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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 "env.h"
#include "env-inl.h"
#include "handle_wrap.h"
#include "node_buffer.h"
#include "node_wrap.h"
#include "req_wrap.h"
#include "stream_wrap.h"
#include "util.h"
#include "util-inl.h"
#include <stdlib.h>
namespace node {
using v8::Context;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::Handle;
using v8::HandleScope;
using v8::Integer;
using v8::Local;
using v8::Object;
using v8::PropertyAttribute;
using v8::String;
using v8::Undefined;
using v8::Value;
typedef class ReqWrap<uv_connect_t> ConnectWrap;
Local<Object> TCPWrap::Instantiate(Environment* env) {
HandleScope handle_scope(env->isolate());
assert(env->tcp_constructor_template().IsEmpty() == false);
Local<Function> constructor = env->tcp_constructor_template()->GetFunction();
assert(constructor.IsEmpty() == false);
Local<Object> instance = constructor->NewInstance();
assert(instance.IsEmpty() == false);
return handle_scope.Close(instance);
}
void TCPWrap::Initialize(Handle<Object> target,
Handle<Value> unused,
Handle<Context> context) {
Environment* env = Environment::GetCurrent(context);
Local<FunctionTemplate> t = FunctionTemplate::New(New);
t->SetClassName(FIXED_ONE_BYTE_STRING(node_isolate, "TCP"));
t->InstanceTemplate()->SetInternalFieldCount(1);
enum PropertyAttribute attributes =
static_cast<PropertyAttribute>(v8::ReadOnly | v8::DontDelete);
t->InstanceTemplate()->SetAccessor(FIXED_ONE_BYTE_STRING(node_isolate, "fd"),
StreamWrap::GetFD,
NULL,
Handle<Value>(),
v8::DEFAULT,
attributes);
NODE_SET_PROTOTYPE_METHOD(t, "close", HandleWrap::Close);
NODE_SET_PROTOTYPE_METHOD(t, "ref", HandleWrap::Ref);
NODE_SET_PROTOTYPE_METHOD(t, "unref", HandleWrap::Unref);
NODE_SET_PROTOTYPE_METHOD(t, "readStart", StreamWrap::ReadStart);
NODE_SET_PROTOTYPE_METHOD(t, "readStop", StreamWrap::ReadStop);
NODE_SET_PROTOTYPE_METHOD(t, "shutdown", StreamWrap::Shutdown);
NODE_SET_PROTOTYPE_METHOD(t, "writeBuffer", StreamWrap::WriteBuffer);
NODE_SET_PROTOTYPE_METHOD(t,
"writeAsciiString",
StreamWrap::WriteAsciiString);
NODE_SET_PROTOTYPE_METHOD(t, "writeUtf8String", StreamWrap::WriteUtf8String);
NODE_SET_PROTOTYPE_METHOD(t, "writeUcs2String", StreamWrap::WriteUcs2String);
NODE_SET_PROTOTYPE_METHOD(t, "writev", StreamWrap::Writev);
NODE_SET_PROTOTYPE_METHOD(t, "open", Open);
NODE_SET_PROTOTYPE_METHOD(t, "bind", Bind);
NODE_SET_PROTOTYPE_METHOD(t, "listen", Listen);
NODE_SET_PROTOTYPE_METHOD(t, "connect", Connect);
NODE_SET_PROTOTYPE_METHOD(t, "bind6", Bind6);
NODE_SET_PROTOTYPE_METHOD(t, "connect6", Connect6);
NODE_SET_PROTOTYPE_METHOD(t, "getsockname", GetSockName);
NODE_SET_PROTOTYPE_METHOD(t, "getpeername", GetPeerName);
NODE_SET_PROTOTYPE_METHOD(t, "setNoDelay", SetNoDelay);
NODE_SET_PROTOTYPE_METHOD(t, "setKeepAlive", SetKeepAlive);
#ifdef _WIN32
NODE_SET_PROTOTYPE_METHOD(t,
"setSimultaneousAccepts",
SetSimultaneousAccepts);
#endif
AsyncWrap::AddMethods<TCPWrap>(t);
target->Set(FIXED_ONE_BYTE_STRING(node_isolate, "TCP"), t->GetFunction());
env->set_tcp_constructor_template(t);
}
uv_tcp_t* TCPWrap::UVHandle() {
return &handle_;
}
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.
assert(args.IsConstructCall());
HandleScope handle_scope(args.GetIsolate());
Environment* env = Environment::GetCurrent(args.GetIsolate());
TCPWrap* wrap = new TCPWrap(env, args.This());
assert(wrap);
}
TCPWrap::TCPWrap(Environment* env, Handle<Object> object)
: StreamWrap(env, object, reinterpret_cast<uv_stream_t*>(&handle_)) {
int r = uv_tcp_init(env->event_loop(), &handle_);
assert(r == 0); // How do we proxy this error up to javascript?
// Suggestion: uv_tcp_init() returns void.
UpdateWriteQueueSize();
}
TCPWrap::~TCPWrap() {
assert(persistent().IsEmpty());
}
void TCPWrap::GetSockName(const FunctionCallbackInfo<Value>& args) {
HandleScope handle_scope(args.GetIsolate());
Environment* env = Environment::GetCurrent(args.GetIsolate());
struct sockaddr_storage address;
TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
assert(args[0]->IsObject());
Local<Object> out = args[0].As<Object>();
int addrlen = sizeof(address);
int err = uv_tcp_getsockname(&wrap->handle_,
reinterpret_cast<sockaddr*>(&address),
&addrlen);
if (err == 0) {
const sockaddr* addr = reinterpret_cast<const sockaddr*>(&address);
AddressToJS(env, addr, out);
}
args.GetReturnValue().Set(err);
}
void TCPWrap::GetPeerName(const FunctionCallbackInfo<Value>& args) {
HandleScope handle_scope(args.GetIsolate());
Environment* env = Environment::GetCurrent(args.GetIsolate());
struct sockaddr_storage address;
TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
assert(args[0]->IsObject());
Local<Object> out = args[0].As<Object>();
int addrlen = sizeof(address);
int err = uv_tcp_getpeername(&wrap->handle_,
reinterpret_cast<sockaddr*>(&address),
&addrlen);
if (err == 0) {
const sockaddr* addr = reinterpret_cast<const sockaddr*>(&address);
AddressToJS(env, addr, out);
}
args.GetReturnValue().Set(err);
}
void TCPWrap::SetNoDelay(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
int enable = static_cast<int>(args[0]->BooleanValue());
int err = uv_tcp_nodelay(&wrap->handle_, enable);
args.GetReturnValue().Set(err);
}
void TCPWrap::SetKeepAlive(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
int enable = args[0]->Int32Value();
unsigned int delay = args[1]->Uint32Value();
int err = uv_tcp_keepalive(&wrap->handle_, enable, delay);
args.GetReturnValue().Set(err);
}
#ifdef _WIN32
void TCPWrap::SetSimultaneousAccepts(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
bool enable = args[0]->BooleanValue();
int err = uv_tcp_simultaneous_accepts(&wrap->handle_, enable);
args.GetReturnValue().Set(err);
}
#endif
void TCPWrap::Open(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
int fd = args[0]->IntegerValue();
uv_tcp_open(&wrap->handle_, fd);
}
void TCPWrap::Bind(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
String::AsciiValue ip_address(args[0]);
int port = args[1]->Int32Value();
sockaddr_in addr;
int err = uv_ip4_addr(*ip_address, port, &addr);
if (err == 0)
err = uv_tcp_bind(&wrap->handle_, reinterpret_cast<const sockaddr*>(&addr));
args.GetReturnValue().Set(err);
}
void TCPWrap::Bind6(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
String::AsciiValue ip6_address(args[0]);
int port = args[1]->Int32Value();
sockaddr_in6 addr;
int err = uv_ip6_addr(*ip6_address, port, &addr);
if (err == 0)
err = uv_tcp_bind(&wrap->handle_, reinterpret_cast<const sockaddr*>(&addr));
args.GetReturnValue().Set(err);
}
void TCPWrap::Listen(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
int backlog = args[0]->Int32Value();
int err = uv_listen(reinterpret_cast<uv_stream_t*>(&wrap->handle_),
backlog,
OnConnection);
args.GetReturnValue().Set(err);
}
void TCPWrap::OnConnection(uv_stream_t* handle, int status) {
TCPWrap* tcp_wrap = static_cast<TCPWrap*>(handle->data);
assert(&tcp_wrap->handle_ == reinterpret_cast<uv_tcp_t*>(handle));
Environment* env = tcp_wrap->env();
HandleScope handle_scope(env->isolate());
Context::Scope context_scope(env->context());
// We should not be getting this callback if someone as already called
// uv_close() on the handle.
assert(tcp_wrap->persistent().IsEmpty() == false);
Local<Value> argv[2] = {
Integer::New(status, node_isolate),
Undefined()
};
if (status == 0) {
// Instantiate the client javascript object and handle.
Local<Object> client_obj = Instantiate(env);
// Unwrap the client javascript object.
TCPWrap* wrap = Unwrap<TCPWrap>(client_obj);
uv_stream_t* client_handle = reinterpret_cast<uv_stream_t*>(&wrap->handle_);
if (uv_accept(handle, client_handle))
return;
// Successful accept. Call the onconnection callback in JavaScript land.
argv[1] = client_obj;
}
tcp_wrap->MakeCallback(env->onconnection_string(), ARRAY_SIZE(argv), argv);
}
void TCPWrap::AfterConnect(uv_connect_t* req, int status) {
ConnectWrap* req_wrap = static_cast<ConnectWrap*>(req->data);
TCPWrap* wrap = static_cast<TCPWrap*>(req->handle->data);
assert(req_wrap->env() == wrap->env());
Environment* env = wrap->env();
HandleScope handle_scope(env->isolate());
Context::Scope context_scope(env->context());
// The wrap and request objects should still be there.
assert(req_wrap->persistent().IsEmpty() == false);
assert(wrap->persistent().IsEmpty() == false);
Local<Object> req_wrap_obj = req_wrap->object();
Local<Value> argv[5] = {
Integer::New(status, node_isolate),
wrap->object(),
req_wrap_obj,
v8::True(node_isolate),
v8::True(node_isolate)
};
req_wrap->MakeCallback(env->oncomplete_string(), ARRAY_SIZE(argv), argv);
delete req_wrap;
}
void TCPWrap::Connect(const FunctionCallbackInfo<Value>& args) {
HandleScope handle_scope(args.GetIsolate());
Environment* env = Environment::GetCurrent(args.GetIsolate());
TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
assert(args[0]->IsObject());
assert(args[1]->IsString());
assert(args[2]->Uint32Value());
Local<Object> req_wrap_obj = args[0].As<Object>();
String::AsciiValue ip_address(args[1]);
int port = args[2]->Uint32Value();
sockaddr_in addr;
int err = uv_ip4_addr(*ip_address, port, &addr);
if (err == 0) {
ConnectWrap* req_wrap = new ConnectWrap(env, req_wrap_obj);
err = uv_tcp_connect(&req_wrap->req_,
&wrap->handle_,
reinterpret_cast<const sockaddr*>(&addr),
AfterConnect);
req_wrap->Dispatched();
if (err)
delete req_wrap;
}
args.GetReturnValue().Set(err);
}
void TCPWrap::Connect6(const FunctionCallbackInfo<Value>& args) {
HandleScope handle_scope(args.GetIsolate());
Environment* env = Environment::GetCurrent(args.GetIsolate());
TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
assert(args[0]->IsObject());
assert(args[1]->IsString());
assert(args[2]->Uint32Value());
Local<Object> req_wrap_obj = args[0].As<Object>();
String::AsciiValue ip_address(args[1]);
int port = args[2]->Int32Value();
sockaddr_in6 addr;
int err = uv_ip6_addr(*ip_address, port, &addr);
if (err == 0) {
ConnectWrap* req_wrap = new ConnectWrap(env, req_wrap_obj);
err = uv_tcp_connect(&req_wrap->req_,
&wrap->handle_,
reinterpret_cast<const sockaddr*>(&addr),
AfterConnect);
req_wrap->Dispatched();
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) {
HandleScope scope(node_isolate);
char ip[INET6_ADDRSTRLEN];
const sockaddr_in *a4;
const sockaddr_in6 *a6;
int port;
if (info.IsEmpty())
info = Object::New();
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->address_string(), OneByteString(node_isolate, ip));
info->Set(env->family_string(), env->ipv6_string());
info->Set(env->port_string(), Integer::New(port, node_isolate));
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->address_string(), OneByteString(node_isolate, ip));
info->Set(env->family_string(), env->ipv4_string());
info->Set(env->port_string(), Integer::New(port, node_isolate));
break;
default:
info->Set(env->address_string(), String::Empty(node_isolate));
}
return scope.Close(info);
}
} // namespace node
NODE_MODULE_CONTEXT_AWARE(node_tcp_wrap, node::TCPWrap::Initialize)
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