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;
}
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);
}
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;
}
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;
}