module
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@ -32,22 +31,23 @@ var i18n = require("../../util").i18n; // TODO: separate module
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var apiUtil = require("../util");
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var ensureRuntimeStarted = function(req,res,next) {
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if (!runtime.isStarted()) {
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log.error("Node-RED runtime not started");
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res.status(503).send("Not started");
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} else {
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next();
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}
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runtimeAPI.isStarted().then( started => {
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if (!started) {
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log.error("Node-RED runtime not started");
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res.status(503).send("Not started");
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} else {
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next()
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}
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})
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}
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module.exports = {
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init: function(server, settings, _runtime, _runtimeAPI) {
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runtime = _runtime;
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init: function(server, settings, _runtimeAPI) {
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runtimeAPI = _runtimeAPI;
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needsPermission = auth.needsPermission;
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if (!settings.disableEditor) {
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info.init(runtimeAPI);
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comms.init(server,runtime);
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comms.init(server,settings,runtimeAPI);
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var ui = require("./ui");
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@ -122,6 +122,5 @@ module.exports = {
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comms.start();
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});
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},
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stop: comms.stop,
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publish: comms.publish
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stop: comms.stop
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}
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@ -28,11 +28,11 @@ var adminApp;
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var server;
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var editor;
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function init(_server,settings,runtime,runtimeAPI) {
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function init(_server,settings,storage,runtimeAPI) {
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server = _server;
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if (settings.httpAdminRoot !== false) {
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adminApp = express();
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auth.init(settings,runtime.storage);
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auth.init(settings,storage);
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var maxApiRequestSize = settings.apiMaxLength || '5mb';
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adminApp.use(bodyParser.json({limit:maxApiRequestSize}));
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@ -57,7 +57,7 @@ function init(_server,settings,runtime,runtimeAPI) {
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// Editor
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if (!settings.disableEditor) {
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editor = require("./editor");
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var editorApp = editor.init(server, settings, runtime, runtimeAPI);
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var editorApp = editor.init(server, settings, runtimeAPI);
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adminApp.use(editorApp);
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}
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@ -70,9 +70,8 @@ module.exports = {
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redUtil.init(userSettings);
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if (userSettings.httpAdminRoot !== false) {
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runtime.init(userSettings,redUtil,api);
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runtimeAPI.init(runtime,redUtil);
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api.init(httpServer,userSettings,runtime,runtimeAPI,redUtil);
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api.init(httpServer,userSettings,runtime.storage,runtimeAPI,redUtil);
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apiEnabled = true;
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server = runtime.adminApi.server;
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@ -15,5 +15,115 @@
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**/
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/**
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* @module red/comms
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* @namespace RED.comms
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*/
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/**
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* @typedef CommsConnection
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* @type {object}
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* @property {string} session - a unique session identifier
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* @property {Object} user - the user associated with the connection
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* @property {Function} send - publish a message to the connection
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*/
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var runtime;
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var retained = {};
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var connections = [];
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function handleCommsEvent(event) {
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publish(event.topic,event.data,event.retain);
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}
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function handleStatusEvent(event) {
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publish("status/"+event.id,event.status,true);
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}
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function handleRuntimeEvent(event) {
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runtime.log.trace("runtime event: "+JSON.stringify(event));
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publish("notification/"+event.id,event.payload||{},event.retain);
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}
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function publish(topic,data,retain) {
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if (retain) {
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retained[topic] = data;
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} else {
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delete retained[topic];
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}
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connections.forEach(connection => connection.send(topic,data,retain))
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}
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var api = module.exports = {
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init: function(_runtime) {
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runtime = _runtime;
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runtime.events.removeListener("node-status",handleStatusEvent);
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runtime.events.on("node-status",handleStatusEvent);
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runtime.events.removeListener("runtime-event",handleRuntimeEvent);
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runtime.events.on("runtime-event",handleRuntimeEvent);
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runtime.events.removeListener("comms",handleCommsEvent);
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runtime.events.on("comms",handleCommsEvent);
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},
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/**
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* Registers a new comms connection
|
||||
* @param {Object} opts
|
||||
* @param {User} opts.user - the user calling the api
|
||||
* @param {CommsConnection} opts.client - the client connection
|
||||
* @return {Promise<Object>} - resolves when complete
|
||||
* @memberof RED.comms
|
||||
*/
|
||||
addConnection: function(opts) {
|
||||
connections.push(opts.client);
|
||||
return Promise.resolve();
|
||||
},
|
||||
|
||||
/**
|
||||
* Unregisters a comms connection
|
||||
* @param {Object} opts
|
||||
* @param {User} opts.user - the user calling the api
|
||||
* @param {CommsConnection} opts.client - the client connection
|
||||
* @return {Promise<Object>} - resolves when complete
|
||||
* @memberof RED.comms
|
||||
*/
|
||||
removeConnection: function(opts) {
|
||||
for (var i=0;i<connections.length;i++) {
|
||||
if (connections[i] === opts.client) {
|
||||
connections.splice(i,1);
|
||||
break;
|
||||
}
|
||||
}
|
||||
return Promise.resolve();
|
||||
},
|
||||
|
||||
/**
|
||||
* Subscribes a comms connection to a given topic. Currently, all clients get
|
||||
* automatically subscribed to everything and cannot unsubscribe. Sending a subscribe
|
||||
* request will trigger retained messages to be sent.
|
||||
* @param {Object} opts
|
||||
* @param {User} opts.user - the user calling the api
|
||||
* @param {CommsConnection} opts.client - the client connection
|
||||
* @param {String} opts.topic - the topic to subscribe to
|
||||
* @return {Promise<Object>} - resolves when complete
|
||||
* @memberof RED.comms
|
||||
*/
|
||||
subscribe: function(opts) {
|
||||
var re = new RegExp("^"+opts.topic.replace(/([\[\]\?\(\)\\\\$\^\*\.|])/g,"\\$1").replace(/\+/g,"[^/]+").replace(/\/#$/,"(\/.*)?")+"$");
|
||||
for (var t in retained) {
|
||||
if (re.test(t)) {
|
||||
opts.client.send(t,retained[t]);
|
||||
}
|
||||
}
|
||||
return Promise.resolve();
|
||||
},
|
||||
|
||||
/**
|
||||
* TODO: Unsubscribes a comms connection from a given topic
|
||||
* @param {Object} opts
|
||||
* @param {User} opts.user - the user calling the api
|
||||
* @param {CommsConnection} opts.client - the client connection
|
||||
* @param {String} opts.topic - the topic to unsubscribe from
|
||||
* @return {Promise<Object>} - resolves when complete
|
||||
* @memberof RED.comms
|
||||
*/
|
||||
unsubscribe: function(opts) {}
|
||||
};
|
||||
|
||||
@ -20,7 +20,6 @@
|
||||
|
||||
/**
|
||||
* @typedef Flows
|
||||
* @alias Dave
|
||||
* @type {object}
|
||||
* @property {string} rev - the flow revision identifier
|
||||
* @property {Array} flows - the flow configuration, an array of node configuration objects
|
||||
|
||||
@ -14,12 +14,11 @@
|
||||
* limitations under the License.
|
||||
**/
|
||||
|
||||
|
||||
/**
|
||||
* A user accessing the API
|
||||
* @typedef User
|
||||
* @type {object}
|
||||
*/
|
||||
/**
|
||||
* A user accessing the API
|
||||
* @typedef User
|
||||
* @type {object}
|
||||
*/
|
||||
|
||||
var runtime;
|
||||
/**
|
||||
@ -28,6 +27,7 @@ var runtime;
|
||||
var api = module.exports = {
|
||||
init: function(_runtime, redUtil) {
|
||||
runtime = _runtime;
|
||||
api.comms.init(runtime);
|
||||
api.flows.init(runtime);
|
||||
api.nodes.init(runtime);
|
||||
api.settings.init(runtime);
|
||||
@ -42,7 +42,24 @@ var api = module.exports = {
|
||||
settings: require("./settings"),
|
||||
projects: require("./projects"),
|
||||
|
||||
/**
|
||||
* Returns whether the runtime is started
|
||||
* @param {Object} opts
|
||||
* @param {User} opts.user - the user calling the api
|
||||
* @return {Promise<Boolean>} - whether the runtime is started
|
||||
* @memberof RED
|
||||
*/
|
||||
isStarted: function(opts) {
|
||||
return Promise.resolve(runtime.isStarted());
|
||||
},
|
||||
|
||||
/**
|
||||
* Returns version number of the runtime
|
||||
* @param {Object} opts
|
||||
* @param {User} opts.user - the user calling the api
|
||||
* @return {Promise<String>} - the runtime version number
|
||||
* @memberof RED
|
||||
*/
|
||||
version: function(opts) {
|
||||
return Promise.resolve(runtime.version());
|
||||
}
|
||||
|
||||
@ -71,6 +71,15 @@ function createNodeApi(node) {
|
||||
events: runtime.events,
|
||||
util: runtime.util,
|
||||
version: runtime.version,
|
||||
comms: {
|
||||
publish: function(topic,data,retain) {
|
||||
runtime.events.emit("comms",{
|
||||
topic: topic,
|
||||
data: data,
|
||||
retain: retain
|
||||
})
|
||||
}
|
||||
}
|
||||
}
|
||||
copyObjectProperties(runtime.nodes,red.nodes,["createNode","getNode","eachNode","addCredentials","getCredentials","deleteCredentials" ]);
|
||||
red.nodes.registerType = function(type,constructor,opts) {
|
||||
@ -79,7 +88,6 @@ function createNodeApi(node) {
|
||||
copyObjectProperties(runtime.log,red.log,null,["init"]);
|
||||
copyObjectProperties(runtime.settings,red.settings,null,["init","load","reset"]);
|
||||
if (runtime.adminApi) {
|
||||
red.comms = runtime.adminApi.comms;
|
||||
red.library = {
|
||||
register: function(type) {
|
||||
return runtime.library.registerType(node.id,type);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user