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// 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 "connection_wrap.h"
#include "env-inl.h"
#include "handle_wrap.h"
#include "node_buffer.h"
#include "node_internals.h"
#include "connect_wrap.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::HandleScope;
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);
Local<String> tcpString = FIXED_ONE_BYTE_STRING(env->isolate(), "TCP");
t->SetClassName(tcpString);
t->InstanceTemplate()
->SetInternalFieldCount(StreamBase::kStreamBaseFieldCount);
// 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
target->Set(env->context(),
tcpString,
t->GetFunction(env->context()).ToLocalChecked()).Check();
env->set_tcp_constructor_template(t);
// Create FunctionTemplate for TCPConnectWrap.
Local<FunctionTemplate> cwt =
BaseObject::MakeLazilyInitializedJSTemplate(env);
cwt->Inherit(AsyncWrap::GetConstructorTemplate(env));
Local<String> wrapString =
FIXED_ONE_BYTE_STRING(env->isolate(), "TCPConnectWrap");
cwt->SetClassName(wrapString);
target->Set(env->context(),
wrapString,
cwt->GetFunction(env->context()).ToLocalChecked()).Check();
// 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::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 = 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());
int port = 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
Local<Object> AddressToJS(Environment* env,
const sockaddr* addr,
Local<Object> info) {
EscapableHandleScope scope(env->isolate());
char ip[INET6_ADDRSTRLEN];
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);
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_MODULE_CONTEXT_AWARE_INTERNAL(tcp_wrap, node::TCPWrap::Initialize)