mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-05 00:25:27 +00:00
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 -*- */
|
|
/* 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 "BrowserStreamParent.h"
|
|
#include "PluginInstanceParent.h"
|
|
#include "nsNPAPIPlugin.h"
|
|
|
|
#include "mozilla/unused.h"
|
|
|
|
// How much data are we willing to send across the wire
|
|
// in one chunk?
|
|
static const int32_t kSendDataChunk = 0x4000;
|
|
|
|
namespace mozilla {
|
|
namespace plugins {
|
|
|
|
BrowserStreamParent::BrowserStreamParent(PluginInstanceParent* npp,
|
|
NPStream* stream)
|
|
: mNPP(npp)
|
|
, mStream(stream)
|
|
, mState(ALIVE)
|
|
{
|
|
mStream->pdata = static_cast<AStream*>(this);
|
|
}
|
|
|
|
BrowserStreamParent::~BrowserStreamParent()
|
|
{
|
|
}
|
|
|
|
bool
|
|
BrowserStreamParent::AnswerNPN_RequestRead(const IPCByteRanges& ranges,
|
|
NPError* result)
|
|
{
|
|
PLUGIN_LOG_DEBUG_FUNCTION;
|
|
|
|
switch (mState) {
|
|
case ALIVE:
|
|
break;
|
|
|
|
case DYING:
|
|
*result = NPERR_GENERIC_ERROR;
|
|
return true;
|
|
|
|
default:
|
|
NS_ERROR("Unexpected state");
|
|
return false;
|
|
}
|
|
|
|
if (!mStream)
|
|
return false;
|
|
|
|
if (ranges.size() > INT32_MAX)
|
|
return false;
|
|
|
|
nsAutoArrayPtr<NPByteRange> rp(new NPByteRange[ranges.size()]);
|
|
for (uint32_t i = 0; i < ranges.size(); ++i) {
|
|
rp[i].offset = ranges[i].offset;
|
|
rp[i].length = ranges[i].length;
|
|
rp[i].next = &rp[i + 1];
|
|
}
|
|
rp[ranges.size() - 1].next = nullptr;
|
|
|
|
*result = mNPP->mNPNIface->requestread(mStream, rp);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
BrowserStreamParent::RecvNPN_DestroyStream(const NPReason& reason)
|
|
{
|
|
switch (mState) {
|
|
case ALIVE:
|
|
break;
|
|
|
|
case DYING:
|
|
return true;
|
|
|
|
default:
|
|
NS_ERROR("Unexpected state");
|
|
return false;
|
|
};
|
|
|
|
mNPP->mNPNIface->destroystream(mNPP->mNPP, mStream, reason);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
BrowserStreamParent::NPP_DestroyStream(NPReason reason)
|
|
{
|
|
NS_ASSERTION(ALIVE == mState, "NPP_DestroyStream called twice?");
|
|
mState = DYING;
|
|
unused << SendNPP_DestroyStream(reason);
|
|
}
|
|
|
|
bool
|
|
BrowserStreamParent::RecvStreamDestroyed()
|
|
{
|
|
if (DYING != mState) {
|
|
NS_ERROR("Unexpected state");
|
|
return false;
|
|
}
|
|
|
|
mStreamPeer = nullptr;
|
|
|
|
mState = DELETING;
|
|
return Send__delete__(this);
|
|
}
|
|
|
|
int32_t
|
|
BrowserStreamParent::WriteReady()
|
|
{
|
|
return kSendDataChunk;
|
|
}
|
|
|
|
int32_t
|
|
BrowserStreamParent::Write(int32_t offset,
|
|
int32_t len,
|
|
void* buffer)
|
|
{
|
|
PLUGIN_LOG_DEBUG_FUNCTION;
|
|
|
|
NS_ASSERTION(ALIVE == mState, "Sending data after NPP_DestroyStream?");
|
|
NS_ASSERTION(len > 0, "Non-positive length to NPP_Write");
|
|
|
|
if (len > kSendDataChunk)
|
|
len = kSendDataChunk;
|
|
|
|
return SendWrite(offset,
|
|
nsCString(static_cast<char*>(buffer), len),
|
|
mStream->end) ?
|
|
len : -1;
|
|
}
|
|
|
|
void
|
|
BrowserStreamParent::StreamAsFile(const char* fname)
|
|
{
|
|
PLUGIN_LOG_DEBUG_FUNCTION;
|
|
|
|
NS_ASSERTION(ALIVE == mState,
|
|
"Calling streamasfile after NPP_DestroyStream?");
|
|
|
|
// Make sure our stream survives until the plugin process tells us we've
|
|
// been destroyed (until RecvStreamDestroyed() is called). Since we retain
|
|
// mStreamPeer at most once, we won't get in trouble if StreamAsFile() is
|
|
// called more than once.
|
|
if (!mStreamPeer) {
|
|
nsNPAPIPlugin::RetainStream(mStream, getter_AddRefs(mStreamPeer));
|
|
}
|
|
|
|
unused << SendNPP_StreamAsFile(nsCString(fname));
|
|
return;
|
|
}
|
|
|
|
} // namespace plugins
|
|
} // namespace mozilla
|