tls: copy client CAs and cert store on CertCb

Copy client CA certs and cert store when asynchronously selecting `SecureContext` during `SNICallback`. We already copy private key, certificate, and certificate chain, but the client CA certs were missing. Fix: #2772

Author: indutny

src/node_crypto.cc

@@ -137,6 +137,8 @@ template class SSLWrap<TLSWrap>
 template void SSLWrap<TLSWrap>::AddMethods(Environment* env,
  Local<FunctionTemplate> t);
 template void SSLWrap<TLSWrap>::InitNPN(SecureContext* sc);
+template void SSLWrap<TLSWrap>::SetSNIContext(SecureContext* sc);
+template int SSLWrap<TLSWrap>::SetCACerts(SecureContext* sc);
 template SSL_SESSION* SSLWrap<TLSWrap>::GetSessionCallback(
  SSL* s,
 unsignedchar* key,
@@ -2264,6 +2266,8 @@ void SSLWrap<Base>::CertCbDone(const FunctionCallbackInfo<Value>& args){
  rv = SSL_use_PrivateKey(w->ssl_, pkey);
 if (rv && chain != nullptr)
  rv = SSL_set1_chain(w->ssl_, chain);
+if (rv)
+ rv = w->SetCACerts(sc);
 if (!rv){
 unsignedlong err = ERR_get_error();
 if (!err)
@@ -2314,6 +2318,28 @@ void SSLWrap<Base>::DestroySSL(){
 }
 
 
+template <classBase>
+void SSLWrap<Base>::SetSNIContext(SecureContext* sc){
+InitNPN(sc);
+SSL_set_SSL_CTX(ssl_, sc->ctx_);
+
+SetCACerts(sc);
+}
+
+
+template <classBase>
+int SSLWrap<Base>::SetCACerts(SecureContext* sc){
+int err = SSL_set1_verify_cert_store(ssl_, SSL_CTX_get_cert_store(sc->ctx_));
+if (err != 1)
+return err;
+
+STACK_OF(X509_NAME)* list = SSL_dup_CA_list(
+SSL_CTX_get_client_CA_list(sc->ctx_));
+SSL_set_client_CA_list(ssl_, list);
+return1;
+}
+
+
 voidConnection::OnClientHelloParseEnd(void* arg){
  Connection* conn = static_cast<Connection*>(arg);
 
@@ -2627,8 +2653,7 @@ int Connection::SelectSNIContextCallback_(SSL *s, int *ad, void* arg){
 if (secure_context_constructor_template->HasInstance(ret)){
  conn->sni_context_.Reset(env->isolate(), ret);
  SecureContext* sc = Unwrap<SecureContext>(ret.As<Object>());
-InitNPN(sc);
-SSL_set_SSL_CTX(s, sc->ctx_);
+ conn->SetSNIContext(sc);
  } else{
 return SSL_TLSEXT_ERR_NOACK;
  }

src/node_crypto.h

@@ -271,6 +271,8 @@ class SSLWrap{
 
 voidDestroySSL();
 voidWaitForCertCb(CertCb cb, void* arg);
+voidSetSNIContext(SecureContext* sc);
+intSetCACerts(SecureContext* sc);
 
 inline Environment* ssl_env() const{
 return env_;

src/tls_wrap.cc

@@ -857,8 +857,7 @@ int TLSWrap::SelectSNIContextCallback(SSL* s, int* ad, void* arg){
  p->sni_context_.Reset(env->isolate(), ctx);
 
  SecureContext* sc = Unwrap<SecureContext>(ctx.As<Object>());
-InitNPN(sc);
-SSL_set_SSL_CTX(s, sc->ctx_);
+ p->SetSNIContext(sc);
 return SSL_TLSEXT_ERR_OK;
 }
 #endif// SSL_CTRL_SET_TLSEXT_SERVERNAME_CB

test/parallel/test-tls-sni-option.js

@@ -26,6 +26,8 @@ function loadPEM(n){
 varserverOptions={
 key: loadPEM('agent2-key'),
 cert: loadPEM('agent2-cert'),
+requestCert: true,
+rejectUnauthorized: false,
 SNICallback: function(servername,callback){
 varcontext=SNIContexts[servername];
 
@@ -46,7 +48,8 @@ var serverOptions ={
 varSNIContexts={
 'a.example.com': {
 key: loadPEM('agent1-key'),
-cert: loadPEM('agent1-cert')
+cert: loadPEM('agent1-cert'),
+ca: [loadPEM('ca2-cert')]
 },
 'b.example.com': {
 key: loadPEM('agent3-key'),
@@ -66,6 +69,13 @@ var clientsOptions = [{
 ca: [loadPEM('ca1-cert')],
 servername: 'a.example.com',
 rejectUnauthorized: false
+},{
+port: serverPort,
+key: loadPEM('agent4-key'),
+cert: loadPEM('agent4-cert'),
+ca: [loadPEM('ca1-cert')],
+servername: 'a.example.com',
+rejectUnauthorized: false
 },{
 port: serverPort,
 key: loadPEM('agent2-key'),
@@ -97,7 +107,7 @@ var serverResults = [],
 clientError;
 
 varserver=tls.createServer(serverOptions,function(c){
-serverResults.push(c.servername);
+serverResults.push({sni: c.servername,authorized: c.authorized});
 });
 
 server.on('clientError',function(err){
@@ -144,9 +154,16 @@ function startTest(){
 }
 
 process.on('exit',function(){
-assert.deepEqual(serverResults,['a.example.com','b.example.com',
-'c.wrong.com',null]);
-assert.deepEqual(clientResults,[true,true,false,false]);
-assert.deepEqual(clientErrors,[null,null,null,'socket hang up']);
-assert.deepEqual(serverErrors,[null,null,null,'Invalid SNI context']);
+assert.deepEqual(serverResults,[
+{sni: 'a.example.com',authorized: false},
+{sni: 'a.example.com',authorized: true},
+{sni: 'b.example.com',authorized: false},
+{sni: 'c.wrong.com',authorized: false},
+null
+]);
+assert.deepEqual(clientResults,[true,true,true,false,false]);
+assert.deepEqual(clientErrors,[null,null,null,null,'socket hang up']);
+assert.deepEqual(serverErrors,[
+null,null,null,null,'Invalid SNI context'
+]);
 });