Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	tcp_wrap.cc	Lines:	186	196	94.9 %
Date:	2022-05-21 04:15:56	Branches:	51	96	53.1 %


// 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::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);

  Local<FunctionTemplate> t = env->NewFunctionTemplate(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));

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

#ifdef _WIN32
  env->SetProtoMethod(t, "setSimultaneousAccepts", SetSimultaneousAccepts);
#endif

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

  // Create FunctionTemplate for TCPConnectWrap.
  Local<FunctionTemplate> cwt =
      BaseObject::MakeLazilyInitializedJSTemplate(env);
  cwt->Inherit(AsyncWrap::GetConstructorTemplate(env));
  env->SetConstructorFunction(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);
#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;
  }

  args.GetReturnValue().Set(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(),
              Integer::New(env->isolate(), 6)).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(),
              Integer::New(env->isolate(), 4)).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_MODULE_CONTEXT_AWARE_INTERNAL(tcp_wrap, node::TCPWrap::Initialize)
NODE_MODULE_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::Local;
49			using v8::MaybeLocal;
50			using v8::Object;
51			using v8::String;
52			using v8::Uint32;
53			using v8::Value;
54
55		5159	MaybeLocal<Object> TCPWrap::Instantiate(Environment* env,
56			AsyncWrap* parent,
57			TCPWrap::SocketType type) {
58		5159	EscapableHandleScope handle_scope(env->isolate());
59		5159	AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(parent);
60	✗✓	10318	CHECK_EQ(env->tcp_constructor_template().IsEmpty(), false);
61		5159	Local<Function> constructor = env->tcp_constructor_template()
62		5159	->GetFunction(env->context())
63		5159	.ToLocalChecked();
64	✗✓	5159	CHECK_EQ(constructor.IsEmpty(), false);
65		10318	Local<Value> type_value = Int32::New(env->isolate(), type);
66			return handle_scope.EscapeMaybe(
67		10318	constructor->NewInstance(env->context(), 1, &type_value));
68			}
69
70
71		5997	void TCPWrap::Initialize(Local<Object> target,
72			Local<Value> unused,
73			Local<Context> context,
74			void* priv) {
75		5997	Environment* env = Environment::GetCurrent(context);
76
77		5997	Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
78		11994	t->InstanceTemplate()->SetInternalFieldCount(StreamBase::kInternalFieldCount);
79
80			// Init properties
81		23988	t->InstanceTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "reading"),
82			Boolean::New(env->isolate(), false));
83		23988	t->InstanceTemplate()->Set(env->owner_symbol(), Null(env->isolate()));
84		23988	t->InstanceTemplate()->Set(env->onconnection_string(), Null(env->isolate()));
85
86		5997	t->Inherit(LibuvStreamWrap::GetConstructorTemplate(env));
87
88		5997	env->SetProtoMethod(t, "open", Open);
89		5997	env->SetProtoMethod(t, "bind", Bind);
90		5997	env->SetProtoMethod(t, "listen", Listen);
91		5997	env->SetProtoMethod(t, "connect", Connect);
92		5997	env->SetProtoMethod(t, "bind6", Bind6);
93		5997	env->SetProtoMethod(t, "connect6", Connect6);
94		5997	env->SetProtoMethod(t, "getsockname",
95			GetSockOrPeerName<TCPWrap, uv_tcp_getsockname>);
96		5997	env->SetProtoMethod(t, "getpeername",
97			GetSockOrPeerName<TCPWrap, uv_tcp_getpeername>);
98		5997	env->SetProtoMethod(t, "setNoDelay", SetNoDelay);
99		5997	env->SetProtoMethod(t, "setKeepAlive", SetKeepAlive);
100
101			#ifdef _WIN32
102			env->SetProtoMethod(t, "setSimultaneousAccepts", SetSimultaneousAccepts);
103			#endif
104
105		5997	env->SetConstructorFunction(target, "TCP", t);
106		5997	env->set_tcp_constructor_template(t);
107
108			// Create FunctionTemplate for TCPConnectWrap.
109			Local<FunctionTemplate> cwt =
110		5997	BaseObject::MakeLazilyInitializedJSTemplate(env);
111		5997	cwt->Inherit(AsyncWrap::GetConstructorTemplate(env));
112		5997	env->SetConstructorFunction(target, "TCPConnectWrap", cwt);
113
114			// Define constants
115		5997	Local<Object> constants = Object::New(env->isolate());
116		17991	NODE_DEFINE_CONSTANT(constants, SOCKET);
117		17991	NODE_DEFINE_CONSTANT(constants, SERVER);
118		17991	NODE_DEFINE_CONSTANT(constants, UV_TCP_IPV6ONLY);
119		5997	target->Set(context,
120			env->constants_string(),
121		11994	constants).Check();
122		5997	}
123
124		5184	void TCPWrap::RegisterExternalReferences(ExternalReferenceRegistry* registry) {
125		5184	registry->Register(New);
126		5184	registry->Register(Open);
127		5184	registry->Register(Bind);
128		5184	registry->Register(Listen);
129		5184	registry->Register(Connect);
130		5184	registry->Register(Bind6);
131		5184	registry->Register(Connect6);
132
133		5184	registry->Register(GetSockOrPeerName<TCPWrap, uv_tcp_getsockname>);
134		5184	registry->Register(GetSockOrPeerName<TCPWrap, uv_tcp_getpeername>);
135		5184	registry->Register(SetNoDelay);
136		5184	registry->Register(SetKeepAlive);
137			#ifdef _WIN32
138			registry->Register(SetSimultaneousAccepts);
139			#endif
140		5184	}
141
142		13008	void TCPWrap::New(const FunctionCallbackInfo<Value>& args) {
143			// This constructor should not be exposed to public javascript.
144			// Therefore we assert that we are not trying to call this as a
145			// normal function.
146	✗✓	13008	CHECK(args.IsConstructCall());
147	✗✓	13008	CHECK(args[0]->IsInt32());
148		13008	Environment* env = Environment::GetCurrent(args);
149
150		26016	int type_value = args[0].As<Int32>()->Value();
151		13008	TCPWrap::SocketType type = static_cast<TCPWrap::SocketType>(type_value);
152
153			ProviderType provider;
154	✓✓✗	13008	switch (type) {
155		11255	case SOCKET:
156		11255	provider = PROVIDER_TCPWRAP;
157		11255	break;
158		1753	case SERVER:
159		1753	provider = PROVIDER_TCPSERVERWRAP;
160		1753	break;
161			default:
162			UNREACHABLE();
163			}
164
165		13008	new TCPWrap(env, args.This(), provider);
166		13008	}
167
168
169		13008	TCPWrap::TCPWrap(Environment* env, Local<Object> object, ProviderType provider)
170		13008	: ConnectionWrap(env, object, provider) {
171		13008	int r = uv_tcp_init(env->event_loop(), &handle_);
172	✗✓	13008	CHECK_EQ(r, 0); // How do we proxy this error up to javascript?
173			// Suggestion: uv_tcp_init() returns void.
174		13008	}
175
176
177		5932	void TCPWrap::SetNoDelay(const FunctionCallbackInfo<Value>& args) {
178			TCPWrap* wrap;
179	✗✓	5932	ASSIGN_OR_RETURN_UNWRAP(&wrap,
180			args.Holder(),
181			args.GetReturnValue().Set(UV_EBADF));
182		5932	int enable = static_cast<int>(args[0]->IsTrue());
183		5932	int err = uv_tcp_nodelay(&wrap->handle_, enable);
184		11864	args.GetReturnValue().Set(err);
185			}
186
187
188		161	void TCPWrap::SetKeepAlive(const FunctionCallbackInfo<Value>& args) {
189			TCPWrap* wrap;
190	✗✓	161	ASSIGN_OR_RETURN_UNWRAP(&wrap,
191			args.Holder(),
192			args.GetReturnValue().Set(UV_EBADF));
193		161	Environment* env = wrap->env();
194			int enable;
195	✗✓	322	if (!args[0]->Int32Value(env->context()).To(&enable)) return;
196		322	unsigned int delay = static_cast<unsigned int>(args[1].As<Uint32>()->Value());
197		161	int err = uv_tcp_keepalive(&wrap->handle_, enable, delay);
198		322	args.GetReturnValue().Set(err);
199			}
200
201
202			#ifdef _WIN32
203			void TCPWrap::SetSimultaneousAccepts(const FunctionCallbackInfo<Value>& args) {
204			TCPWrap* wrap;
205			ASSIGN_OR_RETURN_UNWRAP(&wrap,
206			args.Holder(),
207			args.GetReturnValue().Set(UV_EBADF));
208			bool enable = args[0]->IsTrue();
209			int err = uv_tcp_simultaneous_accepts(&wrap->handle_, enable);
210			args.GetReturnValue().Set(err);
211			}
212			#endif
213
214
215		2	void TCPWrap::Open(const FunctionCallbackInfo<Value>& args) {
216			TCPWrap* wrap;
217	✗✓	2	ASSIGN_OR_RETURN_UNWRAP(&wrap,
218			args.Holder(),
219			args.GetReturnValue().Set(UV_EBADF));
220			int64_t val;
221	✗✓	4	if (!args[0]->IntegerValue(args.GetIsolate()->GetCurrentContext()).To(&val))
222			return;
223		2	int fd = static_cast<int>(val);
224		2	int err = uv_tcp_open(&wrap->handle_, fd);
225
226	✓✗	2	if (err == 0)
227		2	wrap->set_fd(fd);
228
229		4	args.GetReturnValue().Set(err);
230			}
231
232			template <typename T>
233		3552	void TCPWrap::Bind(
234			const FunctionCallbackInfo<Value>& args,
235			int family,
236			std::function<int(const char* ip_address, int port, T* addr)> uv_ip_addr) {
237			TCPWrap* wrap;
238	✗✓✗✓	1776	ASSIGN_OR_RETURN_UNWRAP(&wrap,
239			args.Holder(),
240			args.GetReturnValue().Set(UV_EBADF));
241		1776	Environment* env = wrap->env();
242		1776	node::Utf8Value ip_address(env->isolate(), args[0]);
243			int port;
244	✓✗✓✗	1776	unsigned int flags = 0;
245	✗✓✗✓	3552	if (!args[1]->Int32Value(env->context()).To(&port)) return;
246	✓✗✗✓	3422	if (family == AF_INET6 &&
247	✗✓✗✓ ✗✗✗✓	5068	!args[2]->Uint32Value(env->context()).To(&flags)) {
248			return;
249			}
250
251			T addr;
252		1776	int err = uv_ip_addr(*ip_address, port, &addr);
253
254	✓✓✓✗	1776	if (err == 0) {
255		1774	err = uv_tcp_bind(&wrap->handle_,
256			reinterpret_cast<const sockaddr*>(&addr),
257			flags);
258			}
259		3552	args.GetReturnValue().Set(err);
260			}
261
262		130	void TCPWrap::Bind(const FunctionCallbackInfo<Value>& args) {
263		130	Bind<sockaddr_in>(args, AF_INET, uv_ip4_addr);
264		130	}
265
266
267		1646	void TCPWrap::Bind6(const FunctionCallbackInfo<Value>& args) {
268		1646	Bind<sockaddr_in6>(args, AF_INET6, uv_ip6_addr);
269		1646	}
270
271
272		1759	void TCPWrap::Listen(const FunctionCallbackInfo<Value>& args) {
273			TCPWrap* wrap;
274	✗✓	1759	ASSIGN_OR_RETURN_UNWRAP(&wrap,
275			args.Holder(),
276			args.GetReturnValue().Set(UV_EBADF));
277		1759	Environment* env = wrap->env();
278			int backlog;
279	✗✓	3518	if (!args[0]->Int32Value(env->context()).To(&backlog)) return;
280		1759	int err = uv_listen(reinterpret_cast<uv_stream_t*>(&wrap->handle_),
281			backlog,
282			OnConnection);
283		3518	args.GetReturnValue().Set(err);
284			}
285
286
287	✓✗	686	void TCPWrap::Connect(const FunctionCallbackInfo<Value>& args) {
288	✗✓	686	CHECK(args[2]->IsUint32());
289			// explicit cast to fit to libuv's type expectation
290		1372	int port = static_cast<int>(args[2].As<Uint32>()->Value());
291		686	Connect<sockaddr_in>(args,
292		686	[port](const char* ip_address, sockaddr_in* addr) {
293		686	return uv_ip4_addr(ip_address, port, addr);
294			});
295		686	}
296
297
298		4910	void TCPWrap::Connect6(const FunctionCallbackInfo<Value>& args) {
299		4910	Environment* env = Environment::GetCurrent(args);
300	✗✓	4910	CHECK(args[2]->IsUint32());
301			int port;
302	✗✓	9820	if (!args[2]->Int32Value(env->context()).To(&port)) return;
303		4910	Connect<sockaddr_in6>(args,
304		4910	[port](const char* ip_address, sockaddr_in6* addr) {
305		4910	return uv_ip6_addr(ip_address, port, addr);
306			});
307			}
308
309			template <typename T>
310		11192	void TCPWrap::Connect(const FunctionCallbackInfo<Value>& args,
311			std::function<int(const char* ip_address, T* addr)> uv_ip_addr) {
312		11192	Environment* env = Environment::GetCurrent(args);
313
314			TCPWrap* wrap;
315	✗✓	11192	ASSIGN_OR_RETURN_UNWRAP(&wrap,
316			args.Holder(),
317			args.GetReturnValue().Set(UV_EBADF));
318
319	✗✓	11192	CHECK(args[0]->IsObject());
320	✗✓	22384	CHECK(args[1]->IsString());
321
322	✓✗	22384	Local<Object> req_wrap_obj = args[0].As<Object>();
323		11192	node::Utf8Value ip_address(env->isolate(), args[1]);
324
325			T addr;
326		11192	int err = uv_ip_addr(*ip_address, &addr);
327
328	✓✗	11192	if (err == 0) {
329		22384	AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(wrap);
330		22384	ConnectWrap* req_wrap =
331		11192	new ConnectWrap(env, req_wrap_obj, AsyncWrap::PROVIDER_TCPCONNECTWRAP);
332		22384	err = req_wrap->Dispatch(uv_tcp_connect,
333		11192	&wrap->handle_,
334			reinterpret_cast<const sockaddr*>(&addr),
335			AfterConnect);
336	✗✓	11192	if (err)
337			delete req_wrap;
338			}
339
340		22384	args.GetReturnValue().Set(err);
341			}
342
343
344			// also used by udp_wrap.cc
345		4826	MaybeLocal<Object> AddressToJS(Environment* env,
346			const sockaddr* addr,
347			Local<Object> info) {
348		4826	EscapableHandleScope scope(env->isolate());
349			char ip[INET6_ADDRSTRLEN + UV_IF_NAMESIZE];
350			const sockaddr_in* a4;
351			const sockaddr_in6* a6;
352
353			int port;
354
355	✓✓	4826	if (info.IsEmpty())
356		369	info = Object::New(env->isolate());
357
358	✓✓✗	4826	switch (addr->sa_family) {
359		4194	case AF_INET6:
360		4194	a6 = reinterpret_cast<const sockaddr_in6*>(addr);
361		4194	uv_inet_ntop(AF_INET6, &a6->sin6_addr, ip, sizeof ip);
362			// Add an interface identifier to a link local address.
363	✓✓✓✗ ✓✓	4194	if (IN6_IS_ADDR_LINKLOCAL(&a6->sin6_addr) && a6->sin6_scope_id > 0) {
364		2	const size_t addrlen = strlen(ip);
365	✗✓	2	CHECK_LT(addrlen, sizeof(ip));
366		2	ip[addrlen] = '%';
367		2	size_t scopeidlen = sizeof(ip) - addrlen - 1;
368	✗✓	2	CHECK_GE(scopeidlen, UV_IF_NAMESIZE);
369		2	const int r = uv_if_indextoiid(a6->sin6_scope_id,
370		2	ip + addrlen + 1,
371			&scopeidlen);
372	✗✓	2	if (r) {
373			env->ThrowUVException(r, "uv_if_indextoiid");
374			return {};
375			}
376			}
377		4194	port = ntohs(a6->sin6_port);
378		4194	info->Set(env->context(),
379			env->address_string(),
380		16776	OneByteString(env->isolate(), ip)).Check();
381		4194	info->Set(env->context(),
382			env->family_string(),
383		16776	Integer::New(env->isolate(), 6)).Check();
384		4194	info->Set(env->context(),
385			env->port_string(),
386		12582	Integer::New(env->isolate(), port)).Check();
387		4194	break;
388
389		632	case AF_INET:
390		632	a4 = reinterpret_cast<const sockaddr_in*>(addr);
391		632	uv_inet_ntop(AF_INET, &a4->sin_addr, ip, sizeof ip);
392		632	port = ntohs(a4->sin_port);
393		632	info->Set(env->context(),
394			env->address_string(),
395		2528	OneByteString(env->isolate(), ip)).Check();
396		632	info->Set(env->context(),
397			env->family_string(),
398		2528	Integer::New(env->isolate(), 4)).Check();
399		632	info->Set(env->context(),
400			env->port_string(),
401		1896	Integer::New(env->isolate(), port)).Check();
402		632	break;
403
404			default:
405			info->Set(env->context(),
406			env->address_string(),
407			String::Empty(env->isolate())).Check();
408			}
409
410		4826	return scope.Escape(info);
411			}
412
413
414			} // namespace node
415
416		5252	NODE_MODULE_CONTEXT_AWARE_INTERNAL(tcp_wrap, node::TCPWrap::Initialize)
417		5184	NODE_MODULE_EXTERNAL_REFERENCE(tcp_wrap,
418			node::TCPWrap::RegisterExternalReferences)