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hw4: ex3

This commit is contained in:
Claudio Maggioni 2019-10-12 13:30:59 +02:00
parent 4264218206
commit 2dcbefb7db
1 changed files with 89 additions and 16 deletions
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105
hw4/Claudio_Maggioni/server.js
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@ -1,9 +1,5 @@
#!/usr/bin/env node
// vim: set ts=2 sw=2 et tw=80:
/*
* Basic node.js HTTP server
*
*/
const http = require('http');
const url = require('url');
@ -11,10 +7,89 @@ const fs = require('fs');
const routes = Object.create(null);
// Configure your routing table here...
//routes['URL'] = function;
function error(res, code, text = '') {
res.writeHead(code, { 'Content-Type': 'text/html' });
res.end(`<!DOCTYPE html>
<html lang="en">
<head>
<meta charset='utf-8'>
<title>Error ${code}</title>
</head>
<body style="text-align: center">
<h1>Error ${code}</h1>
<p>${text}</p>
<hr>
<p>SA3 - HW4</p>
</body>
</html>`);
}
routes['files'] = (req, res) => {
function fileData(reqUrl, prefix, wantExt = true) {
const uri = url.parse(reqUrl).pathname.substring(prefix.length);
const file = __dirname + '/NodeStaticFiles' + uri;
const name = file.substring(file.lastIndexOf('/') + 1);
const ext = wantExt ? name.substring(name.indexOf('.') + 1) : null;
return {
uri: !uri ? '/' : uri,
file: file,
name: name,
ext: ext
};
}
routes['explore'] = (req, res) => {
if (req.method != 'GET') {
error(res, 405, 'Use this URL with only GET requests');
return;
}
const { uri, file, name } = fileData(req.url, '/explore', false);
fs.readdir(file, { withFileTypes: true }, (err, dir) => {
if (err) {
error(res, 404, 'Directory not found');
return;
}
const list = [{ name: '.', path: '/explore' + uri }];
if (uri != '/') {
const parentUri = uri.substring(0, uri.length - name.length - 1);
list.push({ name: '..', path: '/explore' + parentUri });
}
for (const e of dir) {
list.push({
name: e.name,
dir: !e.isFile(),
path: ((e.isFile() ? '/file' : '/explore') + uri +
(uri == '/' ? '' : '/') + e.name)
});
}
console.log(list);
res.writeHead(200, { 'Content-Type': 'text/html' });
res.write(`<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>${uri} [DIR]</title>
</head>
<body>
<h1>${uri} [DIR]</h1>
<ul>`);
for (const { name, dir, path } of list) {
res.write(`<li>
<a href="${path}">${name}${dir ? ' [DIR]' : ''}</a>
</li>`);
}
res.end(`</ul>
</body>
</html>`);
});
};
routes['file'] = (req, res) => {
const FILE_TYPES = {
html: 'text/html',
css: 'text/css',
@ -32,17 +107,16 @@ routes['files'] = (req, res) => {
zip: 'application/zip'
};
const uri = url.parse(req.url).pathname.substring('/files'.length);
const file = __dirname + '/NodeStaticFiles' + uri;
const name = file.substring(file.lastIndexOf('/') + 1);
const ext = name.substring(name.indexOf('.') + 1);
if (req.method != 'GET') {
error(res, 405, 'Use this URL with only GET requests');
return;
}
console.log(file, name, ext);
const { file, name, ext } = fileData(req.url, '/file');
fs.readFile(file, (err, data) => {
if (err) {
res.writeHead(404, { 'Content-Type': 'text/html' });
res.end('File not found: ' + JSON.stringify(err));
error(res, 404, 'File not found: ' + JSON.stringify(err));
return;
}
@ -62,8 +136,7 @@ function onRequest(req, res) {
if (typeof routes[uri] === 'function') {
routes[uri](req, res);
} else {
res.writeHead(404);
res.end();
error(res, 404, 'Path not found');
}
}