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60818b9 @ry Add missing copyright headers
ry authored
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
cbd4033 @bnoordhuis dgram: integrate libuv UDP support
bnoordhuis authored
22 #include <node.h>
23 #include <node_buffer.h>
24
25 #include <req_wrap.h>
26 #include <handle_wrap.h>
27
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28 #include <stdlib.h>
29
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30 // Temporary hack: libuv should provide uv_inet_pton and uv_inet_ntop.
31 // Clean this up in tcp_wrap.cc too.
32 #if defined(__MINGW32__) || defined(_MSC_VER)
33 extern "C" {
34 # include <inet_net_pton.h>
35 # include <inet_ntop.h>
36 }
37 # define uv_inet_pton ares_inet_pton
38 # define uv_inet_ntop ares_inet_ntop
39
40 #else // __POSIX__
41 # include <arpa/inet.h>
42 # define uv_inet_pton inet_pton
43 # define uv_inet_ntop inet_ntop
44 #endif
45
46 using namespace v8;
47
48 namespace node {
49
50 #define UNWRAP \
51 assert(!args.Holder().IsEmpty()); \
52 assert(args.Holder()->InternalFieldCount() > 0); \
53 UDPWrap* wrap = \
54 static_cast<UDPWrap*>(args.Holder()->GetPointerFromInternalField(0)); \
55 if (!wrap) { \
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56 uv_err_t err; \
57 err.code = UV_EBADF; \
58 SetErrno(err); \
cbd4033 @bnoordhuis dgram: integrate libuv UDP support
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59 return scope.Close(Integer::New(-1)); \
60 }
61
62 // TODO share with tcp_wrap.cc
63 Persistent<String> address_symbol;
64 Persistent<String> port_symbol;
65 Persistent<String> buffer_sym;
66
67 void AddressToJS(Handle<Object> info,
68 const sockaddr* addr,
69 int addrlen);
70
71 typedef ReqWrap<uv_udp_send_t> SendWrap;
72
73 class UDPWrap: public HandleWrap {
74 public:
75 static void Initialize(Handle<Object> target);
76 static Handle<Value> New(const Arguments& args);
77 static Handle<Value> Bind(const Arguments& args);
78 static Handle<Value> Send(const Arguments& args);
79 static Handle<Value> Bind6(const Arguments& args);
80 static Handle<Value> Send6(const Arguments& args);
81 static Handle<Value> RecvStart(const Arguments& args);
82 static Handle<Value> RecvStop(const Arguments& args);
83 static Handle<Value> GetSockName(const Arguments& args);
84
85 private:
86 UDPWrap(Handle<Object> object);
87 virtual ~UDPWrap();
88
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89 static Handle<Value> DoBind(const Arguments& args, int family);
90 static Handle<Value> DoSend(const Arguments& args, int family);
91
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92 static uv_buf_t OnAlloc(uv_handle_t* handle, size_t suggested_size);
93 static void OnSend(uv_udp_send_t* req, int status);
94 static void OnRecv(uv_udp_t* handle,
95 ssize_t nread,
96 uv_buf_t buf,
97 struct sockaddr* addr,
98 unsigned flags);
99
100 uv_udp_t handle_;
101 };
102
103
104 UDPWrap::UDPWrap(Handle<Object> object): HandleWrap(object,
105 (uv_handle_t*)&handle_) {
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106 int r = uv_udp_init(uv_default_loop(), &handle_);
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107 assert(r == 0); // can't fail anyway
108 handle_.data = reinterpret_cast<void*>(this);
109 }
110
111
112 UDPWrap::~UDPWrap() {
113 }
114
115
116 void UDPWrap::Initialize(Handle<Object> target) {
117 HandleWrap::Initialize(target);
118
119 HandleScope scope;
120
121 buffer_sym = NODE_PSYMBOL("buffer");
122 port_symbol = NODE_PSYMBOL("port");
123 address_symbol = NODE_PSYMBOL("address");
124
125 Local<FunctionTemplate> t = FunctionTemplate::New(New);
126 t->InstanceTemplate()->SetInternalFieldCount(1);
127 t->SetClassName(String::NewSymbol("UDP"));
128
129 NODE_SET_PROTOTYPE_METHOD(t, "bind", Bind);
130 NODE_SET_PROTOTYPE_METHOD(t, "send", Send);
131 NODE_SET_PROTOTYPE_METHOD(t, "bind6", Bind6);
132 NODE_SET_PROTOTYPE_METHOD(t, "send6", Send6);
133 NODE_SET_PROTOTYPE_METHOD(t, "close", Close);
134 NODE_SET_PROTOTYPE_METHOD(t, "recvStart", RecvStart);
135 NODE_SET_PROTOTYPE_METHOD(t, "recvStop", RecvStop);
136 NODE_SET_PROTOTYPE_METHOD(t, "getsockname", GetSockName);
137
138 target->Set(String::NewSymbol("UDP"),
139 Persistent<FunctionTemplate>::New(t)->GetFunction());
140 }
141
142
143 Handle<Value> UDPWrap::New(const Arguments& args) {
144 HandleScope scope;
145
146 assert(args.IsConstructCall());
147 new UDPWrap(args.This());
148
149 return scope.Close(args.This());
150 }
151
152
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153 Handle<Value> UDPWrap::DoBind(const Arguments& args, int family) {
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154 HandleScope scope;
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155 int r;
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156
157 UNWRAP
158
159 // bind(ip, port, flags)
160 assert(args.Length() == 3);
161
162 String::Utf8Value address(args[0]->ToString());
163 const int port = args[1]->Uint32Value();
164 const int flags = args[2]->Uint32Value();
165
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166 switch (family) {
167 case AF_INET:
168 r = uv_udp_bind(&wrap->handle_, uv_ip4_addr(*address, port), flags);
169 break;
170 case AF_INET6:
171 r = uv_udp_bind6(&wrap->handle_, uv_ip6_addr(*address, port), flags);
172 break;
173 default:
174 assert(0 && "unexpected address family");
175 abort();
176 }
177
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178 if (r)
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179 SetErrno(uv_last_error(uv_default_loop()));
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180
181 return scope.Close(Integer::New(r));
182 }
183
184
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185 Handle<Value> UDPWrap::Bind(const Arguments& args) {
186 return DoBind(args, AF_INET);
187 }
188
189
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190 Handle<Value> UDPWrap::Bind6(const Arguments& args) {
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191 return DoBind(args, AF_INET6);
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192 }
193
194
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195 Handle<Value> UDPWrap::DoSend(const Arguments& args, int family) {
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196 HandleScope scope;
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197 int r;
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198
199 // send(buffer, offset, length, port, address)
200 assert(args.Length() == 5);
201
202 UNWRAP
203
204 assert(Buffer::HasInstance(args[0]));
205 Local<Object> buffer_obj = args[0]->ToObject();
206
207 size_t offset = args[1]->Uint32Value();
208 size_t length = args[2]->Uint32Value();
209
210 SendWrap* req_wrap = new SendWrap();
211 req_wrap->object_->SetHiddenValue(buffer_sym, buffer_obj);
212
213 uv_buf_t buf = uv_buf_init(Buffer::Data(buffer_obj) + offset,
214 length);
215
216 const unsigned short port = args[3]->Uint32Value();
217 String::Utf8Value address(args[4]->ToString());
218
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219 switch (family) {
220 case AF_INET:
221 r = uv_udp_send(&req_wrap->req_, &wrap->handle_, &buf, 1,
222 uv_ip4_addr(*address, port), OnSend);
223 break;
224 case AF_INET6:
225 r = uv_udp_send6(&req_wrap->req_, &wrap->handle_, &buf, 1,
226 uv_ip6_addr(*address, port), OnSend);
227 break;
228 default:
229 assert(0 && "unexpected address family");
230 abort();
231 }
232
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233 req_wrap->Dispatched();
234
235 if (r) {
6cc4292 @ry Display sys_errno when UV_UNKNOWN is returned
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236 SetErrno(uv_last_error(uv_default_loop()));
cbd4033 @bnoordhuis dgram: integrate libuv UDP support
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237 delete req_wrap;
238 return Null();
239 }
240 else {
241 return scope.Close(req_wrap->object_);
242 }
243 }
244
245
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246 Handle<Value> UDPWrap::Send(const Arguments& args) {
247 return DoSend(args, AF_INET);
248 }
249
250
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251 Handle<Value> UDPWrap::Send6(const Arguments& args) {
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252 return DoSend(args, AF_INET6);
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253 }
254
255
256 Handle<Value> UDPWrap::RecvStart(const Arguments& args) {
257 HandleScope scope;
258
259 UNWRAP
260
261 // UV_EALREADY means that the socket is already bound but that's okay
262 int r = uv_udp_recv_start(&wrap->handle_, OnAlloc, OnRecv);
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263 if (r && uv_last_error(uv_default_loop()).code != UV_EALREADY) {
6cc4292 @ry Display sys_errno when UV_UNKNOWN is returned
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264 SetErrno(uv_last_error(uv_default_loop()));
cbd4033 @bnoordhuis dgram: integrate libuv UDP support
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265 return False();
266 }
267
268 return True();
269 }
270
271
272 Handle<Value> UDPWrap::RecvStop(const Arguments& args) {
273 HandleScope scope;
274
275 UNWRAP
276
277 int r = uv_udp_recv_stop(&wrap->handle_);
278
279 return scope.Close(Integer::New(r));
280 }
281
282
283 Handle<Value> UDPWrap::GetSockName(const Arguments& args) {
284 HandleScope scope;
285 struct sockaddr_storage address;
286
287 UNWRAP
288
289 int addrlen = sizeof(address);
c82ab45 @piscisaureus uv_getsockname got renamed
piscisaureus authored
290 int r = uv_udp_getsockname(&wrap->handle_,
291 reinterpret_cast<sockaddr*>(&address),
292 &addrlen);
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293
294 if (r == 0) {
295 Local<Object> sockname = Object::New();
296 AddressToJS(sockname, reinterpret_cast<sockaddr*>(&address), addrlen);
297 return scope.Close(sockname);
298 }
299 else {
6cc4292 @ry Display sys_errno when UV_UNKNOWN is returned
ry authored
300 SetErrno(uv_last_error(uv_default_loop()));
cbd4033 @bnoordhuis dgram: integrate libuv UDP support
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301 return Null();
302 }
303 }
304
305
306 // TODO share with StreamWrap::AfterWrite() in stream_wrap.cc
307 void UDPWrap::OnSend(uv_udp_send_t* req, int status) {
308 HandleScope scope;
309
310 assert(req != NULL);
311
312 SendWrap* req_wrap = reinterpret_cast<SendWrap*>(req->data);
313 UDPWrap* wrap = reinterpret_cast<UDPWrap*>(req->handle->data);
314
315 assert(req_wrap->object_.IsEmpty() == false);
316 assert(wrap->object_.IsEmpty() == false);
317
318 if (status) {
6cc4292 @ry Display sys_errno when UV_UNKNOWN is returned
ry authored
319 SetErrno(uv_last_error(uv_default_loop()));
cbd4033 @bnoordhuis dgram: integrate libuv UDP support
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320 }
321
322 Local<Value> argv[4] = {
323 Integer::New(status),
324 Local<Value>::New(wrap->object_),
325 Local<Value>::New(req_wrap->object_),
326 req_wrap->object_->GetHiddenValue(buffer_sym),
327 };
328
329 MakeCallback(req_wrap->object_, "oncomplete", 4, argv);
330 delete req_wrap;
331 }
332
333
334 uv_buf_t UDPWrap::OnAlloc(uv_handle_t* handle, size_t suggested_size) {
335 // FIXME switch to slab allocation, share with stream_wrap.cc
336 return uv_buf_init(new char[suggested_size], suggested_size);
337 }
338
339
340 static void ReleaseMemory(char* data, void* arg) {
341 delete[] data; // data == buf.base
342 }
343
344
345 void UDPWrap::OnRecv(uv_udp_t* handle,
346 ssize_t nread,
347 uv_buf_t buf,
348 struct sockaddr* addr,
349 unsigned flags) {
350 if (nread == 0) {
351 ReleaseMemory(buf.base, NULL);
352 return;
353 }
354
355 HandleScope scope;
356
357 UDPWrap* wrap = reinterpret_cast<UDPWrap*>(handle->data);
358
359 Handle<Value> argv[4] = {
360 wrap->object_,
361 Integer::New(nread),
362 Null(),
363 Null()
364 };
365
366 if (nread == -1) {
6cc4292 @ry Display sys_errno when UV_UNKNOWN is returned
ry authored
367 SetErrno(uv_last_error(uv_default_loop()));
cbd4033 @bnoordhuis dgram: integrate libuv UDP support
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368 }
369 else {
370 Local<Object> rinfo = Object::New();
371 AddressToJS(rinfo, addr, sizeof *addr);
372 argv[2] = Buffer::New(buf.base, nread, ReleaseMemory, NULL)->handle_;
373 argv[3] = rinfo;
374 }
375
376 MakeCallback(wrap->object_, "onmessage", ARRAY_SIZE(argv), argv);
377 }
378
379
380 void AddressToJS(Handle<Object> info,
381 const sockaddr* addr,
382 int addrlen) {
383 char ip[INET6_ADDRSTRLEN];
384 const sockaddr_in *a4;
385 const sockaddr_in6 *a6;
386 int port;
387
388 assert(addr != NULL);
389
390 if (addrlen == 0) {
391 info->Set(address_symbol, String::Empty());
392 return;
393 }
394
395 switch (addr->sa_family) {
396 case AF_INET6:
397 a6 = reinterpret_cast<const sockaddr_in6*>(addr);
06f750c @ry fix windows build
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398 uv_inet_ntop(AF_INET6, &a6->sin6_addr, ip, sizeof ip);
cbd4033 @bnoordhuis dgram: integrate libuv UDP support
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399 port = ntohs(a6->sin6_port);
400 info->Set(address_symbol, String::New(ip));
401 info->Set(port_symbol, Integer::New(port));
402 break;
403
404 case AF_INET:
405 a4 = reinterpret_cast<const sockaddr_in*>(addr);
06f750c @ry fix windows build
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406 uv_inet_ntop(AF_INET, &a4->sin_addr, ip, sizeof ip);
cbd4033 @bnoordhuis dgram: integrate libuv UDP support
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407 port = ntohs(a4->sin_port);
408 info->Set(address_symbol, String::New(ip));
409 info->Set(port_symbol, Integer::New(port));
410 break;
411
412 default:
413 info->Set(address_symbol, String::Empty());
414 }
415 }
416
417
418 } // namespace node
419
cdcb111 @bnoordhuis Remove stray NODE_MODULE() semi-colons.
bnoordhuis authored
420 NODE_MODULE(node_udp_wrap, node::UDPWrap::Initialize)
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