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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 <node.h>
#include <node_buffer.h>
#include <req_wrap.h>
#include <handle_wrap.h>
#include <stream_wrap.h>
#include <tcp_wrap.h>
#include <stdlib.h>
// Temporary hack: libuv should provide uv_inet_pton and uv_inet_ntop.
#if defined(__MINGW32__) || defined(_MSC_VER)
extern "C" {
# include <inet_net_pton.h>
# include <inet_ntop.h>
}
# define uv_inet_pton ares_inet_pton
# define uv_inet_ntop ares_inet_ntop
#else // __POSIX__
# include <arpa/inet.h>
# define uv_inet_pton inet_pton
# define uv_inet_ntop inet_ntop
#endif
#define UNWRAP \
assert(!args.Holder().IsEmpty()); \
assert(args.Holder()->InternalFieldCount() > 0); \
TCPWrap* wrap = \
static_cast<TCPWrap*>(args.Holder()->GetPointerFromInternalField(0)); \
if (!wrap) { \
uv_err_t err; \
err.code = UV_EBADF; \
SetErrno(err); \
return scope.Close(Integer::New(-1)); \
}
namespace node {
using v8::Object;
using v8::Handle;
using v8::Local;
using v8::Persistent;
using v8::Value;
using v8::HandleScope;
using v8::FunctionTemplate;
using v8::String;
using v8::Function;
using v8::TryCatch;
using v8::Context;
using v8::Arguments;
using v8::Integer;
using v8::Undefined;
static Persistent<Function> tcpConstructor;
static Persistent<String> family_symbol;
static Persistent<String> address_symbol;
static Persistent<String> port_symbol;
typedef class ReqWrap<uv_connect_t> ConnectWrap;
Local<Object> TCPWrap::Instantiate() {
// If this assert fire then process.binding('tcp_wrap') hasn't been
// called yet.
assert(tcpConstructor.IsEmpty() == false);
HandleScope scope;
Local<Object> obj = tcpConstructor->NewInstance();
return scope.Close(obj);
}
void TCPWrap::Initialize(Handle<Object> target) {
HandleWrap::Initialize(target);
StreamWrap::Initialize(target);
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(New);
t->SetClassName(String::NewSymbol("TCP"));
t->InstanceTemplate()->SetInternalFieldCount(1);
NODE_SET_PROTOTYPE_METHOD(t, "close", HandleWrap::Close);
NODE_SET_PROTOTYPE_METHOD(t, "readStart", StreamWrap::ReadStart);
NODE_SET_PROTOTYPE_METHOD(t, "readStop", StreamWrap::ReadStop);
NODE_SET_PROTOTYPE_METHOD(t, "write", StreamWrap::Write);
NODE_SET_PROTOTYPE_METHOD(t, "shutdown", StreamWrap::Shutdown);
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
tcpConstructor = Persistent<Function>::New(t->GetFunction());
family_symbol = NODE_PSYMBOL("family");
address_symbol = NODE_PSYMBOL("address");
port_symbol = NODE_PSYMBOL("port");
target->Set(String::NewSymbol("TCP"), tcpConstructor);
}
Handle<Value> TCPWrap::New(const Arguments& 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 scope;
TCPWrap* wrap = new TCPWrap(args.This());
assert(wrap);
return scope.Close(args.This());
}
TCPWrap::TCPWrap(Handle<Object> object)
: StreamWrap(object, (uv_stream_t*) &handle_) {
int r = uv_tcp_init(uv_default_loop(), &handle_);
assert(r == 0); // How do we proxy this error up to javascript?
// Suggestion: uv_tcp_init() returns void.
UpdateWriteQueueSize();
}
TCPWrap::~TCPWrap() {
assert(object_.IsEmpty());
}
Handle<Value> TCPWrap::GetSockName(const Arguments& args) {
HandleScope scope;
struct sockaddr_storage address;
int family;
int port;
char ip[INET6_ADDRSTRLEN];
UNWRAP
int addrlen = sizeof(address);
int r = uv_tcp_getsockname(&wrap->handle_,
reinterpret_cast<sockaddr*>(&address),
&addrlen);
Local<Object> sockname = Object::New();
if (r != 0) {
SetErrno(uv_last_error(uv_default_loop()));
} else {
family = address.ss_family;
if (family == AF_INET) {
struct sockaddr_in* addrin = (struct sockaddr_in*)&address;
uv_inet_ntop(AF_INET, &(addrin->sin_addr), ip, INET6_ADDRSTRLEN);
port = ntohs(addrin->sin_port);
} else if (family == AF_INET6) {
struct sockaddr_in6* addrin6 = (struct sockaddr_in6*)&address;
uv_inet_ntop(AF_INET6, &(addrin6->sin6_addr), ip, INET6_ADDRSTRLEN);
port = ntohs(addrin6->sin6_port);
} else {
assert(0 && "bad address family");
abort();
}
sockname->Set(port_symbol, Integer::New(port));
sockname->Set(family_symbol, Integer::New(family));
sockname->Set(address_symbol, String::New(ip));
}
return scope.Close(sockname);
}
Handle<Value> TCPWrap::GetPeerName(const Arguments& args) {
HandleScope scope;
struct sockaddr_storage address;
int family;
int port;
char ip[INET6_ADDRSTRLEN];
UNWRAP
int addrlen = sizeof(address);
int r = uv_tcp_getpeername(&wrap->handle_,
reinterpret_cast<sockaddr*>(&address),
&addrlen);
Local<Object> sockname = Object::New();
if (r != 0) {
SetErrno(uv_last_error(uv_default_loop()));
} else {
family = address.ss_family;
if (family == AF_INET) {
struct sockaddr_in* addrin = (struct sockaddr_in*)&address;
uv_inet_ntop(AF_INET, &(addrin->sin_addr), ip, INET6_ADDRSTRLEN);
port = ntohs(addrin->sin_port);
} else if (family == AF_INET6) {
struct sockaddr_in6* addrin6 = (struct sockaddr_in6*)&address;
uv_inet_ntop(AF_INET6, &(addrin6->sin6_addr), ip, INET6_ADDRSTRLEN);
port = ntohs(addrin6->sin6_port);
} else {
assert(0 && "bad address family");
abort();
}
sockname->Set(port_symbol, Integer::New(port));
sockname->Set(family_symbol, Integer::New(family));
sockname->Set(address_symbol, String::New(ip));
}
return scope.Close(sockname);
}
Handle<Value> TCPWrap::SetNoDelay(const Arguments& args) {
HandleScope scope;
UNWRAP
int r = uv_tcp_nodelay(&wrap->handle_, 1);
if (r)
SetErrno(uv_last_error(uv_default_loop()));
return Undefined();
}
Handle<Value> TCPWrap::SetKeepAlive(const Arguments& args) {
HandleScope scope;
UNWRAP
int enable = args[0]->Int32Value();
unsigned int delay = args[1]->Uint32Value();
int r = uv_tcp_keepalive(&wrap->handle_, enable, delay);
if (r)
SetErrno(uv_last_error(uv_default_loop()));
return Undefined();
}
#ifdef _WIN32
Handle<Value> TCPWrap::SetSimultaneousAccepts(const Arguments& args) {
HandleScope scope;
UNWRAP
bool enable = args[0]->BooleanValue();
int r = uv_tcp_simultaneous_accepts(&wrap->handle_, enable ? 1 : 0);
if (r)
SetErrno(uv_last_error(uv_default_loop()));
return Undefined();
}
#endif
Handle<Value> TCPWrap::Bind(const Arguments& args) {
HandleScope scope;
UNWRAP
String::AsciiValue ip_address(args[0]->ToString());
int port = args[1]->Int32Value();
struct sockaddr_in address = uv_ip4_addr(*ip_address, port);
int r = uv_tcp_bind(&wrap->handle_, address);
// Error starting the tcp.
if (r) SetErrno(uv_last_error(uv_default_loop()));
return scope.Close(Integer::New(r));
}
Handle<Value> TCPWrap::Bind6(const Arguments& args) {
HandleScope scope;
UNWRAP
String::AsciiValue ip6_address(args[0]->ToString());
int port = args[1]->Int32Value();
struct sockaddr_in6 address = uv_ip6_addr(*ip6_address, port);
int r = uv_tcp_bind6(&wrap->handle_, address);
// Error starting the tcp.
if (r) SetErrno(uv_last_error(uv_default_loop()));
return scope.Close(Integer::New(r));
}
Handle<Value> TCPWrap::Listen(const Arguments& args) {
HandleScope scope;
UNWRAP
int backlog = args[0]->Int32Value();
int r = uv_listen((uv_stream_t*)&wrap->handle_, backlog, OnConnection);
// Error starting the tcp.
if (r) SetErrno(uv_last_error(uv_default_loop()));
return scope.Close(Integer::New(r));
}
void TCPWrap::OnConnection(uv_stream_t* handle, int status) {
HandleScope scope;
TCPWrap* wrap = static_cast<TCPWrap*>(handle->data);
assert(&wrap->handle_ == (uv_tcp_t*)handle);
// We should not be getting this callback if someone as already called
// uv_close() on the handle.
assert(wrap->object_.IsEmpty() == false);
Handle<Value> argv[1];
if (status == 0) {
// Instantiate the client javascript object and handle.
Local<Object> client_obj = Instantiate();
// Unwrap the client javascript object.
assert(client_obj->InternalFieldCount() > 0);
TCPWrap* client_wrap =
static_cast<TCPWrap*>(client_obj->GetPointerFromInternalField(0));
if (uv_accept(handle, (uv_stream_t*)&client_wrap->handle_)) return;
// Successful accept. Call the onconnection callback in JavaScript land.
argv[0] = client_obj;
} else {
SetErrno(uv_last_error(uv_default_loop()));
argv[0] = v8::Null();
}
MakeCallback(wrap->object_, "onconnection", 1, argv);
}
void TCPWrap::AfterConnect(uv_connect_t* req, int status) {
ConnectWrap* req_wrap = (ConnectWrap*) req->data;
TCPWrap* wrap = (TCPWrap*) req->handle->data;
HandleScope scope;
// The wrap and request objects should still be there.
assert(req_wrap->object_.IsEmpty() == false);
assert(wrap->object_.IsEmpty() == false);
if (status) {
SetErrno(uv_last_error(uv_default_loop()));
}
Local<Value> argv[5] = {
Integer::New(status),
Local<Value>::New(wrap->object_),
Local<Value>::New(req_wrap->object_),
Local<Value>::New(v8::True()),
Local<Value>::New(v8::True())
};
MakeCallback(req_wrap->object_, "oncomplete", 5, argv);
delete req_wrap;
}
Handle<Value> TCPWrap::Connect(const Arguments& args) {
HandleScope scope;
UNWRAP
String::AsciiValue ip_address(args[0]->ToString());
int port = args[1]->Int32Value();
struct sockaddr_in address = uv_ip4_addr(*ip_address, port);
// I hate when people program C++ like it was C, and yet I do it too.
// I'm too lazy to come up with the perfect class hierarchy here. Let's
// just do some type munging.
ConnectWrap* req_wrap = new ConnectWrap();
int r = uv_tcp_connect(&req_wrap->req_, &wrap->handle_, address,
AfterConnect);
req_wrap->Dispatched();
if (r) {
SetErrno(uv_last_error(uv_default_loop()));
delete req_wrap;
return scope.Close(v8::Null());
} else {
return scope.Close(req_wrap->object_);
}
}
Handle<Value> TCPWrap::Connect6(const Arguments& args) {
HandleScope scope;
UNWRAP
String::AsciiValue ip_address(args[0]->ToString());
int port = args[1]->Int32Value();
struct sockaddr_in6 address = uv_ip6_addr(*ip_address, port);
ConnectWrap* req_wrap = new ConnectWrap();
int r = uv_tcp_connect6(&req_wrap->req_, &wrap->handle_, address,
AfterConnect);
req_wrap->Dispatched();
if (r) {
SetErrno(uv_last_error(uv_default_loop()));
delete req_wrap;
return scope.Close(v8::Null());
} else {
return scope.Close(req_wrap->object_);
}
}
} // namespace node
NODE_MODULE(node_tcp_wrap, node::TCPWrap::Initialize)
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