mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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158 lines
3.5 KiB
C++
158 lines
3.5 KiB
C++
/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "BrowserStreamParent.h"
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#include "PluginInstanceParent.h"
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#include "nsNPAPIPlugin.h"
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#include "mozilla/unused.h"
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// How much data are we willing to send across the wire
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// in one chunk?
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static const int32_t kSendDataChunk = 0x4000;
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namespace mozilla {
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namespace plugins {
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BrowserStreamParent::BrowserStreamParent(PluginInstanceParent* npp,
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NPStream* stream)
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: mNPP(npp)
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, mStream(stream)
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, mState(ALIVE)
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{
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mStream->pdata = static_cast<AStream*>(this);
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}
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BrowserStreamParent::~BrowserStreamParent()
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{
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}
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bool
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BrowserStreamParent::AnswerNPN_RequestRead(const IPCByteRanges& ranges,
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NPError* result)
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{
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PLUGIN_LOG_DEBUG_FUNCTION;
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switch (mState) {
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case ALIVE:
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break;
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case DYING:
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*result = NPERR_GENERIC_ERROR;
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return true;
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default:
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NS_ERROR("Unexpected state");
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return false;
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}
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if (!mStream)
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return false;
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if (ranges.size() > INT32_MAX)
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return false;
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nsAutoArrayPtr<NPByteRange> rp(new NPByteRange[ranges.size()]);
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for (uint32_t i = 0; i < ranges.size(); ++i) {
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rp[i].offset = ranges[i].offset;
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rp[i].length = ranges[i].length;
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rp[i].next = &rp[i + 1];
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}
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rp[ranges.size() - 1].next = nullptr;
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*result = mNPP->mNPNIface->requestread(mStream, rp);
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return true;
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}
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bool
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BrowserStreamParent::RecvNPN_DestroyStream(const NPReason& reason)
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{
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switch (mState) {
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case ALIVE:
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break;
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case DYING:
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return true;
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default:
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NS_ERROR("Unexpected state");
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return false;
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};
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mNPP->mNPNIface->destroystream(mNPP->mNPP, mStream, reason);
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return true;
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}
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void
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BrowserStreamParent::NPP_DestroyStream(NPReason reason)
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{
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NS_ASSERTION(ALIVE == mState, "NPP_DestroyStream called twice?");
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mState = DYING;
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unused << SendNPP_DestroyStream(reason);
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}
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bool
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BrowserStreamParent::RecvStreamDestroyed()
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{
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if (DYING != mState) {
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NS_ERROR("Unexpected state");
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return false;
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}
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mStreamPeer = nullptr;
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mState = DELETING;
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return Send__delete__(this);
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}
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int32_t
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BrowserStreamParent::WriteReady()
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{
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return kSendDataChunk;
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}
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int32_t
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BrowserStreamParent::Write(int32_t offset,
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int32_t len,
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void* buffer)
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{
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PLUGIN_LOG_DEBUG_FUNCTION;
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NS_ASSERTION(ALIVE == mState, "Sending data after NPP_DestroyStream?");
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NS_ASSERTION(len > 0, "Non-positive length to NPP_Write");
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if (len > kSendDataChunk)
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len = kSendDataChunk;
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return SendWrite(offset,
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nsCString(static_cast<char*>(buffer), len),
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mStream->end) ?
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len : -1;
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}
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void
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BrowserStreamParent::StreamAsFile(const char* fname)
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{
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PLUGIN_LOG_DEBUG_FUNCTION;
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NS_ASSERTION(ALIVE == mState,
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"Calling streamasfile after NPP_DestroyStream?");
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// Make sure our stream survives until the plugin process tells us we've
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// been destroyed (until RecvStreamDestroyed() is called). Since we retain
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// mStreamPeer at most once, we won't get in trouble if StreamAsFile() is
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// called more than once.
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if (!mStreamPeer) {
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nsNPAPIPlugin::RetainStream(mStream, getter_AddRefs(mStreamPeer));
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}
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unused << SendNPP_StreamAsFile(nsCString(fname));
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return;
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}
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} // namespace plugins
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} // namespace mozilla
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