249 lines
8.6 KiB
JavaScript
249 lines
8.6 KiB
JavaScript
var express = require("express");
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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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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) === -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) === -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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if (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/:id', upload.single('photo'), (req, res) => {
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const token = req.headers['x-xsrf-token'];
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const file = req.file;
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var filepath = (localPath?".":__dirname)+"/" + file.path;
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console.log(filepath);
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if(!token) {
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res.status(401).send(getResponse(401, "Unauthorized"));
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deleteFile(filepath);
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}
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else if (!file || (file.mimetype !== 'image/jpeg' && file.mimetype !== 'image/png')) {
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res.status(500).send(getResponse(500, "No image file type"));
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deleteFile(filepath);
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}
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else if (file.size > maxsize) {
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res.status(500).send(getResponse(500, "Exceeds file size limit"));
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deleteFile(filepath);
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}
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else {
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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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deleteFile(filepath);
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} else {
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// if user id contains id param or is Admin or Curator keep file and send information, else delete it.
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if(result.sub.indexOf(req.params.id) !== -1 || isAdminOrCurator(result.edu_person_entitlements)) {
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res.send(file);
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} else {
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res.status(401).send(getResponse(401, "Unauthorized"));
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deleteFile(filepath);
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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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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.headers['x-xsrf-token'];
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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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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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const server = app.listen(8000, function () {
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console.log("Listening on port %s...", server.address().port);
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});
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function getResponse(code, message) {
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var response = {};
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response["code"] = code;
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response["message"] = message;
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return response;
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}
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function deleteFile(filepath) {
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const fs = require('fs');
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fs.stat(filepath, function (err, stats) {
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console.log(stats); //here we got all information of file in stats variable
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if (err) {
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return console.error(err);
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}
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fs.unlink(filepath, function (err) {
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if (err) return console.log(err);
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console.log('file deleted successfully');
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});
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});
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}
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function isAdminOrCurator(roles) {
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var isAdmin = false;
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var isCurator = false;
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for(var i = 0; i < roles.length; i++) {
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if(roles[i] === 'urn:geant:openaire.eu:group:Portal+Administrator#aai.openaire.eu') {
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isAdmin = true;
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}
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if(roles[i] === 'urn:geant:openaire.eu:group:Curator+-+Community#aai.openaire.eu') {
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isCurator = true;
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}
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}
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return isAdmin || isCurator;
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}
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function checkCookies(request){
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var valid = true;
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var cookieValue = request.cookies.AccessToken;
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if(cookieValue === undefined || cookieValue === ''){
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console.log("no cookie available");
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valid = false;
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} else {
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const headerValue = request.headers['x-xsrf-token'];
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if(headerValue === undefined || headerValue === ''){
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console.log("no header available");
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valid = false;
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} else{
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if(cookieValue !== headerValue){
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console.log("no proper header or cookie");
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valid = false;
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} else if(!hasValidOrigin(request.headers.origin)){
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console.log("no proper origin");
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valid = false;
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}
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}
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}
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return valid;
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}
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function hasValidOrigin(origin) {
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if(origin !== undefined && origin.indexOf(originServer) !== -1) {
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return true;
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} else {
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console.log("Not valid origin. Origin server is \"" + origin +
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"\", but expected value is \"" + originServer +
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"\". If the expected value is not right, check originServer variable.");
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return false;
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}
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}
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