mirror of https://github.com/node-red/node-red.git
219 lines
8.7 KiB
JavaScript
219 lines
8.7 KiB
JavaScript
/**
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* Copyright 2013, 2015 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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var fs = require('fs');
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var fspath = require('path');
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var when = require('when');
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var redApp = null;
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var storage;
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var log;
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var needsPermission = require("./auth").needsPermission;
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function createLibrary(type) {
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if (redApp) {
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redApp.get(new RegExp("/library/"+type+"($|\/(.*))"),needsPermission("library.read"),function(req,res) {
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var path = req.params[1]||"";
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storage.getLibraryEntry(type,path).then(function(result) {
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log.audit({event: "library.get",type:type},req);
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if (typeof result === "string") {
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res.writeHead(200, {'Content-Type': 'text/plain'});
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res.write(result);
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res.end();
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} else {
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res.json(result);
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}
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}).otherwise(function(err) {
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if (err) {
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log.warn(log._("api.library.error-load-entry",{path:path,message:err.toString()}));
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if (err.code === 'forbidden') {
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log.audit({event: "library.get",type:type,error:"forbidden"},req);
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res.status(403).end();
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return;
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}
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}
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log.audit({event: "library.get",type:type,error:"not_found"},req);
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res.status(404).end();
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});
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});
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redApp.post(new RegExp("/library/"+type+"\/(.*)"),needsPermission("library.write"),function(req,res) {
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var path = req.params[0];
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var meta = req.body;
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var text = meta.text;
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delete meta.text;
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storage.saveLibraryEntry(type,path,meta,text).then(function() {
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log.audit({event: "library.set",type:type},req);
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res.status(204).end();
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}).otherwise(function(err) {
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log.warn(log._("api.library.error-save-entry",{path:path,message:err.toString()}));
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if (err.code === 'forbidden') {
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log.audit({event: "library.set",type:type,error:"forbidden"},req);
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res.status(403).end();
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return;
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}
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log.audit({event: "library.set",type:type,error:"unexpected_error",message:err.toString()},req);
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res.status(500).json({error:"unexpected_error", message:err.toString()});
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});
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});
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}
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}
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var exampleRoots = {};
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var exampleFlows = {d:{}};
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var exampleCount = 0;
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function getFlowsFromPath(path) {
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return when.promise(function(resolve,reject) {
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var result = {};
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fs.readdir(path,function(err,files) {
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var promises = [];
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var validFiles = [];
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files.forEach(function(file) {
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var fullPath = fspath.join(path,file);
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var stats = fs.lstatSync(fullPath);
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if (stats.isDirectory()) {
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validFiles.push(file);
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promises.push(getFlowsFromPath(fullPath));
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} else if (/\.json$/.test(file)){
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validFiles.push(file);
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exampleCount++;
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promises.push(when.resolve(file.split(".")[0]))
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}
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})
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var i=0;
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when.all(promises).then(function(results) {
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results.forEach(function(r) {
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if (typeof r === 'string') {
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result.f = result.f||[];
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result.f.push(r);
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} else {
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result.d = result.d||{};
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result.d[validFiles[i]] = r;
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}
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i++;
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})
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resolve(result);
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})
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});
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})
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}
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function addNodeExamplesDir(module) {
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exampleRoots[module.name] = module.path;
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getFlowsFromPath(module.path).then(function(result) {
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exampleFlows.d[module.name] = result;
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});
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}
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function removeNodeExamplesDir(module) {
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delete exampleRoots[module];
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delete exampleFlows.d[module];
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}
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module.exports = {
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init: function(app,runtime) {
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redApp = app;
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log = runtime.log;
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storage = runtime.storage;
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// TODO: this allows init to be called multiple times without
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// registering multiple instances of the listener.
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// It isn't.... ideal.
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runtime.events.removeListener("node-examples-dir",addNodeExamplesDir);
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runtime.events.on("node-examples-dir",addNodeExamplesDir);
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runtime.events.removeListener("node-module-uninstalled",removeNodeExamplesDir);
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runtime.events.on("node-module-uninstalled",removeNodeExamplesDir);
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},
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register: createLibrary,
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getAll: function(req,res) {
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storage.getAllFlows().then(function(flows) {
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log.audit({event: "library.get.all",type:"flow"},req);
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if (exampleCount > 0) {
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flows.d = flows.d||{};
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flows.d._examples_ = exampleFlows;
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}
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res.json(flows);
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});
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},
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get: function(req,res) {
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if (req.params[0].indexOf("_examples_/") === 0) {
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var m = /^_examples_\/([^\/]+)\/(.*)$/.exec(req.params[0]);
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if (m) {
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var module = m[1];
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var path = m[2]+".json";
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if (exampleRoots[module]) {
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var fullPath = fspath.join(exampleRoots[module],path);
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try {
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fs.statSync(fullPath);
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log.audit({event: "library.get",type:"flow",path:req.params[0]},req);
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return res.sendFile(fullPath,{
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headers:{
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'Content-Type': 'application/json'
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}
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})
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} catch(err) {
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console.log(err);
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}
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}
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}
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// IF we get here, we didn't find the file
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log.audit({event: "library.get",type:"flow",path:req.params[0],error:"not_found"},req);
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return res.status(404).end();
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} else {
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storage.getFlow(req.params[0]).then(function(data) {
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// data is already a JSON string
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log.audit({event: "library.get",type:"flow",path:req.params[0]},req);
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res.set('Content-Type', 'application/json');
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res.send(data);
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}).otherwise(function(err) {
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if (err) {
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log.warn(log._("api.library.error-load-flow",{path:req.params[0],message:err.toString()}));
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if (err.code === 'forbidden') {
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log.audit({event: "library.get",type:"flow",path:req.params[0],error:"forbidden"},req);
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res.status(403).end();
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return;
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}
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}
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log.audit({event: "library.get",type:"flow",path:req.params[0],error:"not_found"},req);
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res.status(404).end();
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});
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}
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},
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post: function(req,res) {
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// if (req.params[0].indexOf("_examples_/") === 0) {
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// log.warn(log._("api.library.error-save-flow",{path:req.params[0],message:"forbidden"}));
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// log.audit({event: "library.set",type:"flow",path:req.params[0],error:"forbidden"},req);
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// return res.status(403).send({error:"unexpected_error", message:"forbidden"});
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// }
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var flow = JSON.stringify(req.body);
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storage.saveFlow(req.params[0],flow).then(function() {
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log.audit({event: "library.set",type:"flow",path:req.params[0]},req);
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res.status(204).end();
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}).otherwise(function(err) {
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log.warn(log._("api.library.error-save-flow",{path:req.params[0],message:err.toString()}));
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if (err.code === 'forbidden') {
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log.audit({event: "library.set",type:"flow",path:req.params[0],error:"forbidden"},req);
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res.status(403).end();
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return;
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}
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log.audit({event: "library.set",type:"flow",path:req.params[0],error:"unexpected_error",message:err.toString()},req);
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res.status(500).send({error:"unexpected_error", message:err.toString()});
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});
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}
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}
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