#!/usr/bin/env node

/**

* ISC License

*

* Copyright (c) 2021, Andrea Giammarchi, @WebReflection

*

* Permission to use, copy, modify, and/or distribute this software for any

* purpose with or without fee is hereby granted, provided that the above

* copyright notice and this permission notice appear in all copies.

*

* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH

* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY

* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,

* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM

* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE

* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR

* PERFORMANCE OF THIS SOFTWARE.

*/

const {statSync} = require('fs');

const {resolve} = require('path');

const {env, argv} = process;

const args = argv.slice(2);

let CORS, COOP, COEP, CORP;

let PATH = '/';

let {PORT = 8080} = env;

let VERBOSE = false;

let dir = process.cwd();

for (let i = 0; i < args.length; i++) {

if (args[i].startsWith('-')) {

switch (args[i]) {

case '-h':

case '--help':

help(0);

break;

case '-v':

case '--verbose':

VERBOSE = true;

break;

case '--path':

if ((i + 1) < args.length) {

i++;

PATH = `/${args[i]}/`.replace(/^\/{2,}/, '/');

break;

}

break;

case '--coi':

args.push('--cors', '--coep', '--coop', '--corp');

break;

case '--cors':

CORS = {'Access-Control-Allow-Origin': '*'};

break;

case '--coop':

COOP = {'Cross-Origin-Opener-Policy': 'same-origin'};

break;

case '--coep':

COEP = {'Cross-Origin-Embedder-Policy': CORP ? 'require-corp' : 'credentialless'};

break;

case '--corp':

CORP = {'Cross-Origin-Resource-Policy': 'cross-origin'};

if (COEP) COEP['Cross-Origin-Embedder-Policy'] = 'require-corp';

break;

case '':

break;

case '-p':

case '--port':

if ((i + 1) < args.length && /^\d+$/.test(args[i + 1])) {

i++;

PORT = parseInt(args[i], 10);

break;

}

default:

help(1, 'Unknow option', args[i]);

}

}

else {

const stats = statSync(args[i], {throwIfNoEntry: false});

if (stats && stats.isDirectory())

dir = resolve(dir, args[i]);

else

help(1, 'Invalid folder', args[i]);

}

}

const handler = require('./cjs/index.js')(

dir,

Object.assign({}, CORS, COOP, COEP, CORP)

);

const server = require('http').createServer((req, res) => {

if (handler(req, res)) {

if (VERBOSE)

console.log(' \x1b[2m200\x1b[0m', req.url.replace(/\/$/, '/index.html'));

return;

}

if (VERBOSE)

console.log(' \x1b[31m404\x1b[0m', req.url);

res.writeHead(404);

res.end();

});

server.listen(PORT, () => {

if (VERBOSE) {

const extras = ['--verbose'];

if (CORS) extras.push('--cors');

if (COOP) extras.push('--coop');

if (COEP) extras.push('--coep');

if (CORP) extras.push('--corp');

console.log(`\n\x1b[7m\x1b[1m static-handler \x1b[0m \x1b[2m${extras.join(' ')}\x1b[0m`);

}

console.log(`\x1b[1mhttp://localhost:${PORT}${PATH}\x1b[0m \x1b[2m@ ${dir}\x1b[0m`);

});

function help(code, ...rest) {

const {length: ERROR} = rest;

console.log(`

\x1b[7m\x1b[1m static-handler \x1b[0m \x1b[2mby Andrea Giammarchi\x1b[0m

${ERROR ? `\n\x1b[31m\x1b[7m\x1b[1m ${rest[0].padEnd(15, ' ')} \x1b[0m \x1b[1m${rest[1]}\x1b[0m\n` : ''}

A very simple static files handler,

used in this script to serve any file.

\x1b[1moptions\x1b[0m

--port | -p XXXX \x1b[2moptional port to use\x1b[0m

--verbose | -v \x1b[2mlogs requirested files\x1b[0m

--help | -h \x1b[2mthis message${ERROR ? ' without errors' : ''}\x1b[0m

--path /dir \x1b[2muse \x1b[0m/dir/\x1b[2m as base path\x1b[0m

--cors \x1b[2mset \x1b[0mAccess-Control-Allow-Origin\x1b[2m as \x1b[0m*\x1b[2m origins\x1b[0m

--coop \x1b[2mset \x1b[0mCross-Origin-Opener-Policy\x1b[2m as \x1b[0msame-origin\x1b[2m\x1b[0m

--coep \x1b[2mset \x1b[0mCross-Origin-Embedder-Policy\x1b[2m as \x1b[0mrequire-corp\x1b[2m,

with CORP enabled, or \x1b[0mcredentialless\x1b[2m otherwise\x1b[0m

--corp \x1b[2mset \x1b[0mCross-Origin-Resource-Policy\x1b[2m as \x1b[0mcross-origin\x1b[2m,

forcing COEP as \x1b[0mrequire-corp\x1b[2m\x1b[0m

--coi \x1b[2menables --cors --coep --coop --corp\x1b[2m\x1b[0m

`);

process.exit(code);

}