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test: revise test-tls-econnreset for OpenSSL 1.1.0
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This test is testing what happens to the server if the client shuts off
the connection (so the server sees ECONNRESET), but the way it does it
is convoluted. It uses a static RSA key exchange with a tiny (384-bit)
RSA key. The server doesn't notice (since it is static RSA, the client
acts on the key first), so the client tries to encrypt a premaster and
fails:

  rsa routines:RSA_padding_add_PKCS1_type_2:data too large for key size
  SSL routines:ssl3_send_client_key_exchange:bad rsa encrypt

OpenSSL happens not to send an alert in this case, so we get ECONNRESET
with no alert. This is quite fragile and, notably, breaks in OpenSSL
1.1.0 now that small RSA keys are rejected by libssl. Instead, test by
just connecting a TCP socket and immediately closing it.

PR-URL: #16130
Backport-PR-URL: #18622
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Rod Vagg <[email protected]>
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davidben authored and gibfahn committed Feb 18, 2018
1 parent a6a41d8 commit 20cc0cf
Showing 1 changed file with 10 additions and 54 deletions.
64 changes: 10 additions & 54 deletions test/parallel/test-tls-econnreset.js
Original file line number Diff line number Diff line change
Expand Up @@ -25,72 +25,28 @@ if (!common.hasCrypto)
common.skip('missing crypto');

const assert = require('assert');
const fixtures = require('../common/fixtures');
const net = require('net');
const tls = require('tls');

const cacert =
`-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`;

const cert =
`-----BEGIN CERTIFICATE-----
MIIBfDCCATYCAgQaMA0GCSqGSIb3DQEBBQUAMH0xCzAJBgNVBAYTAlVTMQswCQYD
VQQIEwJDQTEWMBQGA1UEBxMNU2FuIEZyYW5jaXNjbzEZMBcGA1UEChMQU3Ryb25n
TG9vcCwgSW5jLjESMBAGA1UECxMJU3Ryb25nT3BzMRowGAYDVQQDExFjYS5zdHJv
bmdsb29wLmNvbTAeFw0xNDAxMTcyMjE1MDdaFw00MTA2MDMyMjE1MDdaMBkxFzAV
BgNVBAMTDnN0cm9uZ2xvb3AuY29tMEwwDQYJKoZIhvcNAQEBBQADOwAwOAIxAMfk
I0LWU15pPUwIQNMnRVhhOibi0TQmAau8FBtgwEfGK01WpfGUaJr1a41K8Uq7xwID
AQABoxkwFzAVBgNVHREEDjAMhwQAAAAAhwR/AAABMA0GCSqGSIb3DQEBBQUAAzEA
cGpYrhkrb7mIh9DNhV0qp7pGjqBzlHqB7KQXw2luLDp//6dyHBMexDCQznkhZKRU
-----END CERTIFICATE-----`;

const key =
`-----BEGIN RSA PRIVATE KEY-----
MIH0AgEAAjEAx+QjQtZTXmk9TAhA0ydFWGE6JuLRNCYBq7wUG2DAR8YrTVal8ZRo
mvVrjUrxSrvHAgMBAAECMBCGccvSwC2r8Z9Zh1JtirQVxaL1WWpAQfmVwLe0bAgg
/JWMU/6hS36TsYyZMxwswQIZAPTAfht/zDLb7Hwgu2twsS1Ra9w/yyvtlwIZANET
26votwJAHK1yUrZGA5nnp5qcmQ/JUQIZAII5YV/UUZvF9D/fUplJ7puENPWNY9bN
pQIZAMMwxuS3XiO7two2sQF6W+JTYyX1DPCwAQIZAOYg1TvEGT38k8e8jygv8E8w
YqrWTeQFNQ==
-----END RSA PRIVATE KEY-----`;

const ca = [ cert, cacert ];

let clientError = null;
let connectError = null;

const server = tls.createServer({ ca: ca, cert: cert, key: key }, () => {
assert.fail('should be unreachable');
}).on('tlsClientError', function(err, conn) {
const server = tls.createServer({
cert: fixtures.readKey('agent1-cert.pem'),
key: fixtures.readKey('agent1-key.pem'),
}, common.mustNotCall()).on('tlsClientError', function(err, conn) {
assert(!clientError && conn);
clientError = err;
server.close();
}).listen(0, function() {
const options = {
ciphers: 'AES128-GCM-SHA256',
port: this.address().port,
ca: ca
};
tls.connect(options).on('error', function(err) {
assert(!connectError);

connectError = err;
net.connect(this.address().port, function() {
// Destroy the socket once it is connected, so the server sees ECONNRESET.
this.destroy();
server.close();
}).write('123');
}).on('error', common.mustNotCall());
});

process.on('exit', function() {
assert(clientError);
assert(connectError);
assert(/socket hang up/.test(clientError.message));
assert(/ECONNRESET/.test(clientError.code));
});

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