Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	tcp_wrap.cc	Lines:	203	213	95.3 %
Date:	2022-12-07 04:23:16	Branches:	58	102	56.9 %


// 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 "tcp_wrap.h"

#include "connect_wrap.h"
#include "connection_wrap.h"
#include "env-inl.h"
#include "handle_wrap.h"
#include "node_buffer.h"
#include "node_external_reference.h"
#include "node_internals.h"
#include "stream_base-inl.h"
#include "stream_wrap.h"
#include "util-inl.h"

#include <cstdlib>


namespace node {

using v8::Boolean;
using v8::Context;
using v8::EscapableHandleScope;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::Int32;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::MaybeLocal;
using v8::Object;
using v8::String;
using v8::Uint32;
using v8::Value;

MaybeLocal<Object> TCPWrap::Instantiate(Environment* env,
                                        AsyncWrap* parent,
                                        TCPWrap::SocketType type) {
  EscapableHandleScope handle_scope(env->isolate());
  AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(parent);
  CHECK_EQ(env->tcp_constructor_template().IsEmpty(), false);
  Local<Function> constructor = env->tcp_constructor_template()
                                    ->GetFunction(env->context())
                                    .ToLocalChecked();
  CHECK_EQ(constructor.IsEmpty(), false);
  Local<Value> type_value = Int32::New(env->isolate(), type);
  return handle_scope.EscapeMaybe(
      constructor->NewInstance(env->context(), 1, &type_value));
}


void TCPWrap::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);

  // Init properties
  t->InstanceTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "reading"),
                             Boolean::New(env->isolate(), false));
  t->InstanceTemplate()->Set(env->owner_symbol(), Null(env->isolate()));
  t->InstanceTemplate()->Set(env->onconnection_string(), Null(env->isolate()));

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

  SetProtoMethod(isolate, t, "open", Open);
  SetProtoMethod(isolate, t, "bind", Bind);
  SetProtoMethod(isolate, t, "listen", Listen);
  SetProtoMethod(isolate, t, "connect", Connect);
  SetProtoMethod(isolate, t, "bind6", Bind6);
  SetProtoMethod(isolate, t, "connect6", Connect6);
  SetProtoMethod(isolate,
                 t,
                 "getsockname",
                 GetSockOrPeerName<TCPWrap, uv_tcp_getsockname>);
  SetProtoMethod(isolate,
                 t,
                 "getpeername",
                 GetSockOrPeerName<TCPWrap, uv_tcp_getpeername>);
  SetProtoMethod(isolate, t, "setNoDelay", SetNoDelay);
  SetProtoMethod(isolate, t, "setKeepAlive", SetKeepAlive);
  SetProtoMethod(isolate, t, "reset", Reset);

#ifdef _WIN32
  SetProtoMethod(isolate, t, "setSimultaneousAccepts", SetSimultaneousAccepts);
#endif

  SetConstructorFunction(context, target, "TCP", t);
  env->set_tcp_constructor_template(t);

  // Create FunctionTemplate for TCPConnectWrap.
  Local<FunctionTemplate> cwt =
      BaseObject::MakeLazilyInitializedJSTemplate(env);
  cwt->Inherit(AsyncWrap::GetConstructorTemplate(env));
  SetConstructorFunction(context, target, "TCPConnectWrap", cwt);

  // Define constants
  Local<Object> constants = Object::New(env->isolate());
  NODE_DEFINE_CONSTANT(constants, SOCKET);
  NODE_DEFINE_CONSTANT(constants, SERVER);
  NODE_DEFINE_CONSTANT(constants, UV_TCP_IPV6ONLY);
  target->Set(context,
              env->constants_string(),
              constants).Check();
}

void TCPWrap::RegisterExternalReferences(ExternalReferenceRegistry* registry) {
  registry->Register(New);
  registry->Register(Open);
  registry->Register(Bind);
  registry->Register(Listen);
  registry->Register(Connect);
  registry->Register(Bind6);
  registry->Register(Connect6);

  registry->Register(GetSockOrPeerName<TCPWrap, uv_tcp_getsockname>);
  registry->Register(GetSockOrPeerName<TCPWrap, uv_tcp_getpeername>);
  registry->Register(SetNoDelay);
  registry->Register(SetKeepAlive);
  registry->Register(Reset);
#ifdef _WIN32
  registry->Register(SetSimultaneousAccepts);
#endif
}

void TCPWrap::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();
  TCPWrap::SocketType type = static_cast<TCPWrap::SocketType>(type_value);

  ProviderType provider;
  switch (type) {
    case SOCKET:
      provider = PROVIDER_TCPWRAP;
      break;
    case SERVER:
      provider = PROVIDER_TCPSERVERWRAP;
      break;
    default:
      UNREACHABLE();
  }

  new TCPWrap(env, args.This(), provider);
}


TCPWrap::TCPWrap(Environment* env, Local<Object> object, ProviderType provider)
    : ConnectionWrap(env, object, provider) {
  int r = uv_tcp_init(env->event_loop(), &handle_);
  CHECK_EQ(r, 0);  // How do we proxy this error up to javascript?
                   // Suggestion: uv_tcp_init() returns void.
}


void TCPWrap::SetNoDelay(const FunctionCallbackInfo<Value>& args) {
  TCPWrap* wrap;
  ASSIGN_OR_RETURN_UNWRAP(&wrap,
                          args.Holder(),
                          args.GetReturnValue().Set(UV_EBADF));
  int enable = static_cast<int>(args[0]->IsTrue());
  int err = uv_tcp_nodelay(&wrap->handle_, enable);
  args.GetReturnValue().Set(err);
}


void TCPWrap::SetKeepAlive(const FunctionCallbackInfo<Value>& args) {
  TCPWrap* wrap;
  ASSIGN_OR_RETURN_UNWRAP(&wrap,
                          args.Holder(),
                          args.GetReturnValue().Set(UV_EBADF));
  Environment* env = wrap->env();
  int enable;
  if (!args[0]->Int32Value(env->context()).To(&enable)) return;
  unsigned int delay = static_cast<unsigned int>(args[1].As<Uint32>()->Value());
  int err = uv_tcp_keepalive(&wrap->handle_, enable, delay);
  args.GetReturnValue().Set(err);
}


#ifdef _WIN32
void TCPWrap::SetSimultaneousAccepts(const FunctionCallbackInfo<Value>& args) {
  TCPWrap* wrap;
  ASSIGN_OR_RETURN_UNWRAP(&wrap,
                          args.Holder(),
                          args.GetReturnValue().Set(UV_EBADF));
  bool enable = args[0]->IsTrue();
  int err = uv_tcp_simultaneous_accepts(&wrap->handle_, enable);
  args.GetReturnValue().Set(err);
}
#endif


void TCPWrap::Open(const FunctionCallbackInfo<Value>& args) {
  TCPWrap* wrap;
  ASSIGN_OR_RETURN_UNWRAP(&wrap,
                          args.Holder(),
                          args.GetReturnValue().Set(UV_EBADF));
  int64_t val;
  if (!args[0]->IntegerValue(args.GetIsolate()->GetCurrentContext()).To(&val))
    return;
  int fd = static_cast<int>(val);
  int err = uv_tcp_open(&wrap->handle_, fd);

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

  args.GetReturnValue().Set(err);
}

template <typename T>
void TCPWrap::Bind(
    const FunctionCallbackInfo<Value>& args,
    int family,
    std::function<int(const char* ip_address, int port, T* addr)> uv_ip_addr) {
  TCPWrap* wrap;
  ASSIGN_OR_RETURN_UNWRAP(&wrap,
                          args.Holder(),
                          args.GetReturnValue().Set(UV_EBADF));
  Environment* env = wrap->env();
  node::Utf8Value ip_address(env->isolate(), args[0]);
  int port;
  unsigned int flags = 0;
  if (!args[1]->Int32Value(env->context()).To(&port)) return;
  if (family == AF_INET6 &&
      !args[2]->Uint32Value(env->context()).To(&flags)) {
    return;
  }

  T addr;
  int err = uv_ip_addr(*ip_address, port, &addr);

  if (err == 0) {
    err = uv_tcp_bind(&wrap->handle_,
                      reinterpret_cast<const sockaddr*>(&addr),
                      flags);
  }
  args.GetReturnValue().Set(err);
}

void TCPWrap::Bind(const FunctionCallbackInfo<Value>& args) {
  Bind<sockaddr_in>(args, AF_INET, uv_ip4_addr);
}


void TCPWrap::Bind6(const FunctionCallbackInfo<Value>& args) {
  Bind<sockaddr_in6>(args, AF_INET6, uv_ip6_addr);
}


void TCPWrap::Listen(const FunctionCallbackInfo<Value>& args) {
  TCPWrap* wrap;
  ASSIGN_OR_RETURN_UNWRAP(&wrap,
                          args.Holder(),
                          args.GetReturnValue().Set(UV_EBADF));
  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 TCPWrap::Connect(const FunctionCallbackInfo<Value>& args) {
  CHECK(args[2]->IsUint32());
  // explicit cast to fit to libuv's type expectation
  int port = static_cast<int>(args[2].As<Uint32>()->Value());
  Connect<sockaddr_in>(args,
                       [port](const char* ip_address, sockaddr_in* addr) {
      return uv_ip4_addr(ip_address, port, addr);
  });
}


void TCPWrap::Connect6(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  CHECK(args[2]->IsUint32());
  int port;
  if (!args[2]->Int32Value(env->context()).To(&port)) return;
  Connect<sockaddr_in6>(args,
                        [port](const char* ip_address, sockaddr_in6* addr) {
      return uv_ip6_addr(ip_address, port, addr);
  });
}

template <typename T>
void TCPWrap::Connect(const FunctionCallbackInfo<Value>& args,
    std::function<int(const char* ip_address, T* addr)> uv_ip_addr) {
  Environment* env = Environment::GetCurrent(args);

  TCPWrap* wrap;
  ASSIGN_OR_RETURN_UNWRAP(&wrap,
                          args.Holder(),
                          args.GetReturnValue().Set(UV_EBADF));

  CHECK(args[0]->IsObject());
  CHECK(args[1]->IsString());

  Local<Object> req_wrap_obj = args[0].As<Object>();
  node::Utf8Value ip_address(env->isolate(), args[1]);

  T addr;
  int err = uv_ip_addr(*ip_address, &addr);

  if (err == 0) {
    AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(wrap);
    ConnectWrap* req_wrap =
        new ConnectWrap(env, req_wrap_obj, AsyncWrap::PROVIDER_TCPCONNECTWRAP);
    err = req_wrap->Dispatch(uv_tcp_connect,
                             &wrap->handle_,
                             reinterpret_cast<const sockaddr*>(&addr),
                             AfterConnect);
    if (err) {
      delete req_wrap;
    } else {
      CHECK(args[2]->Uint32Value(env->context()).IsJust());
      int port = args[2]->Uint32Value(env->context()).FromJust();
      TRACE_EVENT_NESTABLE_ASYNC_BEGIN2(TRACING_CATEGORY_NODE2(net, native),
                                        "connect",
                                        req_wrap,
                                        "ip",
                                        TRACE_STR_COPY(*ip_address),
                                        "port",
                                        port);
    }
  }

  args.GetReturnValue().Set(err);
}
void TCPWrap::Reset(const FunctionCallbackInfo<Value>& args) {
  TCPWrap* wrap;
  ASSIGN_OR_RETURN_UNWRAP(
      &wrap, args.Holder(), args.GetReturnValue().Set(UV_EBADF));

  int err = wrap->Reset(args[0]);

  args.GetReturnValue().Set(err);
}

int TCPWrap::Reset(Local<Value> close_callback) {
  if (state_ != kInitialized) return 0;

  int err = uv_tcp_close_reset(&handle_, OnClose);
  state_ = kClosing;
  if (!err & !close_callback.IsEmpty() && close_callback->IsFunction() &&
      !persistent().IsEmpty()) {
    object()
        ->Set(env()->context(), env()->handle_onclose_symbol(), close_callback)
        .Check();
  }
  return err;
}

// also used by udp_wrap.cc
MaybeLocal<Object> AddressToJS(Environment* env,
                               const sockaddr* addr,
                               Local<Object> info) {
  EscapableHandleScope scope(env->isolate());
  char ip[INET6_ADDRSTRLEN + UV_IF_NAMESIZE];
  const sockaddr_in* a4;
  const sockaddr_in6* a6;

  int port;

  if (info.IsEmpty())
    info = Object::New(env->isolate());

  switch (addr->sa_family) {
  case AF_INET6:
    a6 = reinterpret_cast<const sockaddr_in6*>(addr);
    uv_inet_ntop(AF_INET6, &a6->sin6_addr, ip, sizeof ip);
    // Add an interface identifier to a link local address.
    if (IN6_IS_ADDR_LINKLOCAL(&a6->sin6_addr) && a6->sin6_scope_id > 0) {
      const size_t addrlen = strlen(ip);
      CHECK_LT(addrlen, sizeof(ip));
      ip[addrlen] = '%';
      size_t scopeidlen = sizeof(ip) - addrlen - 1;
      CHECK_GE(scopeidlen, UV_IF_NAMESIZE);
      const int r = uv_if_indextoiid(a6->sin6_scope_id,
                                     ip + addrlen + 1,
                                     &scopeidlen);
      if (r) {
        env->ThrowUVException(r, "uv_if_indextoiid");
        return {};
      }
    }
    port = ntohs(a6->sin6_port);
    info->Set(env->context(),
              env->address_string(),
              OneByteString(env->isolate(), ip)).Check();
    info->Set(env->context(), env->family_string(), env->ipv6_string()).Check();
    info->Set(env->context(),
              env->port_string(),
              Integer::New(env->isolate(), port)).Check();
    break;

  case AF_INET:
    a4 = reinterpret_cast<const sockaddr_in*>(addr);
    uv_inet_ntop(AF_INET, &a4->sin_addr, ip, sizeof ip);
    port = ntohs(a4->sin_port);
    info->Set(env->context(),
              env->address_string(),
              OneByteString(env->isolate(), ip)).Check();
    info->Set(env->context(), env->family_string(), env->ipv4_string()).Check();
    info->Set(env->context(),
              env->port_string(),
              Integer::New(env->isolate(), port)).Check();
    break;

  default:
    info->Set(env->context(),
              env->address_string(),
              String::Empty(env->isolate())).Check();
  }

  return scope.Escape(info);
}


}  // namespace node

NODE_BINDING_CONTEXT_AWARE_INTERNAL(tcp_wrap, node::TCPWrap::Initialize)
NODE_BINDING_EXTERNAL_REFERENCE(tcp_wrap,
                                node::TCPWrap::RegisterExternalReferences)


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			// Copyright Joyent, Inc. and other Node contributors.
2			//
3			// Permission is hereby granted, free of charge, to any person obtaining a
4			// copy of this software and associated documentation files (the
5			// "Software"), to deal in the Software without restriction, including
6			// without limitation the rights to use, copy, modify, merge, publish,
7			// distribute, sublicense, and/or sell copies of the Software, and to permit
8			// persons to whom the Software is furnished to do so, subject to the
9			// following conditions:
10			//
11			// The above copyright notice and this permission notice shall be included
12			// in all copies or substantial portions of the Software.
13			//
14			// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15			// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16			// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
17			// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
18			// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19			// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20			// USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22			#include "tcp_wrap.h"
23
24			#include "connect_wrap.h"
25			#include "connection_wrap.h"
26			#include "env-inl.h"
27			#include "handle_wrap.h"
28			#include "node_buffer.h"
29			#include "node_external_reference.h"
30			#include "node_internals.h"
31			#include "stream_base-inl.h"
32			#include "stream_wrap.h"
33			#include "util-inl.h"
34
35			#include <cstdlib>
36
37
38			namespace node {
39
40			using v8::Boolean;
41			using v8::Context;
42			using v8::EscapableHandleScope;
43			using v8::Function;
44			using v8::FunctionCallbackInfo;
45			using v8::FunctionTemplate;
46			using v8::Int32;
47			using v8::Integer;
48			using v8::Isolate;
49			using v8::Local;
50			using v8::MaybeLocal;
51			using v8::Object;
52			using v8::String;
53			using v8::Uint32;
54			using v8::Value;
55
56		5048	MaybeLocal<Object> TCPWrap::Instantiate(Environment* env,
57			AsyncWrap* parent,
58			TCPWrap::SocketType type) {
59		5048	EscapableHandleScope handle_scope(env->isolate());
60		5048	AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(parent);
61	✗✓	10096	CHECK_EQ(env->tcp_constructor_template().IsEmpty(), false);
62		5048	Local<Function> constructor = env->tcp_constructor_template()
63		5048	->GetFunction(env->context())
64		5048	.ToLocalChecked();
65	✗✓	5048	CHECK_EQ(constructor.IsEmpty(), false);
66		10096	Local<Value> type_value = Int32::New(env->isolate(), type);
67			return handle_scope.EscapeMaybe(
68		10096	constructor->NewInstance(env->context(), 1, &type_value));
69			}
70
71
72		6391	void TCPWrap::Initialize(Local<Object> target,
73			Local<Value> unused,
74			Local<Context> context,
75			void* priv) {
76		6391	Environment* env = Environment::GetCurrent(context);
77		6391	Isolate* isolate = env->isolate();
78
79		6391	Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
80		12782	t->InstanceTemplate()->SetInternalFieldCount(StreamBase::kInternalFieldCount);
81
82			// Init properties
83		25564	t->InstanceTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "reading"),
84			Boolean::New(env->isolate(), false));
85		25564	t->InstanceTemplate()->Set(env->owner_symbol(), Null(env->isolate()));
86		25564	t->InstanceTemplate()->Set(env->onconnection_string(), Null(env->isolate()));
87
88		6391	t->Inherit(LibuvStreamWrap::GetConstructorTemplate(env));
89
90		6391	SetProtoMethod(isolate, t, "open", Open);
91		6391	SetProtoMethod(isolate, t, "bind", Bind);
92		6391	SetProtoMethod(isolate, t, "listen", Listen);
93		6391	SetProtoMethod(isolate, t, "connect", Connect);
94		6391	SetProtoMethod(isolate, t, "bind6", Bind6);
95		6391	SetProtoMethod(isolate, t, "connect6", Connect6);
96		6391	SetProtoMethod(isolate,
97			t,
98			"getsockname",
99			GetSockOrPeerName<TCPWrap, uv_tcp_getsockname>);
100		6391	SetProtoMethod(isolate,
101			t,
102			"getpeername",
103			GetSockOrPeerName<TCPWrap, uv_tcp_getpeername>);
104		6391	SetProtoMethod(isolate, t, "setNoDelay", SetNoDelay);
105		6391	SetProtoMethod(isolate, t, "setKeepAlive", SetKeepAlive);
106		6391	SetProtoMethod(isolate, t, "reset", Reset);
107
108			#ifdef _WIN32
109			SetProtoMethod(isolate, t, "setSimultaneousAccepts", SetSimultaneousAccepts);
110			#endif
111
112		6391	SetConstructorFunction(context, target, "TCP", t);
113		6391	env->set_tcp_constructor_template(t);
114
115			// Create FunctionTemplate for TCPConnectWrap.
116			Local<FunctionTemplate> cwt =
117		6391	BaseObject::MakeLazilyInitializedJSTemplate(env);
118		6391	cwt->Inherit(AsyncWrap::GetConstructorTemplate(env));
119		6391	SetConstructorFunction(context, target, "TCPConnectWrap", cwt);
120
121			// Define constants
122		6391	Local<Object> constants = Object::New(env->isolate());
123		19173	NODE_DEFINE_CONSTANT(constants, SOCKET);
124		19173	NODE_DEFINE_CONSTANT(constants, SERVER);
125		19173	NODE_DEFINE_CONSTANT(constants, UV_TCP_IPV6ONLY);
126		6391	target->Set(context,
127			env->constants_string(),
128		12782	constants).Check();
129		6391	}
130
131		5639	void TCPWrap::RegisterExternalReferences(ExternalReferenceRegistry* registry) {
132		5639	registry->Register(New);
133		5639	registry->Register(Open);
134		5639	registry->Register(Bind);
135		5639	registry->Register(Listen);
136		5639	registry->Register(Connect);
137		5639	registry->Register(Bind6);
138		5639	registry->Register(Connect6);
139
140		5639	registry->Register(GetSockOrPeerName<TCPWrap, uv_tcp_getsockname>);
141		5639	registry->Register(GetSockOrPeerName<TCPWrap, uv_tcp_getpeername>);
142		5639	registry->Register(SetNoDelay);
143		5639	registry->Register(SetKeepAlive);
144		5639	registry->Register(Reset);
145			#ifdef _WIN32
146			registry->Register(SetSimultaneousAccepts);
147			#endif
148		5639	}
149
150		12897	void TCPWrap::New(const FunctionCallbackInfo<Value>& args) {
151			// This constructor should not be exposed to public javascript.
152			// Therefore we assert that we are not trying to call this as a
153			// normal function.
154	✗✓	12897	CHECK(args.IsConstructCall());
155	✗✓	12897	CHECK(args[0]->IsInt32());
156		12897	Environment* env = Environment::GetCurrent(args);
157
158		25794	int type_value = args[0].As<Int32>()->Value();
159		12897	TCPWrap::SocketType type = static_cast<TCPWrap::SocketType>(type_value);
160
161			ProviderType provider;
162	✓✓✗	12897	switch (type) {
163		11071	case SOCKET:
164		11071	provider = PROVIDER_TCPWRAP;
165		11071	break;
166		1826	case SERVER:
167		1826	provider = PROVIDER_TCPSERVERWRAP;
168		1826	break;
169			default:
170			UNREACHABLE();
171			}
172
173		12897	new TCPWrap(env, args.This(), provider);
174		12897	}
175
176
177		12897	TCPWrap::TCPWrap(Environment* env, Local<Object> object, ProviderType provider)
178		12897	: ConnectionWrap(env, object, provider) {
179		12897	int r = uv_tcp_init(env->event_loop(), &handle_);
180	✗✓	12897	CHECK_EQ(r, 0); // How do we proxy this error up to javascript?
181			// Suggestion: uv_tcp_init() returns void.
182		12897	}
183
184
185		5793	void TCPWrap::SetNoDelay(const FunctionCallbackInfo<Value>& args) {
186			TCPWrap* wrap;
187	✗✓	5793	ASSIGN_OR_RETURN_UNWRAP(&wrap,
188			args.Holder(),
189			args.GetReturnValue().Set(UV_EBADF));
190		5793	int enable = static_cast<int>(args[0]->IsTrue());
191		5793	int err = uv_tcp_nodelay(&wrap->handle_, enable);
192		11586	args.GetReturnValue().Set(err);
193			}
194
195
196		2401	void TCPWrap::SetKeepAlive(const FunctionCallbackInfo<Value>& args) {
197			TCPWrap* wrap;
198	✗✓	2401	ASSIGN_OR_RETURN_UNWRAP(&wrap,
199			args.Holder(),
200			args.GetReturnValue().Set(UV_EBADF));
201		2401	Environment* env = wrap->env();
202			int enable;
203	✗✓	4802	if (!args[0]->Int32Value(env->context()).To(&enable)) return;
204		4802	unsigned int delay = static_cast<unsigned int>(args[1].As<Uint32>()->Value());
205		2401	int err = uv_tcp_keepalive(&wrap->handle_, enable, delay);
206		4802	args.GetReturnValue().Set(err);
207			}
208
209
210			#ifdef _WIN32
211			void TCPWrap::SetSimultaneousAccepts(const FunctionCallbackInfo<Value>& args) {
212			TCPWrap* wrap;
213			ASSIGN_OR_RETURN_UNWRAP(&wrap,
214			args.Holder(),
215			args.GetReturnValue().Set(UV_EBADF));
216			bool enable = args[0]->IsTrue();
217			int err = uv_tcp_simultaneous_accepts(&wrap->handle_, enable);
218			args.GetReturnValue().Set(err);
219			}
220			#endif
221
222
223		2	void TCPWrap::Open(const FunctionCallbackInfo<Value>& args) {
224			TCPWrap* wrap;
225	✗✓	2	ASSIGN_OR_RETURN_UNWRAP(&wrap,
226			args.Holder(),
227			args.GetReturnValue().Set(UV_EBADF));
228			int64_t val;
229	✗✓	4	if (!args[0]->IntegerValue(args.GetIsolate()->GetCurrentContext()).To(&val))
230			return;
231		2	int fd = static_cast<int>(val);
232		2	int err = uv_tcp_open(&wrap->handle_, fd);
233
234	✓✗	2	if (err == 0)
235		2	wrap->set_fd(fd);
236
237		4	args.GetReturnValue().Set(err);
238			}
239
240			template <typename T>
241		3698	void TCPWrap::Bind(
242			const FunctionCallbackInfo<Value>& args,
243			int family,
244			std::function<int(const char* ip_address, int port, T* addr)> uv_ip_addr) {
245			TCPWrap* wrap;
246	✗✓	3698	ASSIGN_OR_RETURN_UNWRAP(&wrap,
247			args.Holder(),
248			args.GetReturnValue().Set(UV_EBADF));
249		3698	Environment* env = wrap->env();
250		3698	node::Utf8Value ip_address(env->isolate(), args[0]);
251			int port;
252	✓✗	3698	unsigned int flags = 0;
253	✗✓	7396	if (!args[1]->Int32Value(env->context()).To(&port)) return;
254	✓✓	7110	if (family == AF_INET6 &&
255	✗✓✗✓	10522	!args[2]->Uint32Value(env->context()).To(&flags)) {
256			return;
257			}
258
259			T addr;
260		3698	int err = uv_ip_addr(*ip_address, port, &addr);
261
262	✓✓	3698	if (err == 0) {
263		3694	err = uv_tcp_bind(&wrap->handle_,
264			reinterpret_cast<const sockaddr*>(&addr),
265			flags);
266			}
267		7396	args.GetReturnValue().Set(err);
268			}
269
270		143	void TCPWrap::Bind(const FunctionCallbackInfo<Value>& args) {
271		143	Bind<sockaddr_in>(args, AF_INET, uv_ip4_addr);
272		143	}
273
274
275		1706	void TCPWrap::Bind6(const FunctionCallbackInfo<Value>& args) {
276		1706	Bind<sockaddr_in6>(args, AF_INET6, uv_ip6_addr);
277		1706	}
278
279
280		1832	void TCPWrap::Listen(const FunctionCallbackInfo<Value>& args) {
281			TCPWrap* wrap;
282	✗✓	1832	ASSIGN_OR_RETURN_UNWRAP(&wrap,
283			args.Holder(),
284			args.GetReturnValue().Set(UV_EBADF));
285		1832	Environment* env = wrap->env();
286			int backlog;
287	✗✓	3664	if (!args[0]->Int32Value(env->context()).To(&backlog)) return;
288		1832	int err = uv_listen(reinterpret_cast<uv_stream_t*>(&wrap->handle_),
289			backlog,
290			OnConnection);
291		3664	args.GetReturnValue().Set(err);
292			}
293
294
295	✓✗	649	void TCPWrap::Connect(const FunctionCallbackInfo<Value>& args) {
296	✗✓	649	CHECK(args[2]->IsUint32());
297			// explicit cast to fit to libuv's type expectation
298		1298	int port = static_cast<int>(args[2].As<Uint32>()->Value());
299		649	Connect<sockaddr_in>(args,
300		649	[port](const char* ip_address, sockaddr_in* addr) {
301		649	return uv_ip4_addr(ip_address, port, addr);
302			});
303		649	}
304
305
306		4849	void TCPWrap::Connect6(const FunctionCallbackInfo<Value>& args) {
307		4849	Environment* env = Environment::GetCurrent(args);
308	✗✓	4849	CHECK(args[2]->IsUint32());
309			int port;
310	✗✓	9698	if (!args[2]->Int32Value(env->context()).To(&port)) return;
311		4849	Connect<sockaddr_in6>(args,
312		4849	[port](const char* ip_address, sockaddr_in6* addr) {
313		4849	return uv_ip6_addr(ip_address, port, addr);
314			});
315			}
316
317			template <typename T>
318		10996	void TCPWrap::Connect(const FunctionCallbackInfo<Value>& args,
319			std::function<int(const char* ip_address, T* addr)> uv_ip_addr) {
320		10996	Environment* env = Environment::GetCurrent(args);
321
322			TCPWrap* wrap;
323	✗✓	10996	ASSIGN_OR_RETURN_UNWRAP(&wrap,
324			args.Holder(),
325			args.GetReturnValue().Set(UV_EBADF));
326
327	✗✓	10996	CHECK(args[0]->IsObject());
328	✗✓	21992	CHECK(args[1]->IsString());
329
330	✓✗	21992	Local<Object> req_wrap_obj = args[0].As<Object>();
331		10996	node::Utf8Value ip_address(env->isolate(), args[1]);
332
333			T addr;
334		10996	int err = uv_ip_addr(*ip_address, &addr);
335
336	✓✗	10996	if (err == 0) {
337		21992	AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(wrap);
338		21992	ConnectWrap* req_wrap =
339		10996	new ConnectWrap(env, req_wrap_obj, AsyncWrap::PROVIDER_TCPCONNECTWRAP);
340		21992	err = req_wrap->Dispatch(uv_tcp_connect,
341		10996	&wrap->handle_,
342			reinterpret_cast<const sockaddr*>(&addr),
343			AfterConnect);
344	✗✓	10996	if (err) {
345			delete req_wrap;
346			} else {
347	✗✓	21992	CHECK(args[2]->Uint32Value(env->context()).IsJust());
348		21992	int port = args[2]->Uint32Value(env->context()).FromJust();
349	✓✓✓✓	12910	TRACE_EVENT_NESTABLE_ASYNC_BEGIN2(TRACING_CATEGORY_NODE2(net, native),
350			"connect",
351			req_wrap,
352			"ip",
353			TRACE_STR_COPY(*ip_address),
354			"port",
355			port);
356			}
357			}
358
359		21992	args.GetReturnValue().Set(err);
360			}
361		5	void TCPWrap::Reset(const FunctionCallbackInfo<Value>& args) {
362			TCPWrap* wrap;
363	✗✓	5	ASSIGN_OR_RETURN_UNWRAP(
364			&wrap, args.Holder(), args.GetReturnValue().Set(UV_EBADF));
365
366	✓✗	10	int err = wrap->Reset(args[0]);
367
368		10	args.GetReturnValue().Set(err);
369			}
370
371		5	int TCPWrap::Reset(Local<Value> close_callback) {
372	✗✓	5	if (state_ != kInitialized) return 0;
373
374		5	int err = uv_tcp_close_reset(&handle_, OnClose);
375		5	state_ = kClosing;
376	✓✗✓✗ ✓✗	15	if (!err & !close_callback.IsEmpty() && close_callback->IsFunction() &&
377	✓✗	5	!persistent().IsEmpty()) {
378		5	object()
379		15	->Set(env()->context(), env()->handle_onclose_symbol(), close_callback)
380			.Check();
381			}
382		5	return err;
383			}
384
385			// also used by udp_wrap.cc
386		4940	MaybeLocal<Object> AddressToJS(Environment* env,
387			const sockaddr* addr,
388			Local<Object> info) {
389		4940	EscapableHandleScope scope(env->isolate());
390			char ip[INET6_ADDRSTRLEN + UV_IF_NAMESIZE];
391			const sockaddr_in* a4;
392			const sockaddr_in6* a6;
393
394			int port;
395
396	✓✓	4940	if (info.IsEmpty())
397		363	info = Object::New(env->isolate());
398
399	✓✓✗	4940	switch (addr->sa_family) {
400		4290	case AF_INET6:
401		4290	a6 = reinterpret_cast<const sockaddr_in6*>(addr);
402		4290	uv_inet_ntop(AF_INET6, &a6->sin6_addr, ip, sizeof ip);
403			// Add an interface identifier to a link local address.
404	✓✓✓✗ ✓✓	4290	if (IN6_IS_ADDR_LINKLOCAL(&a6->sin6_addr) && a6->sin6_scope_id > 0) {
405		2	const size_t addrlen = strlen(ip);
406	✗✓	2	CHECK_LT(addrlen, sizeof(ip));
407		2	ip[addrlen] = '%';
408		2	size_t scopeidlen = sizeof(ip) - addrlen - 1;
409	✗✓	2	CHECK_GE(scopeidlen, UV_IF_NAMESIZE);
410		2	const int r = uv_if_indextoiid(a6->sin6_scope_id,
411		2	ip + addrlen + 1,
412			&scopeidlen);
413	✗✓	2	if (r) {
414			env->ThrowUVException(r, "uv_if_indextoiid");
415			return {};
416			}
417			}
418		4290	port = ntohs(a6->sin6_port);
419		4290	info->Set(env->context(),
420			env->address_string(),
421		17160	OneByteString(env->isolate(), ip)).Check();
422		17160	info->Set(env->context(), env->family_string(), env->ipv6_string()).Check();
423		4290	info->Set(env->context(),
424			env->port_string(),
425		12870	Integer::New(env->isolate(), port)).Check();
426		4290	break;
427
428		650	case AF_INET:
429		650	a4 = reinterpret_cast<const sockaddr_in*>(addr);
430		650	uv_inet_ntop(AF_INET, &a4->sin_addr, ip, sizeof ip);
431		650	port = ntohs(a4->sin_port);
432		650	info->Set(env->context(),
433			env->address_string(),
434		2600	OneByteString(env->isolate(), ip)).Check();
435		2600	info->Set(env->context(), env->family_string(), env->ipv4_string()).Check();
436		650	info->Set(env->context(),
437			env->port_string(),
438		1950	Integer::New(env->isolate(), port)).Check();
439		650	break;
440
441			default:
442			info->Set(env->context(),
443			env->address_string(),
444			String::Empty(env->isolate())).Check();
445			}
446
447		4940	return scope.Escape(info);
448			}
449
450
451			} // namespace node
452
453		5710	NODE_BINDING_CONTEXT_AWARE_INTERNAL(tcp_wrap, node::TCPWrap::Initialize)
454		5639	NODE_BINDING_EXTERNAL_REFERENCE(tcp_wrap,
455			node::TCPWrap::RegisterExternalReferences)