summaryrefslogtreecommitdiff
path: root/dom/base/nsInProcessTabChildGlobal.cpp
blob: 8d94e4ead4d035264d6873b3ff3e2a48253c16cb (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
/* -*- 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 "nsInProcessTabChildGlobal.h"
#include "nsContentUtils.h"
#include "nsIScriptSecurityManager.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsComponentManagerUtils.h"
#include "nsFrameLoader.h"
#include "xpcpublic.h"
#include "nsIMozBrowserFrame.h"
#include "nsDOMClassInfoID.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/dom/SameProcessMessageQueue.h"
#include "mozilla/dom/ScriptLoader.h"

using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::dom::ipc;

bool
nsInProcessTabChildGlobal::DoSendBlockingMessage(JSContext* aCx,
                                                 const nsAString& aMessage,
                                                 StructuredCloneData& aData,
                                                 JS::Handle<JSObject *> aCpows,
                                                 nsIPrincipal* aPrincipal,
                                                 nsTArray<StructuredCloneData>* aRetVal,
                                                 bool aIsSync)
{
  SameProcessMessageQueue* queue = SameProcessMessageQueue::Get();
  queue->Flush();

  if (mChromeMessageManager) {
    SameProcessCpowHolder cpows(JS::RootingContext::get(aCx), aCpows);
    RefPtr<nsFrameMessageManager> mm = mChromeMessageManager;
    nsCOMPtr<nsIFrameLoader> fl = GetFrameLoader();
    mm->ReceiveMessage(mOwner, fl, aMessage, true, &aData, &cpows, aPrincipal,
                       aRetVal);
  }
  return true;
}

class nsAsyncMessageToParent : public nsSameProcessAsyncMessageBase,
                               public SameProcessMessageQueue::Runnable
{
public:
  nsAsyncMessageToParent(JS::RootingContext* aRootingCx,
                         JS::Handle<JSObject*> aCpows,
                         nsInProcessTabChildGlobal* aTabChild)
    : nsSameProcessAsyncMessageBase(aRootingCx, aCpows)
    , mTabChild(aTabChild)
  { }

  virtual nsresult HandleMessage() override
  {
    nsCOMPtr<nsIFrameLoader> fl = mTabChild->GetFrameLoader();
    ReceiveMessage(mTabChild->mOwner, fl, mTabChild->mChromeMessageManager);
    return NS_OK;
  }
  RefPtr<nsInProcessTabChildGlobal> mTabChild;
};

nsresult
nsInProcessTabChildGlobal::DoSendAsyncMessage(JSContext* aCx,
                                              const nsAString& aMessage,
                                              StructuredCloneData& aData,
                                              JS::Handle<JSObject *> aCpows,
                                              nsIPrincipal* aPrincipal)
{
  SameProcessMessageQueue* queue = SameProcessMessageQueue::Get();
  JS::RootingContext* rcx = JS::RootingContext::get(aCx);
  RefPtr<nsAsyncMessageToParent> ev =
    new nsAsyncMessageToParent(rcx, aCpows, this);

  nsresult rv = ev->Init(aMessage, aData, aPrincipal);
  if (NS_FAILED(rv)) {
    return rv;
  }

  queue->Push(ev);
  return NS_OK;
}

nsInProcessTabChildGlobal::nsInProcessTabChildGlobal(nsIDocShell* aShell,
                                                     nsIContent* aOwner,
                                                     nsFrameMessageManager* aChrome)
: mDocShell(aShell), mInitialized(false), mLoadingScript(false),
  mPreventEventsEscaping(false),
  mOwner(aOwner), mChromeMessageManager(aChrome)
{
  SetIsNotDOMBinding();
  mozilla::HoldJSObjects(this);

  // If owner corresponds to an <iframe mozbrowser> or <iframe mozapp>, we'll
  // GetEventTargetParent implementation.
  nsCOMPtr<nsIMozBrowserFrame> browserFrame = do_QueryInterface(mOwner);
  if (browserFrame) {
    mIsBrowserOrAppFrame = browserFrame->GetReallyIsBrowserOrApp();
  }
  else {
    mIsBrowserOrAppFrame = false;
  }
}

nsInProcessTabChildGlobal::~nsInProcessTabChildGlobal()
{
  mAnonymousGlobalScopes.Clear();
  mozilla::DropJSObjects(this);
}

// This method isn't automatically forwarded safely because it's notxpcom, so
// the IDL binding doesn't know what value to return.
NS_IMETHODIMP_(bool)
nsInProcessTabChildGlobal::MarkForCC()
{
  MarkScopesForCC();
  return mMessageManager ? mMessageManager->MarkForCC() : false;
}

nsresult
nsInProcessTabChildGlobal::Init()
{
#ifdef DEBUG
  nsresult rv =
#endif
  InitTabChildGlobal();
  NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
                       "Couldn't initialize nsInProcessTabChildGlobal");
  mMessageManager = new nsFrameMessageManager(this,
                                              nullptr,
                                              dom::ipc::MM_CHILD);
  return NS_OK;
}

NS_IMPL_CYCLE_COLLECTION_CLASS(nsInProcessTabChildGlobal)


NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsInProcessTabChildGlobal,
                                                  DOMEventTargetHelper)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMessageManager)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
   tmp->TraverseHostObjectURIs(cb);
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(nsInProcessTabChildGlobal,
                                               DOMEventTargetHelper)
  tmp->nsMessageManagerScriptExecutor::Trace(aCallbacks, aClosure);
NS_IMPL_CYCLE_COLLECTION_TRACE_END

NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(nsInProcessTabChildGlobal,
                                                DOMEventTargetHelper)
  NS_IMPL_CYCLE_COLLECTION_UNLINK(mMessageManager)
  NS_IMPL_CYCLE_COLLECTION_UNLINK(mGlobal)
  NS_IMPL_CYCLE_COLLECTION_UNLINK(mAnonymousGlobalScopes)
   tmp->UnlinkHostObjectURIs();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(nsInProcessTabChildGlobal)
  NS_INTERFACE_MAP_ENTRY(nsIMessageListenerManager)
  NS_INTERFACE_MAP_ENTRY(nsIMessageSender)
  NS_INTERFACE_MAP_ENTRY(nsISyncMessageSender)
  NS_INTERFACE_MAP_ENTRY(nsIContentFrameMessageManager)
  NS_INTERFACE_MAP_ENTRY(nsIInProcessContentFrameMessageManager)
  NS_INTERFACE_MAP_ENTRY(nsIScriptObjectPrincipal)
  NS_INTERFACE_MAP_ENTRY(nsIGlobalObject)
  NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
  NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(ContentFrameMessageManager)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)

NS_IMPL_ADDREF_INHERITED(nsInProcessTabChildGlobal, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(nsInProcessTabChildGlobal, DOMEventTargetHelper)

void
nsInProcessTabChildGlobal::CacheFrameLoader(nsIFrameLoader* aFrameLoader)
{
  mFrameLoader = aFrameLoader;
}

NS_IMETHODIMP
nsInProcessTabChildGlobal::GetContent(mozIDOMWindowProxy** aContent)
{
  *aContent = nullptr;
  if (!mDocShell) {
    return NS_OK;
  }

  nsCOMPtr<nsPIDOMWindowOuter> window = mDocShell->GetWindow();
  window.forget(aContent);
  return NS_OK;
}

NS_IMETHODIMP
nsInProcessTabChildGlobal::GetDocShell(nsIDocShell** aDocShell)
{
  NS_IF_ADDREF(*aDocShell = mDocShell);
  return NS_OK;
}

void
nsInProcessTabChildGlobal::FireUnloadEvent()
{
  // We're called from nsDocument::MaybeInitializeFinalizeFrameLoaders, so it
  // should be safe to run script.
  MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());

  // Don't let the unload event propagate to chrome event handlers.
  mPreventEventsEscaping = true;
  DOMEventTargetHelper::DispatchTrustedEvent(NS_LITERAL_STRING("unload"));

  // Allow events fired during docshell destruction (pagehide, unload) to
  // propagate to the <browser> element since chrome code depends on this.
  mPreventEventsEscaping = false;
}

void
nsInProcessTabChildGlobal::DisconnectEventListeners()
{
  if (mDocShell) {
    if (nsCOMPtr<nsPIDOMWindowOuter> win = mDocShell->GetWindow()) {
      MOZ_ASSERT(win->IsOuterWindow());
      win->SetChromeEventHandler(win->GetChromeEventHandler());
    }
  }
  if (mListenerManager) {
    mListenerManager->Disconnect();
  }

  mDocShell = nullptr;
}

void
nsInProcessTabChildGlobal::Disconnect()
{
  mChromeMessageManager = nullptr;
  mOwner = nullptr;
  if (mMessageManager) {
    static_cast<nsFrameMessageManager*>(mMessageManager.get())->Disconnect();
    mMessageManager = nullptr;
  }
}

NS_IMETHODIMP_(nsIContent *)
nsInProcessTabChildGlobal::GetOwnerContent()
{
  return mOwner;
}

nsresult
nsInProcessTabChildGlobal::GetEventTargetParent(EventChainPreVisitor& aVisitor)
{
  aVisitor.mForceContentDispatch = true;
  aVisitor.mCanHandle = true;

#ifdef DEBUG
  if (mOwner) {
    nsCOMPtr<nsIFrameLoaderOwner> owner = do_QueryInterface(mOwner);
    RefPtr<nsFrameLoader> fl = owner->GetFrameLoader();
    if (fl) {
      NS_ASSERTION(this == fl->GetTabChildGlobalAsEventTarget(),
                   "Wrong event target!");
      NS_ASSERTION(fl->mMessageManager == mChromeMessageManager,
                   "Wrong message manager!");
    }
  }
#endif

  if (mPreventEventsEscaping) {
    aVisitor.SetParentTarget(nullptr, false);
    return NS_OK;
  }

  if (mIsBrowserOrAppFrame &&
      (!mOwner || !nsContentUtils::IsInChromeDocshell(mOwner->OwnerDoc()))) {
    if (mOwner) {
      if (nsPIDOMWindowInner* innerWindow = mOwner->OwnerDoc()->GetInnerWindow()) {
        // 'this' is already a "chrome handler", so we consider window's
        // parent target to be part of that same part of the event path.
        aVisitor.SetParentTarget(innerWindow->GetParentTarget(), false);
      }
    }
  } else {
    aVisitor.SetParentTarget(mOwner, false);
  }

  return NS_OK;
}

nsresult
nsInProcessTabChildGlobal::InitTabChildGlobal()
{
  // If you change this, please change GetCompartmentName() in XPCJSContext.cpp
  // accordingly.
  nsAutoCString id;
  id.AssignLiteral("inProcessTabChildGlobal");
  nsIURI* uri = mOwner->OwnerDoc()->GetDocumentURI();
  if (uri) {
    nsAutoCString u;
    nsresult rv = uri->GetSpec(u);
    NS_ENSURE_SUCCESS(rv, rv);
    id.AppendLiteral("?ownedBy=");
    id.Append(u);
  }
  nsISupports* scopeSupports = NS_ISUPPORTS_CAST(EventTarget*, this);
  NS_ENSURE_STATE(InitChildGlobalInternal(scopeSupports, id));
  return NS_OK;
}

class nsAsyncScriptLoad : public Runnable
{
public:
    nsAsyncScriptLoad(nsInProcessTabChildGlobal* aTabChild, const nsAString& aURL,
                      bool aRunInGlobalScope)
      : mTabChild(aTabChild), mURL(aURL), mRunInGlobalScope(aRunInGlobalScope) {}

  NS_IMETHOD Run() override
  {
    mTabChild->LoadFrameScript(mURL, mRunInGlobalScope);
    return NS_OK;
  }
  RefPtr<nsInProcessTabChildGlobal> mTabChild;
  nsString mURL;
  bool mRunInGlobalScope;
};

void
nsInProcessTabChildGlobal::LoadFrameScript(const nsAString& aURL, bool aRunInGlobalScope)
{
  if (!nsContentUtils::IsSafeToRunScript()) {
    nsContentUtils::AddScriptRunner(new nsAsyncScriptLoad(this, aURL, aRunInGlobalScope));
    return;
  }
  if (!mInitialized) {
    mInitialized = true;
    Init();
  }
  bool tmp = mLoadingScript;
  mLoadingScript = true;
  LoadScriptInternal(aURL, aRunInGlobalScope);
  mLoadingScript = tmp;
}

already_AddRefed<nsIFrameLoader>
nsInProcessTabChildGlobal::GetFrameLoader()
{
  nsCOMPtr<nsIFrameLoaderOwner> owner = do_QueryInterface(mOwner);
  nsCOMPtr<nsIFrameLoader> fl = owner ? owner->GetFrameLoader() : nullptr;
  if (!fl) {
    fl = mFrameLoader;
  }
  return fl.forget();
}