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Merged
bnoordhuis merged 2 commits into from
Dec 8, 2015
Merged

tls: support reading multiple cas from one input #4099

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813e73e
tools: list missing whitespace/if-one-line cpplint
bnoordhuis Dec 1, 2015
82e0974
tls: support reading multiple cas from one input
bnoordhuis Dec 1, 2015
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tls: support reading multiple cas from one input 
Before this commit you had to pass multiple CA certificates as an array
of strings.  For convenience you can now pass them as a single string.

Fixes: #4096
PR-URL: #4099
Reviewed-By: Fedor Indutny <fedor@indutny.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
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@bnoordhuis
bnoordhuis committed Dec 8, 2015
commit 82e0974afa8353e3f025ae2cefd7147ca86419db
41 changes: 12 additions & 29 deletions src/node_crypto.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -453,26 +453,6 @@ static BIO* LoadBIO(Environment* env, Local<Value> v) {
}


// Takes a string or buffer and loads it into an X509
// Caller responsible for X509_free-ing the returned object.
static X509* LoadX509(Environment* env, Local<Value> v) {
HandleScope scope(env->isolate());

BIO *bio = LoadBIO(env, v);
if (!bio)
return nullptr;

X509 * x509 = PEM_read_bio_X509(bio, nullptr, CryptoPemCallback, nullptr);
if (!x509) {
BIO_free_all(bio);
return nullptr;
}

BIO_free_all(bio);
return x509;
}


void SecureContext::SetKey(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);

Expand Down Expand Up @@ -668,16 +648,19 @@ void SecureContext::AddCACert(const FunctionCallbackInfo<Value>& args) {
newCAStore = true;
}

X509* x509 = LoadX509(env, args[0]);
if (!x509)
return;

X509_STORE_add_cert(sc->ca_store_, x509);
SSL_CTX_add_client_CA(sc->ctx_, x509);

X509_free(x509);
unsigned cert_count = 0;
if (BIO* bio = LoadBIO(env, args[0])) {
while (X509* x509 = // NOLINT(whitespace/if-one-line)
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@indutny indutny Dec 1, 2015

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Let's do while (true) here, and break in loop if x509 === nullptr. I don't think that this deserves disabling lint rules.

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@bnoordhuis bnoordhuis Dec 1, 2015

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The NOLINT works around what I suspect is a bug in the lint rule. If you put the while on a single line (and s/nullptr/0/ to keep it < 80 columns) it won't trigger.

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@indutny indutny Dec 1, 2015

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idk, it doesn't look like a good code style to me, splitting while's condition between lines. That's just my opinion, though

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@bnoordhuis bnoordhuis Dec 1, 2015

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/cc @trevnorris - you can be the arbitrator.

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@trevnorris trevnorris Dec 8, 2015

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Is the following not possible?

  if (BIO* bio = LoadBIO(env, args[0])) {
    X509* x509;
    while (x509 = PEM_read_bio_X509(bio, nullptr, CryptoPemCallback, nullptr)) {
     // ...

If not, I'd say how it is now isn't the prettiest but personally find it easier to logically follow. Which wins for me.

PEM_read_bio_X509(bio, nullptr, CryptoPemCallback, nullptr)) {
X509_STORE_add_cert(sc->ca_store_, x509);
SSL_CTX_add_client_CA(sc->ctx_, x509);
X509_free(x509);
cert_count += 1;
}
BIO_free_all(bio);
}

if (newCAStore) {
if (cert_count > 0 && newCAStore) {
SSL_CTX_set_cert_store(sc->ctx_, sc->ca_store_);
}
}
Expand Down
35 changes: 35 additions & 0 deletions test/parallel/test-tls-two-cas-one-string.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,35 @@
'use strict';

const common = require('../common');
const tls = require('tls');
const fs = require('fs');

const ca1 =
fs.readFileSync(`${common.fixturesDir}/keys/ca1-cert.pem`, `utf8`);
const ca2 =
fs.readFileSync(`${common.fixturesDir}/keys/ca2-cert.pem`, `utf8`);
const cert =
fs.readFileSync(`${common.fixturesDir}/keys/agent3-cert.pem`, `utf8`);
const key =
fs.readFileSync(`${common.fixturesDir}/keys/agent3-key.pem`, `utf8`);

function test(ca, next) {
const server = tls.createServer({ ca, cert, key }, function(conn) {
this.close();
conn.end();
});

server.addContext('agent3', { ca, cert, key });

const host = common.localhostIPv4;
const port = common.PORT;
server.listen(port, host, function() {
tls.connect({ servername: 'agent3', host, port, ca });
});

server.once('close', next);
}

const array = [ca1, ca2];
const string = ca1 + '\n' + ca2;
test(array, () => test(string, () => {}));