// Copyright Joyent, Inc. and other Node contributors.

//

// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to permit

// persons to whom the Software is furnished to do so, subject to the

// following conditions:

//

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN

// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

// USE OR OTHER DEALINGS IN THE SOFTWARE.

#include "pipe_wrap.h"

#include "async_wrap.h"

#include "connect_wrap.h"

#include "connection_wrap.h"

#include "env-inl.h"

#include "handle_wrap.h"

#include "node.h"

#include "node_buffer.h"

#include "node_external_reference.h"

#include "stream_base-inl.h"

#include "stream_wrap.h"

#include "util-inl.h"

namespace node {

using v8::Context;

using v8::EscapableHandleScope;

using v8::Function;

using v8::FunctionCallbackInfo;

using v8::FunctionTemplate;

using v8::Int32;

using v8::Isolate;

using v8::Local;

using v8::MaybeLocal;

using v8::Object;

using v8::Value;

MaybeLocal<Object> PipeWrap::Instantiate(Environment* env,

                                         AsyncWrap* parent,

                                         PipeWrap::SocketType type) {

  EscapableHandleScope handle_scope(env->isolate());

  AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(parent);

  CHECK_EQ(false, env->pipe_constructor_template().IsEmpty());

  Local<Function> constructor = env->pipe_constructor_template()

                                    ->GetFunction(env->context())

                                    .ToLocalChecked();

  CHECK_EQ(false, constructor.IsEmpty());

  Local<Value> type_value = Int32::New(env->isolate(), type);

  return handle_scope.EscapeMaybe(

      constructor->NewInstance(env->context(), 1, &type_value));

}

void PipeWrap::Initialize(Local<Object> target,

                          Local<Value> unused,

                          Local<Context> context,

                          void* priv) {

  Environment* env = Environment::GetCurrent(context);

  Isolate* isolate = env->isolate();

  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);

  t->InstanceTemplate()->SetInternalFieldCount(StreamBase::kInternalFieldCount);

  t->Inherit(LibuvStreamWrap::GetConstructorTemplate(env));

  SetProtoMethod(isolate, t, "bind", Bind);

  SetProtoMethod(isolate, t, "listen", Listen);

  SetProtoMethod(isolate, t, "connect", Connect);

  SetProtoMethod(isolate, t, "open", Open);

#ifdef _WIN32

  SetProtoMethod(isolate, t, "setPendingInstances", SetPendingInstances);

#endif

  SetProtoMethod(isolate, t, "fchmod", Fchmod);

  SetConstructorFunction(context, target, "Pipe", t);

  env->set_pipe_constructor_template(t);

  // Create FunctionTemplate for PipeConnectWrap.

  auto cwt = BaseObject::MakeLazilyInitializedJSTemplate(env);

  cwt->Inherit(AsyncWrap::GetConstructorTemplate(env));

  SetConstructorFunction(context, target, "PipeConnectWrap", cwt);

  // Define constants

  Local<Object> constants = Object::New(env->isolate());

  NODE_DEFINE_CONSTANT(constants, SOCKET);

  NODE_DEFINE_CONSTANT(constants, SERVER);

  NODE_DEFINE_CONSTANT(constants, IPC);

  NODE_DEFINE_CONSTANT(constants, UV_READABLE);

  NODE_DEFINE_CONSTANT(constants, UV_WRITABLE);

  target->Set(context, env->constants_string(), constants).Check();

}

void PipeWrap::RegisterExternalReferences(ExternalReferenceRegistry* registry) {

  registry->Register(New);

  registry->Register(Bind);

  registry->Register(Listen);

  registry->Register(Connect);

  registry->Register(Open);

#ifdef _WIN32

  registry->Register(SetPendingInstances);

#endif

  registry->Register(Fchmod);

}

void PipeWrap::New(const FunctionCallbackInfo<Value>& args) {

  // This constructor should not be exposed to public javascript.

  // Therefore we assert that we are not trying to call this as a

  // normal function.

  CHECK(args.IsConstructCall());

  CHECK(args[0]->IsInt32());

  Environment* env = Environment::GetCurrent(args);

  int type_value = args[0].As<Int32>()->Value();

  PipeWrap::SocketType type = static_cast<PipeWrap::SocketType>(type_value);

  bool ipc;

  ProviderType provider;

  switch (type) {

    case SOCKET:

      provider = PROVIDER_PIPEWRAP;

      ipc = false;

      break;

    case SERVER:

      provider = PROVIDER_PIPESERVERWRAP;

      ipc = false;

      break;

    case IPC:

      provider = PROVIDER_PIPEWRAP;

      ipc = true;

      break;

    default:

      UNREACHABLE();

  }

  new PipeWrap(env, args.This(), provider, ipc);

}

PipeWrap::PipeWrap(Environment* env,

                   Local<Object> object,

                   ProviderType provider,

                   bool ipc)

    : ConnectionWrap(env, object, provider) {

  int r = uv_pipe_init(env->event_loop(), &handle_, ipc);

  CHECK_EQ(r, 0);  // How do we proxy this error up to javascript?

                   // Suggestion: uv_pipe_init() returns void.

}

void PipeWrap::Bind(const FunctionCallbackInfo<Value>& args) {

  PipeWrap* wrap;

  ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());

  node::Utf8Value name(args.GetIsolate(), args[0]);

  int err = uv_pipe_bind2(&wrap->handle_, *name, name.length(), 0);

  args.GetReturnValue().Set(err);

}

#ifdef _WIN32

void PipeWrap::SetPendingInstances(const FunctionCallbackInfo<Value>& args) {

  PipeWrap* wrap;

  ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());

  CHECK(args[0]->IsInt32());

  int instances = args[0].As<Int32>()->Value();

  uv_pipe_pending_instances(&wrap->handle_, instances);

}

#endif

void PipeWrap::Fchmod(const v8::FunctionCallbackInfo<v8::Value>& args) {

  PipeWrap* wrap;

  ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());

  CHECK(args[0]->IsInt32());

  int mode = args[0].As<Int32>()->Value();

  int err = uv_pipe_chmod(&wrap->handle_, mode);

  args.GetReturnValue().Set(err);

}

void PipeWrap::Listen(const FunctionCallbackInfo<Value>& args) {

  PipeWrap* wrap;

  ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());

  Environment* env = wrap->env();

  int backlog;

  if (!args[0]->Int32Value(env->context()).To(&backlog)) return;

  int err = uv_listen(

      reinterpret_cast<uv_stream_t*>(&wrap->handle_), backlog, OnConnection);

  args.GetReturnValue().Set(err);

}

void PipeWrap::Open(const FunctionCallbackInfo<Value>& args) {

  Environment* env = Environment::GetCurrent(args);

  PipeWrap* wrap;

  ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());

  int fd;

  if (!args[0]->Int32Value(env->context()).To(&fd)) return;

  int err = uv_pipe_open(&wrap->handle_, fd);

  if (err == 0) wrap->set_fd(fd);

  args.GetReturnValue().Set(err);

}

void PipeWrap::Connect(const FunctionCallbackInfo<Value>& args) {

  Environment* env = Environment::GetCurrent(args);

  PipeWrap* wrap;

  ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());

  CHECK(args[0]->IsObject());

  CHECK(args[1]->IsString());

  Local<Object> req_wrap_obj = args[0].As<Object>();

  node::Utf8Value name(env->isolate(), args[1]);

  ConnectWrap* req_wrap =

      new ConnectWrap(env, req_wrap_obj, AsyncWrap::PROVIDER_PIPECONNECTWRAP);

  int err = req_wrap->Dispatch(

      uv_pipe_connect2, &wrap->handle_, *name, name.length(), 0, AfterConnect);

  if (err) {

    delete req_wrap;

  } else {

    const char* path_type = (*name)[0] == '\0' ? "abstract socket" : "file";

    const char* pipe_path = (*name)[0] == '\0' ? (*name) + 1 : *name;

    TRACE_EVENT_NESTABLE_ASYNC_BEGIN2(TRACING_CATEGORY_NODE2(net, native),

                                      "connect",

                                      req_wrap,

                                      "path_type",

                                      path_type,

                                      "pipe_path",

                                      TRACE_STR_COPY(pipe_path));

  }

  args.GetReturnValue().Set(err);

}

}  // namespace node

NODE_BINDING_CONTEXT_AWARE_INTERNAL(pipe_wrap, node::PipeWrap::Initialize)

NODE_BINDING_EXTERNAL_REFERENCE(pipe_wrap,

                                node::PipeWrap::RegisterExternalReferences)