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crypto: load PFX chain the same way as regular one
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Load the certificate chain from the PFX file the same as we do it for a
regular certificate chain.

Fix: #4127
PR-URL: #4165
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
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@indutny @Fishrock123
indutny authored and Fishrock123 committed Jan 6, 2016
1 parent ecef817 commit fcf632b
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Showing 4 changed files with 156 additions and 55 deletions.
170 changes: 120 additions & 50 deletions src/node_crypto.cc
View file
Original file line number Diff line number Diff line change
Expand Up @@ -517,46 +517,35 @@ int SSL_CTX_get_issuer(SSL_CTX* ctx, X509* cert, X509** issuer) {
}


// Read a file that contains our certificate in "PEM" format,
// possibly followed by a sequence of CA certificates that should be
// sent to the peer in the Certificate message.
//
// Taken from OpenSSL - editted for style.
int SSL_CTX_use_certificate_chain(SSL_CTX* ctx,
BIO* in,
X509* x,
STACK_OF(X509)* extra_certs,
X509** cert,
X509** issuer) {
int ret = 0;
X509* x = nullptr;
CHECK_EQ(*issuer, nullptr);
CHECK_EQ(*cert, nullptr);

x = PEM_read_bio_X509_AUX(in, nullptr, CryptoPemCallback, nullptr);

if (x == nullptr) {
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE, ERR_R_PEM_LIB);
goto end;
}

ret = SSL_CTX_use_certificate(ctx, x);
int ret = SSL_CTX_use_certificate(ctx, x);

if (ret) {
// If we could set up our certificate, now proceed to
// the CA certificates.
X509 *ca;
int r;
unsigned long err;

if (ctx->extra_certs != nullptr) {
sk_X509_pop_free(ctx->extra_certs, X509_free);
ctx->extra_certs = nullptr;
}

while ((ca = PEM_read_bio_X509(in, nullptr, CryptoPemCallback, nullptr))) {
for (int i = 0; i < sk_X509_num(extra_certs); i++) {
X509* ca = sk_X509_value(extra_certs, i);

// NOTE: Increments reference count on `ca`
r = SSL_CTX_add1_chain_cert(ctx, ca);

if (!r) {
X509_free(ca);
ret = 0;
*issuer = nullptr;
goto end;
}
// Note that we must not free r if it was successfully
Expand All @@ -567,17 +556,8 @@ int SSL_CTX_use_certificate_chain(SSL_CTX* ctx,
// Find issuer
if (*issuer != nullptr || X509_check_issued(ca, x) != X509_V_OK)
continue;
*issuer = ca;
}

// When the while loop ends, it's usually just EOF.
err = ERR_peek_last_error();
if (ERR_GET_LIB(err) == ERR_LIB_PEM &&
ERR_GET_REASON(err) == PEM_R_NO_START_LINE) {
ERR_clear_error();
} else {
// some real error
ret = 0;
*issuer = ca;
}
}

Expand All @@ -590,13 +570,88 @@ int SSL_CTX_use_certificate_chain(SSL_CTX* ctx,
// no need to free `store`
} else {
// Increment issuer reference count
CRYPTO_add(&(*issuer)->references, 1, CRYPTO_LOCK_X509);
*issuer = X509_dup(*issuer);
if (*issuer == nullptr) {
ret = 0;
goto end;
}
}
}

end:
if (ret && x != nullptr) {
*cert = X509_dup(x);
if (*cert == nullptr)
ret = 0;
}
return ret;
}


// Read a file that contains our certificate in "PEM" format,
// possibly followed by a sequence of CA certificates that should be
// sent to the peer in the Certificate message.
//
// Taken from OpenSSL - edited for style.
int SSL_CTX_use_certificate_chain(SSL_CTX* ctx,
BIO* in,
X509** cert,
X509** issuer) {
X509* x = nullptr;

// Just to ensure that `ERR_peek_last_error` below will return only errors
// that we are interested in
ERR_clear_error();

x = PEM_read_bio_X509_AUX(in, nullptr, CryptoPemCallback, nullptr);

if (x == nullptr) {
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE, ERR_R_PEM_LIB);
return 0;
}

X509* extra = nullptr;
int ret = 0;
unsigned long err = 0;

// Read extra certs
STACK_OF(X509)* extra_certs = sk_X509_new_null();
if (extra_certs == nullptr) {
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE, ERR_R_MALLOC_FAILURE);
goto done;
}

while ((extra = PEM_read_bio_X509(in, nullptr, CryptoPemCallback, nullptr))) {
if (sk_X509_push(extra_certs, extra))
continue;

// Failure, free all certs
goto done;
}
extra = nullptr;

// When the while loop ends, it's usually just EOF.
err = ERR_peek_last_error();
if (ERR_GET_LIB(err) == ERR_LIB_PEM &&
ERR_GET_REASON(err) == PEM_R_NO_START_LINE) {
ERR_clear_error();
} else {
// some real error
goto done;
}

ret = SSL_CTX_use_certificate_chain(ctx, x, extra_certs, cert, issuer);
if (!ret)
goto done;

done:
if (extra_certs != nullptr)
sk_X509_pop_free(extra_certs, X509_free);
if (extra != nullptr)
X509_free(extra);
if (x != nullptr)
*cert = x;
X509_free(x);

return ret;
}

Expand All @@ -614,6 +669,16 @@ void SecureContext::SetCert(const FunctionCallbackInfo<Value>& args) {
if (!bio)
return;

// Free previous certs
if (sc->issuer_ != nullptr) {
X509_free(sc->issuer_);
sc->issuer_ = nullptr;
}
if (sc->cert_ != nullptr) {
X509_free(sc->cert_);
sc->cert_ = nullptr;
}

int rv = SSL_CTX_use_certificate_chain(sc->ctx_,
bio,
&sc->cert_,
Expand Down Expand Up @@ -888,7 +953,7 @@ void SecureContext::LoadPKCS12(const FunctionCallbackInfo<Value>& args) {
PKCS12* p12 = nullptr;
EVP_PKEY* pkey = nullptr;
X509* cert = nullptr;
STACK_OF(X509)* extraCerts = nullptr;
STACK_OF(X509)* extra_certs = nullptr;
char* pass = nullptr;
bool ret = false;

Expand All @@ -913,28 +978,33 @@ void SecureContext::LoadPKCS12(const FunctionCallbackInfo<Value>& args) {
pass[passlen] = '\0';
}

// Free previous certs
if (sc->issuer_ != nullptr) {
X509_free(sc->issuer_);
sc->issuer_ = nullptr;
}
if (sc->cert_ != nullptr) {
X509_free(sc->cert_);
sc->cert_ = nullptr;
}

if (d2i_PKCS12_bio(in, &p12) &&
PKCS12_parse(p12, pass, &pkey, &cert, &extraCerts) &&
SSL_CTX_use_certificate(sc->ctx_, cert) &&
PKCS12_parse(p12, pass, &pkey, &cert, &extra_certs) &&
SSL_CTX_use_certificate_chain(sc->ctx_,
cert,
extra_certs,
&sc->cert_,
&sc->issuer_) &&
SSL_CTX_use_PrivateKey(sc->ctx_, pkey)) {
// set extra certs
while (X509* x509 = sk_X509_pop(extraCerts)) {
if (!sc->ca_store_) {
sc->ca_store_ = X509_STORE_new();
SSL_CTX_set_cert_store(sc->ctx_, sc->ca_store_);
}

X509_STORE_add_cert(sc->ca_store_, x509);
SSL_CTX_add_client_CA(sc->ctx_, x509);
X509_free(x509);
}
ret = true;
}

if (pkey != nullptr)
EVP_PKEY_free(pkey);
if (cert != nullptr)
X509_free(cert);
sk_X509_free(extraCerts);

ret = true;
}
if (extra_certs != nullptr)
sk_X509_free(extra_certs);

PKCS12_free(p12);
BIO_free_all(in);
Expand Down
8 changes: 8 additions & 0 deletions test/fixtures/keys/Makefile
View file
Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,14 @@ agent1-cert.pem: agent1-csr.pem ca1-cert.pem ca1-key.pem
-CAcreateserial \
-out agent1-cert.pem

agent1-pfx.pem: agent1-cert.pem agent1-key.pem ca1-cert.pem
openssl pkcs12 -export \
-in agent1-cert.pem \
-inkey agent1-key.pem \
-certfile ca1-cert.pem \
-out agent1-pfx.pem \
-password pass:sample

agent1-verify: agent1-cert.pem ca1-cert.pem
openssl verify -CAfile ca1-cert.pem agent1-cert.pem

Expand Down
Binary file added test/fixtures/keys/agent1-pfx.pem
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Binary file not shown.
33 changes: 28 additions & 5 deletions test/parallel/test-tls-ocsp-callback.js
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Original file line number Diff line number Diff line change
Expand Up @@ -22,11 +22,7 @@ var constants = require('constants');
var fs = require('fs');
var join = require('path').join;

test({ response: false }, function() {
test({ response: 'hello world' }, function() {
test({ ocsp: false });
});
});
var pfx = fs.readFileSync(join(common.fixturesDir, 'keys', 'agent1-pfx.pem'));

function test(testOptions, cb) {

Expand All @@ -47,6 +43,13 @@ function test(testOptions, cb) {
var ocspResponse;
var session;

if (testOptions.pfx) {
delete options.key;
delete options.cert;
options.pfx = testOptions.pfx;
options.passphrase = testOptions.passphrase;
}

var server = tls.createServer(options, function(cleartext) {
cleartext.on('error', function(er) {
// We're ok with getting ECONNRESET in this test, but it's
Expand Down Expand Up @@ -106,3 +109,23 @@ function test(testOptions, cb) {
assert.equal(ocspCount, 1);
});
}

var tests = [
{ response: false },
{ response: 'hello world' },
{ ocsp: false }
];

if (!common.hasFipsCrypto) {
tests.push({ pfx: pfx, passphrase: 'sample', response: 'hello pfx' });
}

function runTests(i) {
if (i === tests.length) return;

test(tests[i], common.mustCall(function() {
runTests(i + 1);
}));
}

runTests(0);

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