示例#1
0
NS_IMETHODIMP
nsNPAPIPluginStreamListener::Notify(nsITimer *aTimer)
{
  NS_ASSERTION(aTimer == mDataPumpTimer, "Uh, wrong timer?");

  int32_t oldStreamBufferByteCount = mStreamBufferByteCount;

  nsresult rv = OnDataAvailable(mStreamListenerPeer, nullptr, mStreamBufferByteCount);

  if (NS_FAILED(rv)) {
    // We ran into an error, no need to keep firing this timer then.
    StopDataPump();
    MaybeRunStopBinding();
    return NS_OK;
  }

  if (mStreamBufferByteCount != oldStreamBufferByteCount &&
      ((mStreamState == eStreamTypeSet && mStreamBufferByteCount < 1024) ||
       mStreamBufferByteCount == 0)) {
        // The plugin read some data and we've got less than 1024 bytes in
        // our buffer (or its empty and the stream is already
        // done). Resume the request so that we get more data off the
        // network.
        ResumeRequest();
        // Necko will pump data now that we've resumed the request.
        StopDataPump();
      }

  MaybeRunStopBinding();
  return NS_OK;
}
示例#2
0
nsresult
nsNPAPIPluginStreamListener::OnStopBinding(nsPluginStreamListenerPeer* streamPeer,
                                           nsresult status)
{
  if (NS_FAILED(status)) {
    // The stream was destroyed, or died for some reason. Make sure we
    // cancel the underlying request.
    if (mStreamListenerPeer) {
      mStreamListenerPeer->CancelRequests(status);
    }
  }

  if (!mInst || !mInst->CanFireNotifications()) {
    StopDataPump();
    return NS_ERROR_FAILURE;
  }

  // We need to detect that the stop is due to async stream init completion.
  if (mStreamStopMode == eDoDeferredStop) {
    // We shouldn't be delivering this until async init is done
    mStreamStopMode = eStopPending;
    mPendingStopBindingStatus = status;
    if (!mDataPumpTimer) {
      StartDataPump();
    }
    return NS_OK;
  }

  StopDataPump();

  NPReason reason = NS_FAILED(status) ? NPRES_NETWORK_ERR : NPRES_DONE;
  if (mRedirectDenied || status == NS_BINDING_ABORTED) {
    reason = NPRES_USER_BREAK;
  }

  // The following code can result in the deletion of 'this'. Don't
  // assume we are alive after this!
  return CleanUpStream(reason);
}
示例#3
0
nsresult
nsNPAPIPluginStreamListener::OnStopBinding(nsPluginStreamListenerPeer* streamPeer, 
                                           nsresult status)
{
  StopDataPump();
  
  if (NS_FAILED(status)) {
    // The stream was destroyed, or died for some reason. Make sure we
    // cancel the underlying request.
    if (mStreamListenerPeer) {
      mStreamListenerPeer->CancelRequests(status);
    }
  }
  
  if (!mInst || !mInst->CanFireNotifications())
    return NS_ERROR_FAILURE;

  NPReason reason = NS_FAILED(status) ? NPRES_NETWORK_ERR : NPRES_DONE;
  if (mRedirectDenied || status == NS_BINDING_ABORTED) {
    reason = NPRES_USER_BREAK;
  }

  // The following code can result in the deletion of 'this'. Don't
  // assume we are alive after this!
  //
  // Delay cleanup if the stream is of type NP_SEEK and status isn't
  // NS_BINDING_ABORTED (meaning the plugin hasn't called NPN_DestroyStream).
  // This is because even though we're done delivering data the plugin may
  // want to seek. Eventually either the plugin will call NPN_DestroyStream
  // or we'll perform cleanup when the instance goes away. See bug 91140.
  if (mStreamType != NP_SEEK ||
      (NP_SEEK == mStreamType && NS_BINDING_ABORTED == status)) {
    return CleanUpStream(reason);
  }

  return NS_OK;
}
示例#4
0
nsresult
nsNPAPIPluginStreamListener::CleanUpStream(NPReason reason)
{
  nsresult rv = NS_ERROR_FAILURE;

  // Various bits of code in the rest of this method may result in the
  // deletion of this object. Use a KungFuDeathGrip to keep ourselves
  // alive during cleanup.
  nsRefPtr<nsNPAPIPluginStreamListener> kungFuDeathGrip(this);

  if (mStreamCleanedUp)
    return NS_OK;
  
  mStreamCleanedUp = true;
  
  StopDataPump();

  // Release any outstanding redirect callback.
  if (mHTTPRedirectCallback) {
    mHTTPRedirectCallback->OnRedirectVerifyCallback(NS_ERROR_FAILURE);
    mHTTPRedirectCallback = nullptr;
  }

  // Seekable streams have an extra addref when they are created which must
  // be matched here.
  if (NP_SEEK == mStreamType && mStreamStarted)
    NS_RELEASE_THIS();

  if (mStreamListenerPeer) {
    mStreamListenerPeer->CancelRequests(NS_BINDING_ABORTED);
    mStreamListenerPeer = nullptr;
  }

  if (!mInst || !mInst->CanFireNotifications())
    return rv;
  
  PluginDestructionGuard guard(mInst);

  nsNPAPIPlugin* plugin = mInst->GetPlugin();
  if (!plugin || !plugin->GetLibrary())
    return rv;

  NPPluginFuncs* pluginFunctions = plugin->PluginFuncs();

  NPP npp;
  mInst->GetNPP(&npp);

  if (mStreamStarted && pluginFunctions->destroystream) {
    NPPAutoPusher nppPusher(npp);

    NPError error;
    NS_TRY_SAFE_CALL_RETURN(error, (*pluginFunctions->destroystream)(npp, &mNPStreamWrapper->mNPStream, reason), mInst,
                            NS_PLUGIN_CALL_UNSAFE_TO_REENTER_GECKO);
    
    NPP_PLUGIN_LOG(PLUGIN_LOG_NORMAL,
                   ("NPP DestroyStream called: this=%p, npp=%p, reason=%d, return=%d, url=%s\n",
                    this, npp, reason, error, mNPStreamWrapper->mNPStream.url));
    
    if (error == NPERR_NO_ERROR)
      rv = NS_OK;
  }
  
  mStreamStarted = false;
  
  // fire notification back to plugin, just like before
  CallURLNotify(reason);
  
  return rv;
}