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1
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var express = require("express");
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2
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var bodyParser = require("body-parser");
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var cookieParser = require('cookie-parser');
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var multer = require("multer");
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var PropertiesReader = require('properties-reader');
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var properties = PropertiesReader('./properties.file');
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var TinyURL = require('tinyurl');
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var app = express();
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var http = null;
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11
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if (properties.get('ssl')) {
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http = require("https");
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} else {
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http = require("http");
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}
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// Properties
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var auth = properties.get('userInfoUrl');
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var originServer = properties.get('originServer');
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var allowPostRequests = properties.get('post.allowed').split(',');
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var localPath = properties.get('localPath');
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var maxsize = properties.get('photo.size') * 1024;
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var storage = multer.diskStorage({
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destination: function (req, file, cb) {
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cb(null, 'uploads')
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},
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filename: function (req, file, cb) {
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if (req.params.id) {
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cb(null, req.params.id + '-' + new Date().getTime() + '.' + file.originalname.split('.').pop());
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} else {
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cb(null, file.originalname);
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}
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}
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});
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var upload = multer({storage: storage})
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app.use(bodyParser.json());
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app.use(bodyParser.urlencoded({extended: true}));
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app.use(cookieParser());
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app.use(function (req, res, next) {
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if((req.method === 'POST' || req.method === 'DELETE') && allowPostRequests.indexOf(req.url.split('?')[0]) === -1) {
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if(checkCookies(req)) {
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res.header('Access-Control-Allow-Origin', req.headers.origin);
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res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept, x-xsrf-token');
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res.header('Access-Control-Allow-Credentials', true);
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next();
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} else {
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res.header('Access-Control-Allow-Origin', '*');
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res.header('Access-Control-Allow-Credentials', true);
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res.header('Vary', 'Origin');
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res.status(403).send(getResponse(403, "Forbidden: You don't have permission to access. Maybe you are not registered."));
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}
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} else if(req.method === 'OPTIONS' && allowPostRequests.indexOf(req.url.split('?')[0]) === -1){
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res.header('Access-Control-Allow-Origin', req.headers.origin);
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res.header('Access-Control-Allow-Credentials', true);
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res.header('Access-Control-Allow-Methods', 'POST, DELETE');
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res.header('Access-Control-Max-Age', 1800);
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res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept, x-xsrf-token');
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next();
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} else {
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res.header('Access-Control-Allow-Origin', req.headers.origin);
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res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept');
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next();
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}
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});
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app.post("/upload", upload.array("uploads[]", 12), function (req, res) {
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var filepath = (localPath ? "." : __dirname) + "/" + req.files[0].path;
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let type = req.query.type;
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console.log(type);
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if(type == 'json' && req.files[0].mimetype !== 'application/json'){
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console.error("No proper file type");
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res.status(500).send(getResponse(500, "No proper file type"));
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}else if ((!type || type == 'csv') && req.files[0].mimetype !== 'text/csv' && req.files[0].mimetype !== 'application/vnd.ms-excel') {
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console.error("No proper file type");
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res.status(500).send(getResponse(500, "No proper file type"));
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} else {
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res.download(filepath);
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setTimeout(function () {
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deleteFile(filepath);
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}, 3000);
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// deleteFile(filepath);
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}
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});
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app.post('/upload/stakeholder/:id', upload.single('photo'), (req, res) => {
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sendFile(req, res, (result) => {
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return isAdminOrCurator(result.edu_person_entitlements);
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});
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});
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app.post('/upload/:id', upload.single('photo'), (req, res) => {
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sendFile(req, res, (result) => {
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return result.sub.indexOf(req.params.id) !== -1 || isAdminOrCurator(result.edu_person_entitlements);
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});
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});
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app.get('/download/:filename', function (req, res) {
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res.download('./uploads/' + req.params.filename);
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});
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app.get('/tiny', function (req, res) {
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TinyURL.shorten(req.query.url, function (res1, err) {
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if (err)
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console.log(err)
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if (res1 !== 'Error') {
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res.send(res1);
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} else {
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res.send(req.query.url);
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}
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});
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});
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app.delete('/delete/:filename', function (req, res) {
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const token = req.cookies['AccessToken'];
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if (!token) {
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res.status(401).send(getResponse(401, "Unauthorized"));
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} else {
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124
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http.get(auth + token, function (resp) {
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var responseString = "";
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resp.on("data", function (data) {
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responseString += data;
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});
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resp.on("end", function () {
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var result = JSON.parse(responseString);
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if (result.error) {
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res.status(401).send(getResponse(401, "Unauthorized"));
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} else {
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// if user id is on filename or is Admin delete file else unauthorized.
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if (result.sub.indexOf(req.params.filename.split('-')[0]) !== -1 || isAdminOrCurator(result.edu_person_entitlements)) {
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deleteFile('./uploads/' + req.params.filename);
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return res.status(200).send(getResponse(200, "File Deleted Successfully"));
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} else {
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res.status(401).send(getResponse(401, "Unauthorized"));
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}
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}
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});
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});
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}
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});
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146
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147
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const server = app.listen(8000, function () {
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console.log("Listening on port %s...", server.address().port);
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149
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});
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150
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151
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function sendFile(req, res, authorized) {
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152
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const token = req.cookies['AccessToken'];
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153
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const file = req.file;
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var filepath = (localPath ? "." : __dirname) + "/" + file.path;
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155
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if (!token) {
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res.status(401).send(getResponse(401, "Unauthorized"));
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157
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deleteFile(filepath);
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158
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} else if (!file || (file.mimetype !== 'image/jpeg' && file.mimetype !== 'image/png')) {
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159
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res.status(500).send(getResponse(500, "No image file type"));
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deleteFile(filepath);
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161
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} else if (file.size > maxsize) {
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162
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res.status(500).send(getResponse(500, "Exceeds file size limit"));
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163
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deleteFile(filepath);
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164
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} else {
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165
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http.get(auth + token, function (resp) {
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166
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var responseString = "";
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167
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resp.on("data", function (data) {
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168
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responseString += data;
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169
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});
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170
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resp.on("end", function () {
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171
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var result = JSON.parse(responseString);
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172
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if (result.error) {
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173
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res.status(401).send(getResponse(401, "Unauthorized"));
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174
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deleteFile(filepath);
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175
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} else {
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176
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if (authorized(result)) {
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177
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res.send(file);
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} else {
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179
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res.status(401).send(getResponse(401, "Unauthorized"));
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180
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deleteFile(filepath);
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181
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}
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182
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}
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183
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});
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184
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});
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185
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}
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186
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}
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187
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188
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function getResponse(code, message) {
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189
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var response = {};
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190
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response["code"] = code;
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191
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response["message"] = message;
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192
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return response;
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193
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}
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194
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195
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function deleteFile(filepath) {
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196
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const fs = require('fs');
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197
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fs.stat(filepath, function (err, stats) {
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198
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console.log(stats); //here we got all information of file in stats variable
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199
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200
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if (err) {
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201
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return console.error(err);
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202
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}
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203
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204
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fs.unlink(filepath, function (err) {
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205
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if (err) return console.log(err);
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206
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console.log('file deleted successfully');
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207
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});
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208
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});
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209
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}
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210
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211
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function isAdminOrCurator(roles) {
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212
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var isAdmin = false;
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213
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var isCurator = false;
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214
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for (var i = 0; i < roles.length; i++) {
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215
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if (roles[i] === 'urn:geant:openaire.eu:group:Portal+Administrator#aai.openaire.eu') {
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216
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isAdmin = true;
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217
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}
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218
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if (roles[i] === 'urn:geant:openaire.eu:group:Curator+-+Community#aai.openaire.eu') {
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219
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isCurator = true;
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220
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}
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221
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}
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222
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return isAdmin || isCurator;
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223
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}
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224
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225
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function checkCookies(request) {
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226
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var valid = true;
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227
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var cookieValue = request.cookies.AccessToken;
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228
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if (cookieValue === undefined || cookieValue === '') {
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229
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console.log("no cookie available");
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230
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valid = false;
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231
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} else if (!hasValidOrigin(request.headers.origin)) {
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232
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console.log("no proper origin");
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233
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valid = false;
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234
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}
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235
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return valid;
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236
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}
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237
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238
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239
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function hasValidOrigin(origin) {
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240
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if (origin !== undefined && origin.indexOf(originServer) !== -1) {
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241
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return true;
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242
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} else {
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243
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console.log("Not valid origin. Origin server is \"" + origin +
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244
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"\", but expected value is \"" + originServer +
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245
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"\". If the expected value is not right, check originServer variable.");
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246
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return false;
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247
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}
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248
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}
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