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'use strict';
// Response splitting is no longer an issue with HTTP/2. The underlying
// nghttp2 implementation automatically strips out the header values that
// contain invalid characters.
const common = require('../common');
if (!common.hasCrypto)
common.skip('missing crypto');
const assert = require('assert');
const http2 = require('http2');
const { URL } = require('url');
// Response splitting example, credit: Amit Klein, Safebreach
const str = '/welcome?lang=bar%c4%8d%c4%8aContentLength:%200%c4%8d%c4%8a%c' +
'4%8d%c4%8aHTTP/1.1%20200%20OK%c4%8d%c4%8aContentLength:%202' +
'0%c4%8d%c4%8aLastModified:%20Mon,%2027%20Oct%202003%2014:50:18' +
'%20GMT%c4%8d%c4%8aContentType:%20text/html%c4%8d%c4%8a%c4%8' +
'd%c4%8a%3chtml%3eGotcha!%3c/html%3e';
// Response splitting example, credit: Сковорода Никита Андреевич (@ChALkeR)
const x = 'fooഊSet-Cookie: foo=barഊഊ<script>alert("Hi!")</script>';
const y = 'foo⠊Set-Cookie: foo=bar';
let remaining = 3;
function makeUrl(headers) {
return `${headers[':scheme']}://${headers[':authority']}${headers[':path']}`;
}
const server = http2.createServer();
server.on('stream', common.mustCall((stream, headers) => {
const obj = Object.create(null);
switch (remaining--) {
case 3:
const url = new URL(makeUrl(headers));
obj[':status'] = 302;
obj.Location = `/foo?lang=${url.searchParams.get('lang')}`;
break;
case 2:
obj.foo = x;
break;
case 1:
obj.foo = y;
break;
}
stream.respond(obj);
stream.end();
}, 3));
server.listen(0, common.mustCall(() => {
const client = http2.connect(`http://localhost:${server.address().port}`);
function maybeClose() {
if (remaining === 0) {
server.close();
client.close();
}
}
function doTest(path, key, expected) {
const req = client.request({ ':path': path });
req.on('response', common.mustCall((headers) => {
assert.strictEqual(headers.foo, undefined);
assert.strictEqual(headers.location, undefined);
}));
req.resume();
req.on('end', common.mustCall());
req.on('close', common.mustCall(maybeClose));
}
doTest(str, 'location', str);
doTest('/', 'foo', x);
doTest('/', 'foo', y);
}));
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