src: combine TLSWrap/SSLWrap

SSLWrap was needlessly defined as a template class, splitting the
TLS implementation over multiple locations. The original idea, I
surmise, was to make it possible to reuse SSLWrap for some other
purpose that never manifest. This squashes them down into a single
TLSWrap class and moves tls_wrap.h/cc into src/crypto.

Signed-off-by: James M Snell <jasnell@gmail.com>

PR-URL: #35552
Reviewed-By: Alba Mendez <me@alba.sh>

node.gyp

@@ -934,7 +934,7 @@
             'src/crypto/crypto_keys.cc',
             'src/crypto/crypto_keygen.cc',
             'src/crypto/crypto_scrypt.cc',
-            'src/crypto/crypto_ssl.cc',
+            'src/crypto/crypto_tls.cc',
             'src/crypto/crypto_aes.cc',
             'src/crypto/crypto_bio.h',
             'src/crypto/crypto_clienthello-inl.h',
@@ -951,7 +951,7 @@
             'src/crypto/crypto_keys.h',
             'src/crypto/crypto_keygen.h',
             'src/crypto/crypto_scrypt.h',
-            'src/crypto/crypto_ssl.h',
+            'src/crypto/crypto_tls.h',
             'src/crypto/crypto_clienthello.h',
             'src/crypto/crypto_context.h',
             'src/crypto/crypto_ecdh.h',
@@ -961,9 +961,7 @@
             'src/crypto/crypto_random.h',
             'src/crypto/crypto_timing.h',
             'src/node_crypto.cc',
-            'src/node_crypto.h',
-            'src/tls_wrap.cc',
-            'src/tls_wrap.h'
+            'src/node_crypto.h'
           ],
         }],
         [ 'OS in "linux freebsd mac" and '

src/crypto/crypto_common.cc

@@ -799,6 +799,8 @@ MaybeLocal<Array> GetClientHelloCiphers(
 
 
 MaybeLocal<Object> GetCipherInfo(Environment* env, const SSLPointer& ssl) {
+  if (SSL_get_current_cipher(ssl.get()) == nullptr)
+    return MaybeLocal<Object>();
   EscapableHandleScope scope(env->isolate());
   Local<Object> info = Object::New(env->isolate());
 

src/crypto/crypto_context.cc

@@ -472,6 +472,26 @@ void SecureContext::Init(const FunctionCallbackInfo<Value>& args) {
   SSL_CTX_set_tlsext_ticket_key_cb(sc->ctx_.get(), TicketCompatibilityCallback);
 }
 
+SSLPointer SecureContext::CreateSSL() {
+  return SSLPointer(SSL_new(ctx_.get()));
+}
+
+void SecureContext::SetNewSessionCallback(NewSessionCb cb) {
+  SSL_CTX_sess_set_new_cb(ctx_.get(), cb);
+}
+
+void SecureContext::SetGetSessionCallback(GetSessionCb cb) {
+  SSL_CTX_sess_set_get_cb(ctx_.get(), cb);
+}
+
+void SecureContext::SetSelectSNIContextCallback(SelectSNIContextCb cb) {
+  SSL_CTX_set_tlsext_servername_callback(ctx_.get(), cb);
+}
+
+void SecureContext::SetKeylogCallback(KeylogCb cb) {
+  SSL_CTX_set_keylog_callback(ctx_.get(), cb);
+}
+
 void SecureContext::SetKey(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args);
 

src/crypto/crypto_context.h

@@ -23,12 +23,26 @@ void IsExtraRootCertsFileLoaded(
 
 class SecureContext final : public BaseObject {
  public:
+  using GetSessionCb = SSL_SESSION* (*)(SSL*, const unsigned char*, int, int*);
+  using KeylogCb = void (*)(const SSL*, const char*);
+  using NewSessionCb = int (*)(SSL*, SSL_SESSION*);
+  using SelectSNIContextCb = int (*)(SSL*, int*, void*);
+
   ~SecureContext() override;
 
   static void Initialize(Environment* env, v8::Local<v8::Object> target);
 
   SSL_CTX* operator*() const { return ctx_.get(); }
 
+  SSL_CTX* ssl_ctx() const { return ctx_.get(); }
+
+  SSLPointer CreateSSL();
+
+  void SetGetSessionCallback(GetSessionCb cb);
+  void SetKeylogCallback(KeylogCb cb);
+  void SetNewSessionCallback(NewSessionCb cb);
+  void SetSelectSNIContextCallback(SelectSNIContextCb cb);
+
   // TODO(joyeecheung): track the memory used by OpenSSL types
   SET_NO_MEMORY_INFO()
   SET_MEMORY_INFO_NAME(SecureContext)