summaryrefslogtreecommitdiffstats
path: root/dom/network/UDPSocketChild.cpp
blob: 98aeb4f6b0801dc97501cf220aa5b573f33f5a07 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "UDPSocketChild.h"

#include "UDPSocket.h"
#include "mozilla/Unused.h"
#include "mozilla/ipc/InputStreamUtils.h"
#include "mozilla/net/NeckoChild.h"
#include "mozilla/dom/PermissionMessageUtils.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/PBackgroundChild.h"
#include "mozilla/ipc/BackgroundUtils.h"
#include "mozilla/ipc/PBackgroundSharedTypes.h"
#include "nsIIPCBackgroundChildCreateCallback.h"

using mozilla::net::gNeckoChild;

namespace mozilla {
namespace dom {

NS_IMPL_ISUPPORTS(UDPSocketChildBase, nsIUDPSocketChild)

UDPSocketChildBase::UDPSocketChildBase()
: mIPCOpen(false)
{
}

UDPSocketChildBase::~UDPSocketChildBase()
{
}

void
UDPSocketChildBase::ReleaseIPDLReference()
{
  MOZ_ASSERT(mIPCOpen);
  mIPCOpen = false;
  mSocket = nullptr;
  this->Release();
}

void
UDPSocketChildBase::AddIPDLReference()
{
  MOZ_ASSERT(!mIPCOpen);
  mIPCOpen = true;
  this->AddRef();
}

NS_IMETHODIMP_(MozExternalRefCountType) UDPSocketChild::Release(void)
{
  nsrefcnt refcnt = UDPSocketChildBase::Release();
  if (refcnt == 1 && mIPCOpen) {
    PUDPSocketChild::SendRequestDelete();
    return 1;
  }
  return refcnt;
}

UDPSocketChild::UDPSocketChild()
:mBackgroundManager(nullptr)
,mLocalPort(0)
{
}

UDPSocketChild::~UDPSocketChild()
{
}

class UDPSocketBackgroundChildCallback final :
  public nsIIPCBackgroundChildCreateCallback
{
  bool* mDone;

public:
  explicit UDPSocketBackgroundChildCallback(bool* aDone)
  : mDone(aDone)
  {
    MOZ_ASSERT(!NS_IsMainThread());
    MOZ_ASSERT(mDone);
    MOZ_ASSERT(!*mDone);
  }

  NS_DECL_ISUPPORTS

private:
  ~UDPSocketBackgroundChildCallback()
  { }

  virtual void
  ActorCreated(PBackgroundChild* aActor) override
  {
    *mDone = true;
  }

  virtual void
  ActorFailed() override
  {
    *mDone = true;
  }
};

NS_IMPL_ISUPPORTS(UDPSocketBackgroundChildCallback, nsIIPCBackgroundChildCreateCallback)

nsresult
UDPSocketChild::CreatePBackgroundSpinUntilDone()
{
  using mozilla::ipc::BackgroundChild;

  // Spinning the event loop in MainThread would be dangerous
  MOZ_ASSERT(!NS_IsMainThread());
  MOZ_ASSERT(!BackgroundChild::GetForCurrentThread());

  bool done = false;
  nsCOMPtr<nsIIPCBackgroundChildCreateCallback> callback =
    new UDPSocketBackgroundChildCallback(&done);

  if (NS_WARN_IF(!BackgroundChild::GetOrCreateForCurrentThread(callback))) {
    return NS_ERROR_FAILURE;
  }

  nsIThread* thread = NS_GetCurrentThread();
  while (!done) {
    if (NS_WARN_IF(!NS_ProcessNextEvent(thread, true /* aMayWait */))) {
      return NS_ERROR_FAILURE;
    }
  }

  if (NS_WARN_IF(!BackgroundChild::GetForCurrentThread())) {
    return NS_ERROR_FAILURE;
  }

  return NS_OK;
}

// nsIUDPSocketChild Methods

NS_IMETHODIMP
UDPSocketChild::SetBackgroundSpinsEvents()
{
  using mozilla::ipc::BackgroundChild;

  PBackgroundChild* existingBackgroundChild =
    BackgroundChild::GetForCurrentThread();
  // If it's not spun up yet, block until it is, and retry
  if (!existingBackgroundChild) {
    nsresult rv = CreatePBackgroundSpinUntilDone();
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return rv;
    }
    existingBackgroundChild =
      BackgroundChild::GetForCurrentThread();
    MOZ_ASSERT(existingBackgroundChild);
  }
  // By now PBackground is guaranteed to be/have-been up
  mBackgroundManager = existingBackgroundChild;
  return NS_OK;
}

NS_IMETHODIMP
UDPSocketChild::Bind(nsIUDPSocketInternal* aSocket,
                     nsIPrincipal* aPrincipal,
                     const nsACString& aHost,
                     uint16_t aPort,
                     bool aAddressReuse,
                     bool aLoopback,
                     uint32_t recvBufferSize,
                     uint32_t sendBufferSize)
{
  UDPSOCKET_LOG(("%s: %s:%u", __FUNCTION__, PromiseFlatCString(aHost).get(), aPort));

  NS_ENSURE_ARG(aSocket);

  if (NS_IsMainThread()) {
    if (!gNeckoChild->SendPUDPSocketConstructor(
            this, IPC::Principal(aPrincipal), mFilterName)) {
      return NS_ERROR_FAILURE;
    }
  } else {
    if (!mBackgroundManager) {
      return NS_ERROR_NOT_AVAILABLE;
    }

    // If we want to support a passed-in principal here we'd need to
    // convert it to a PrincipalInfo
    MOZ_ASSERT(!aPrincipal);
    if (!mBackgroundManager->SendPUDPSocketConstructor(
            this, void_t(), mFilterName)) {
      return NS_ERROR_FAILURE;
    }
  }

  mSocket = aSocket;
  AddIPDLReference();

  SendBind(UDPAddressInfo(nsCString(aHost), aPort), aAddressReuse, aLoopback,
           recvBufferSize, sendBufferSize);
  return NS_OK;
}

NS_IMETHODIMP
UDPSocketChild::Connect(nsIUDPSocketInternal* aSocket, const nsACString & aHost, uint16_t aPort)
{
  UDPSOCKET_LOG(("%s: %s:%u", __FUNCTION__, PromiseFlatCString(aHost).get(), aPort));

  mSocket = aSocket;

  SendConnect(UDPAddressInfo(nsCString(aHost), aPort));

  return NS_OK;
}

NS_IMETHODIMP
UDPSocketChild::Close()
{
  SendClose();
  return NS_OK;
}

NS_IMETHODIMP
UDPSocketChild::Send(const nsACString& aHost,
                     uint16_t aPort,
                     const uint8_t* aData,
                     uint32_t aByteLength)
{
  NS_ENSURE_ARG(aData);

  UDPSOCKET_LOG(("%s: %s:%u - %u bytes", __FUNCTION__, PromiseFlatCString(aHost).get(), aPort, aByteLength));
  return SendDataInternal(UDPSocketAddr(UDPAddressInfo(nsCString(aHost), aPort)),
                          aData, aByteLength);
}

NS_IMETHODIMP
UDPSocketChild::SendWithAddr(nsINetAddr* aAddr,
                             const uint8_t* aData,
                             uint32_t aByteLength)
{
  NS_ENSURE_ARG(aAddr);
  NS_ENSURE_ARG(aData);

  NetAddr addr;
  aAddr->GetNetAddr(&addr);

  UDPSOCKET_LOG(("%s: %u bytes", __FUNCTION__, aByteLength));
  return SendDataInternal(UDPSocketAddr(addr), aData, aByteLength);
}

NS_IMETHODIMP
UDPSocketChild::SendWithAddress(const NetAddr* aAddr,
                                const uint8_t* aData,
                                uint32_t aByteLength)
{
  NS_ENSURE_ARG(aAddr);
  NS_ENSURE_ARG(aData);

  UDPSOCKET_LOG(("%s: %u bytes", __FUNCTION__, aByteLength));
  return SendDataInternal(UDPSocketAddr(*aAddr), aData, aByteLength);
}

nsresult
UDPSocketChild::SendDataInternal(const UDPSocketAddr& aAddr,
                                 const uint8_t* aData,
                                 const uint32_t aByteLength)
{
  NS_ENSURE_ARG(aData);

  FallibleTArray<uint8_t> fallibleArray;
  if (!fallibleArray.InsertElementsAt(0, aData, aByteLength, fallible)) {
    return NS_ERROR_OUT_OF_MEMORY;
  }

  InfallibleTArray<uint8_t> array;
  array.SwapElements(fallibleArray);

  SendOutgoingData(array, aAddr);

  return NS_OK;
}

NS_IMETHODIMP
UDPSocketChild::SendBinaryStream(const nsACString& aHost,
                                 uint16_t aPort,
                                 nsIInputStream* aStream)
{
  NS_ENSURE_ARG(aStream);

  OptionalInputStreamParams stream;
  nsTArray<mozilla::ipc::FileDescriptor> fds;
  SerializeInputStream(aStream, stream, fds);

  MOZ_ASSERT(fds.IsEmpty());

  UDPSOCKET_LOG(("%s: %s:%u", __FUNCTION__, PromiseFlatCString(aHost).get(), aPort));
  SendOutgoingData(UDPData(stream), UDPSocketAddr(UDPAddressInfo(nsCString(aHost), aPort)));

  return NS_OK;
}

NS_IMETHODIMP
UDPSocketChild::JoinMulticast(const nsACString& aMulticastAddress,
                              const nsACString& aInterface)
{
  SendJoinMulticast(nsCString(aMulticastAddress), nsCString(aInterface));
  return NS_OK;
}

NS_IMETHODIMP
UDPSocketChild::LeaveMulticast(const nsACString& aMulticastAddress,
                               const nsACString& aInterface)
{
  SendLeaveMulticast(nsCString(aMulticastAddress), nsCString(aInterface));
  return NS_OK;
}

NS_IMETHODIMP
UDPSocketChild::GetLocalPort(uint16_t* aLocalPort)
{
  NS_ENSURE_ARG_POINTER(aLocalPort);

  *aLocalPort = mLocalPort;
  return NS_OK;
}

NS_IMETHODIMP
UDPSocketChild::GetLocalAddress(nsACString& aLocalAddress)
{
  aLocalAddress = mLocalAddress;
  return NS_OK;
}

NS_IMETHODIMP
UDPSocketChild::SetFilterName(const nsACString& aFilterName)
{
  if (!mFilterName.IsEmpty()) {
    // filter name can only be set once.
    return NS_ERROR_FAILURE;
  }
  mFilterName = aFilterName;
  return NS_OK;
}

NS_IMETHODIMP
UDPSocketChild::GetFilterName(nsACString& aFilterName)
{
  aFilterName = mFilterName;
  return NS_OK;
}

// PUDPSocketChild Methods
bool
UDPSocketChild::RecvCallbackOpened(const UDPAddressInfo& aAddressInfo)
{
  mLocalAddress = aAddressInfo.addr();
  mLocalPort = aAddressInfo.port();

  UDPSOCKET_LOG(("%s: %s:%u", __FUNCTION__, mLocalAddress.get(), mLocalPort));
  nsresult rv = mSocket->CallListenerOpened();
  mozilla::Unused << NS_WARN_IF(NS_FAILED(rv));

  return true;
}

// PUDPSocketChild Methods
bool
UDPSocketChild::RecvCallbackConnected(const UDPAddressInfo& aAddressInfo)
{
  mLocalAddress = aAddressInfo.addr();
  mLocalPort = aAddressInfo.port();

  UDPSOCKET_LOG(("%s: %s:%u", __FUNCTION__, mLocalAddress.get(), mLocalPort));
  nsresult rv = mSocket->CallListenerConnected();
  mozilla::Unused << NS_WARN_IF(NS_FAILED(rv));

  return true;
}

bool
UDPSocketChild::RecvCallbackClosed()
{
  nsresult rv = mSocket->CallListenerClosed();
  mozilla::Unused << NS_WARN_IF(NS_FAILED(rv));

  return true;
}

bool
UDPSocketChild::RecvCallbackReceivedData(const UDPAddressInfo& aAddressInfo,
                                         InfallibleTArray<uint8_t>&& aData)
{
  UDPSOCKET_LOG(("%s: %s:%u length %u", __FUNCTION__,
                 aAddressInfo.addr().get(), aAddressInfo.port(), aData.Length()));
  nsresult rv = mSocket->CallListenerReceivedData(aAddressInfo.addr(), aAddressInfo.port(),
                                                  aData.Elements(), aData.Length());
  mozilla::Unused << NS_WARN_IF(NS_FAILED(rv));

  return true;
}

bool
UDPSocketChild::RecvCallbackError(const nsCString& aMessage,
                                  const nsCString& aFilename,
                                  const uint32_t& aLineNumber)
{
  UDPSOCKET_LOG(("%s: %s:%s:%u", __FUNCTION__, aMessage.get(), aFilename.get(), aLineNumber));
  nsresult rv = mSocket->CallListenerError(aMessage, aFilename, aLineNumber);
  mozilla::Unused << NS_WARN_IF(NS_FAILED(rv));

  return true;
}

} // namespace dom
} // namespace mozilla