crypto: use named FunctionTemplate

RandomBytes and PBKDF2 were using the same "generic" ObjectTemplate for construction. Instead create one for each that is properly named.
nodejs · AndreasMadsen · Apr 11, 2017 · Mar 3, 2017 · Dec 13, 2016 · Sep 28, 2016
commit fd84709ba330684c2d59575db4f60ce18536f157
diff --git a/src/env-inl.h b/src/env-inl.h
@@ -207,12 +207,6 @@ inline Environment::Environment(IsolateData* isolate_data,
   set_binding_cache_object(v8::Object::New(isolate()));
   set_module_load_list_array(v8::Array::New(isolate()));
 
-  v8::Local<v8::FunctionTemplate> fn = v8::FunctionTemplate::New(isolate());
-  fn->SetClassName(FIXED_ONE_BYTE_STRING(isolate(), "InternalFieldObject"));
-  v8::Local<v8::ObjectTemplate> obj = fn->InstanceTemplate();
-  obj->SetInternalFieldCount(1);
-  set_generic_internal_field_template(obj);
-
   RB_INIT(&cares_task_list_);
   AssignToContext(context);
 
@@ -473,12 +467,6 @@ inline void Environment::SetTemplateMethod(v8::Local<v8::FunctionTemplate> that,
   t->SetClassName(name_string);  // NODE_SET_METHOD() compatibility.
 }
 
-inline v8::Local<v8::Object> Environment::NewInternalFieldObject() {
-  v8::MaybeLocal<v8::Object> m_obj =
-      generic_internal_field_template()->NewInstance(context());
-  return m_obj.ToLocalChecked();
-}
-
 #define VP(PropertyName, StringValue) V(v8::Private, PropertyName)
 #define VS(PropertyName, StringValue) V(v8::String, PropertyName)
 #define V(TypeName, PropertyName)                                             \

diff --git a/src/env.h b/src/env.h
@@ -262,13 +262,14 @@ namespace node {
   V(context, v8::Context)                                                     \
   V(domain_array, v8::Array)                                                  \
   V(domains_stack_array, v8::Array)                                           \
-  V(generic_internal_field_template, v8::ObjectTemplate)                      \
   V(jsstream_constructor_template, v8::FunctionTemplate)                      \
   V(module_load_list_array, v8::Array)                                        \
+  V(pbkdf2_constructor_template, v8::ObjectTemplate)                          \
   V(pipe_constructor_template, v8::FunctionTemplate)                          \
   V(process_object, v8::Object)                                               \
   V(promise_reject_function, v8::Function)                                    \
   V(push_values_to_array_function, v8::Function)                              \
+  V(randombytes_constructor_template, v8::ObjectTemplate)                     \
   V(script_context_constructor_template, v8::FunctionTemplate)                \
   V(script_data_constructor_function, v8::Function)                           \
   V(secure_context_constructor_template, v8::FunctionTemplate)                \
@@ -534,8 +535,6 @@ class Environment {
                                 const char* name,
                                 v8::FunctionCallback callback);
 
-  inline v8::Local<v8::Object> NewInternalFieldObject();
-
   void AtExit(void (*cb)(void* arg), void* arg);
   void RunAtExitCallbacks();
 

diff --git a/src/node_crypto.cc b/src/node_crypto.cc
@@ -107,6 +107,7 @@ using v8::Maybe;
 using v8::MaybeLocal;
 using v8::Null;
 using v8::Object;
+using v8::ObjectTemplate;
 using v8::Persistent;
 using v8::PropertyAttribute;
 using v8::PropertyCallbackInfo;
@@ -5532,7 +5533,8 @@ void PBKDF2(const FunctionCallbackInfo<Value>& args) {
     digest = EVP_sha1();
   }
 
-  obj = env->NewInternalFieldObject();
+  obj = env->pbkdf2_constructor_template()->
+      NewInstance(env->context()).ToLocalChecked();
   req = new PBKDF2Request(env,
                           obj,
                           digest,
@@ -5736,7 +5738,8 @@ void RandomBytes(const FunctionCallbackInfo<Value>& args) {
   if (size < 0 || size > Buffer::kMaxLength)
     return env->ThrowRangeError("size is not a valid Smi");
 
-  Local<Object> obj = env->NewInternalFieldObject();
+  Local<Object> obj = env->randombytes_constructor_template()->
+      NewInstance(env->context()).ToLocalChecked();
   char* data = node::Malloc(size);
   RandomBytesRequest* req =
       new RandomBytesRequest(env,
@@ -5774,7 +5777,8 @@ void RandomBytesBuffer(const FunctionCallbackInfo<Value>& args) {
   int64_t offset = args[1]->IntegerValue();
   int64_t size = args[2]->IntegerValue();
 
-  Local<Object> obj = env->NewInternalFieldObject();
+  Local<Object> obj = env->randombytes_constructor_template()->
+      NewInstance(env->context()).ToLocalChecked();
   obj->Set(env->context(), env->buffer_string(), args[0]).FromJust();
   char* data = Buffer::Data(args[0]);
   data += offset;
@@ -6251,6 +6255,18 @@ void InitCrypto(Local<Object> target,
                  PublicKeyCipher::Cipher<PublicKeyCipher::kPublic,
                                          EVP_PKEY_verify_recover_init,
                                          EVP_PKEY_verify_recover>);
+
+  Local<FunctionTemplate> pb = FunctionTemplate::New(env->isolate());
+  pb->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "PBKDF2"));
+  Local<ObjectTemplate> pbt = pb->InstanceTemplate();
+  pbt->SetInternalFieldCount(1);
+  env->set_pbkdf2_constructor_template(pbt);
+
+  Local<FunctionTemplate> rb = FunctionTemplate::New(env->isolate());
+  rb->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "RandomBytes"));
+  Local<ObjectTemplate> rbt = rb->InstanceTemplate();
+  rbt->SetInternalFieldCount(1);
+  env->set_randombytes_constructor_template(rbt);
 }
 
 }  // namespace crypto