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gecko/dom/plugins/ipc/PluginMessageUtils.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=4 ts=4 et :
* 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/. */
#ifndef DOM_PLUGINS_PLUGINMESSAGEUTILS_H
#define DOM_PLUGINS_PLUGINMESSAGEUTILS_H
#include "ipc/IPCMessageUtils.h"
#include "base/message_loop.h"
#include "mozilla/ipc/MessageChannel.h"
#include "mozilla/ipc/CrossProcessMutex.h"
#include "gfxipc/ShadowLayerUtils.h"
#include "npapi.h"
#include "npruntime.h"
#include "npfunctions.h"
#include "nsAutoPtr.h"
#include "nsString.h"
#include "nsTArray.h"
#include "prlog.h"
#include "nsHashKeys.h"
#ifdef MOZ_CRASHREPORTER
# include "nsExceptionHandler.h"
#endif
#ifdef XP_MACOSX
#include "PluginInterposeOSX.h"
#else
namespace mac_plugin_interposing { class NSCursorInfo { }; }
#endif
using mac_plugin_interposing::NSCursorInfo;
namespace mozilla {
namespace plugins {
using layers::SurfaceDescriptorX11;
enum ScriptableObjectType
{
LocalObject,
Proxy
};
mozilla::ipc::RacyInterruptPolicy
MediateRace(const mozilla::ipc::MessageChannel::Message& parent,
const mozilla::ipc::MessageChannel::Message& child);
std::string
MungePluginDsoPath(const std::string& path);
std::string
UnmungePluginDsoPath(const std::string& munged);
extern PRLogModuleInfo* GetPluginLog();
const uint32_t kAllowAsyncDrawing = 0x1;
inline bool IsDrawingModelAsync(int16_t aModel) {
return aModel == NPDrawingModelAsyncBitmapSurface
#ifdef XP_WIN
|| aModel == NPDrawingModelAsyncWindowsDXGISurface
#endif
;
}
#if defined(_MSC_VER)
#define FULLFUNCTION __FUNCSIG__
#elif defined(__GNUC__)
#define FULLFUNCTION __PRETTY_FUNCTION__
#else
#define FULLFUNCTION __FUNCTION__
#endif
#define PLUGIN_LOG_DEBUG(args) PR_LOG(GetPluginLog(), PR_LOG_DEBUG, args)
#define PLUGIN_LOG_DEBUG_FUNCTION PR_LOG(GetPluginLog(), PR_LOG_DEBUG, ("%s", FULLFUNCTION))
#define PLUGIN_LOG_DEBUG_METHOD PR_LOG(GetPluginLog(), PR_LOG_DEBUG, ("%s [%p]", FULLFUNCTION, (void*) this))
/**
* This is NPByteRange without the linked list.
*/
struct IPCByteRange
{
int32_t offset;
uint32_t length;
};
typedef std::vector<IPCByteRange> IPCByteRanges;
typedef nsCString Buffer;
struct NPRemoteWindow
{
NPRemoteWindow();
uint64_t window;
int32_t x;
int32_t y;
uint32_t width;
uint32_t height;
NPRect clipRect;
NPWindowType type;
#if defined(MOZ_X11) && defined(XP_UNIX) && !defined(XP_MACOSX)
VisualID visualID;
Colormap colormap;
#endif /* XP_UNIX */
#if defined(XP_WIN)
base::SharedMemoryHandle surfaceHandle;
#endif
#if defined(XP_MACOSX)
double contentsScaleFactor;
#endif
};
#ifdef XP_WIN
typedef HWND NativeWindowHandle;
#elif defined(MOZ_X11)
typedef XID NativeWindowHandle;
#elif defined(XP_MACOSX) || defined(ANDROID) || defined(MOZ_WIDGET_QT)
typedef intptr_t NativeWindowHandle; // never actually used, will always be 0
#else
#error Need NativeWindowHandle for this platform
#endif
#ifdef XP_WIN
typedef base::SharedMemoryHandle WindowsSharedMemoryHandle;
typedef HANDLE DXGISharedSurfaceHandle;
#else
typedef mozilla::null_t WindowsSharedMemoryHandle;
typedef mozilla::null_t DXGISharedSurfaceHandle;
#endif
// XXX maybe not the best place for these. better one?
#define VARSTR(v_) case v_: return #v_
inline const char* const
NPPVariableToString(NPPVariable aVar)
{
switch (aVar) {
VARSTR(NPPVpluginNameString);
VARSTR(NPPVpluginDescriptionString);
VARSTR(NPPVpluginWindowBool);
VARSTR(NPPVpluginTransparentBool);
VARSTR(NPPVjavaClass);
VARSTR(NPPVpluginWindowSize);
VARSTR(NPPVpluginTimerInterval);
VARSTR(NPPVpluginScriptableInstance);
VARSTR(NPPVpluginScriptableIID);
VARSTR(NPPVjavascriptPushCallerBool);
VARSTR(NPPVpluginKeepLibraryInMemory);
VARSTR(NPPVpluginNeedsXEmbed);
VARSTR(NPPVpluginScriptableNPObject);
VARSTR(NPPVformValue);
VARSTR(NPPVpluginUrlRequestsDisplayedBool);
VARSTR(NPPVpluginWantsAllNetworkStreams);
#ifdef XP_MACOSX
VARSTR(NPPVpluginDrawingModel);
VARSTR(NPPVpluginEventModel);
#endif
default: return "???";
}
}
inline const char*
NPNVariableToString(NPNVariable aVar)
{
switch(aVar) {
VARSTR(NPNVxDisplay);
VARSTR(NPNVxtAppContext);
VARSTR(NPNVnetscapeWindow);
VARSTR(NPNVjavascriptEnabledBool);
VARSTR(NPNVasdEnabledBool);
VARSTR(NPNVisOfflineBool);
VARSTR(NPNVserviceManager);
VARSTR(NPNVDOMElement);
VARSTR(NPNVDOMWindow);
VARSTR(NPNVToolkit);
VARSTR(NPNVSupportsXEmbedBool);
VARSTR(NPNVWindowNPObject);
VARSTR(NPNVPluginElementNPObject);
VARSTR(NPNVSupportsWindowless);
VARSTR(NPNVprivateModeBool);
VARSTR(NPNVdocumentOrigin);
default: return "???";
}
}
#undef VARSTR
inline bool IsPluginThread()
{
MessageLoop* loop = MessageLoop::current();
if (!loop)
return false;
return (loop->type() == MessageLoop::TYPE_UI);
}
inline void AssertPluginThread()
{
NS_ASSERTION(IsPluginThread(), "Should be on the plugin's main thread!");
}
#define ENSURE_PLUGIN_THREAD(retval) \
PR_BEGIN_MACRO \
if (!IsPluginThread()) { \
NS_WARNING("Not running on the plugin's main thread!"); \
return (retval); \
} \
PR_END_MACRO
#define ENSURE_PLUGIN_THREAD_VOID() \
PR_BEGIN_MACRO \
if (!IsPluginThread()) { \
NS_WARNING("Not running on the plugin's main thread!"); \
return; \
} \
PR_END_MACRO
void DeferNPObjectLastRelease(const NPNetscapeFuncs* f, NPObject* o);
void DeferNPVariantLastRelease(const NPNetscapeFuncs* f, NPVariant* v);
// in NPAPI, char* == nullptr is sometimes meaningful. the following is
// helper code for dealing with nullable nsCString's
inline nsCString
NullableString(const char* aString)
{
if (!aString) {
nsCString str;
str.SetIsVoid(true);
return str;
}
return nsCString(aString);
}
inline const char*
NullableStringGet(const nsCString& str)
{
if (str.IsVoid())
return nullptr;
return str.get();
}
struct DeletingObjectEntry : public nsPtrHashKey<NPObject>
{
DeletingObjectEntry(const NPObject* key)
: nsPtrHashKey<NPObject>(key)
, mDeleted(false)
{ }
bool mDeleted;
};
#ifdef XP_WIN
// The private event used for double-pass widgetless plugin rendering.
UINT DoublePassRenderingEvent();
#endif
} /* namespace plugins */
} /* namespace mozilla */
namespace IPC {
template <>
struct ParamTraits<NPRect>
{
typedef NPRect paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
WriteParam(aMsg, aParam.top);
WriteParam(aMsg, aParam.left);
WriteParam(aMsg, aParam.bottom);
WriteParam(aMsg, aParam.right);
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
uint16_t top, left, bottom, right;
if (ReadParam(aMsg, aIter, &top) &&
ReadParam(aMsg, aIter, &left) &&
ReadParam(aMsg, aIter, &bottom) &&
ReadParam(aMsg, aIter, &right)) {
aResult->top = top;
aResult->left = left;
aResult->bottom = bottom;
aResult->right = right;
return true;
}
return false;
}
static void Log(const paramType& aParam, std::wstring* aLog)
{
aLog->append(StringPrintf(L"[%u, %u, %u, %u]", aParam.top, aParam.left,
aParam.bottom, aParam.right));
}
};
template <>
struct ParamTraits<NPWindowType>
{
typedef NPWindowType paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
aMsg->WriteInt16(int16_t(aParam));
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
int16_t result;
if (aMsg->ReadInt16(aIter, &result)) {
*aResult = paramType(result);
return true;
}
return false;
}
static void Log(const paramType& aParam, std::wstring* aLog)
{
aLog->append(StringPrintf(L"%d", int16_t(aParam)));
}
};
template <>
struct ParamTraits<NPImageFormat>
{
typedef NPImageFormat paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
aMsg->WriteInt16(int16_t(aParam));
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
int16_t result;
if (aMsg->ReadInt16(aIter, &result)) {
*aResult = paramType(result);
return true;
}
return false;
}
static void Log(const paramType& aParam, std::wstring* aLog)
{
aLog->append(StringPrintf(L"%d", int16_t(aParam)));
}
};
template <>
struct ParamTraits<mozilla::plugins::NPRemoteWindow>
{
typedef mozilla::plugins::NPRemoteWindow paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
aMsg->WriteUInt64(aParam.window);
WriteParam(aMsg, aParam.x);
WriteParam(aMsg, aParam.y);
WriteParam(aMsg, aParam.width);
WriteParam(aMsg, aParam.height);
WriteParam(aMsg, aParam.clipRect);
WriteParam(aMsg, aParam.type);
#if defined(MOZ_X11) && defined(XP_UNIX) && !defined(XP_MACOSX)
aMsg->WriteULong(aParam.visualID);
aMsg->WriteULong(aParam.colormap);
#endif
#if defined(XP_WIN)
WriteParam(aMsg, aParam.surfaceHandle);
#endif
#if defined(XP_MACOSX)
aMsg->WriteDouble(aParam.contentsScaleFactor);
#endif
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
uint64_t window;
int32_t x, y;
uint32_t width, height;
NPRect clipRect;
NPWindowType type;
if (!(aMsg->ReadUInt64(aIter, &window) &&
ReadParam(aMsg, aIter, &x) &&
ReadParam(aMsg, aIter, &y) &&
ReadParam(aMsg, aIter, &width) &&
ReadParam(aMsg, aIter, &height) &&
ReadParam(aMsg, aIter, &clipRect) &&
ReadParam(aMsg, aIter, &type)))
return false;
#if defined(MOZ_X11) && defined(XP_UNIX) && !defined(XP_MACOSX)
unsigned long visualID;
unsigned long colormap;
if (!(aMsg->ReadULong(aIter, &visualID) &&
aMsg->ReadULong(aIter, &colormap)))
return false;
#endif
#if defined(XP_WIN)
base::SharedMemoryHandle surfaceHandle;
if (!ReadParam(aMsg, aIter, &surfaceHandle))
return false;
#endif
#if defined(XP_MACOSX)
double contentsScaleFactor;
if (!aMsg->ReadDouble(aIter, &contentsScaleFactor))
return false;
#endif
aResult->window = window;
aResult->x = x;
aResult->y = y;
aResult->width = width;
aResult->height = height;
aResult->clipRect = clipRect;
aResult->type = type;
#if defined(MOZ_X11) && defined(XP_UNIX) && !defined(XP_MACOSX)
aResult->visualID = visualID;
aResult->colormap = colormap;
#endif
#if defined(XP_WIN)
aResult->surfaceHandle = surfaceHandle;
#endif
#if defined(XP_MACOSX)
aResult->contentsScaleFactor = contentsScaleFactor;
#endif
return true;
}
static void Log(const paramType& aParam, std::wstring* aLog)
{
aLog->append(StringPrintf(L"[%u, %d, %d, %u, %u, %d",
(unsigned long)aParam.window,
aParam.x, aParam.y, aParam.width,
aParam.height, (long)aParam.type));
}
};
template <>
struct ParamTraits<NPString>
{
typedef NPString paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
WriteParam(aMsg, aParam.UTF8Length);
aMsg->WriteBytes(aParam.UTF8Characters,
aParam.UTF8Length * sizeof(NPUTF8));
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
if (ReadParam(aMsg, aIter, &aResult->UTF8Length)) {
int byteCount = aResult->UTF8Length * sizeof(NPUTF8);
if (!byteCount) {
aResult->UTF8Characters = "\0";
return true;
}
const char* messageBuffer = nullptr;
nsAutoArrayPtr<char> newBuffer(new char[byteCount]);
if (newBuffer && aMsg->ReadBytes(aIter, &messageBuffer, byteCount )) {
memcpy((void*)messageBuffer, newBuffer.get(), byteCount);
aResult->UTF8Characters = newBuffer.forget();
return true;
}
}
return false;
}
static void Log(const paramType& aParam, std::wstring* aLog)
{
aLog->append(StringPrintf(L"%s", aParam.UTF8Characters));
}
};
#ifdef XP_MACOSX
template <>
struct ParamTraits<NPNSString*>
{
typedef NPNSString* paramType;
// Empty string writes a length of 0 and no buffer.
// We don't write a nullptr terminating character in buffers.
static void Write(Message* aMsg, const paramType& aParam)
{
CFStringRef cfString = (CFStringRef)aParam;
// Write true if we have a string, false represents nullptr.
aMsg->WriteBool(!!cfString);
if (!cfString) {
return;
}
long length = ::CFStringGetLength(cfString);
WriteParam(aMsg, length);
if (length == 0) {
return;
}
// Attempt to get characters without any allocation/conversion.
if (::CFStringGetCharactersPtr(cfString)) {
aMsg->WriteBytes(::CFStringGetCharactersPtr(cfString), length * sizeof(UniChar));
} else {
UniChar *buffer = (UniChar*)moz_xmalloc(length * sizeof(UniChar));
::CFStringGetCharacters(cfString, ::CFRangeMake(0, length), buffer);
aMsg->WriteBytes(buffer, length * sizeof(UniChar));
free(buffer);
}
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
bool haveString = false;
if (!aMsg->ReadBool(aIter, &haveString)) {
return false;
}
if (!haveString) {
*aResult = nullptr;
return true;
}
long length;
if (!ReadParam(aMsg, aIter, &length)) {
return false;
}
UniChar* buffer = nullptr;
if (length != 0) {
if (!aMsg->ReadBytes(aIter, (const char**)&buffer, length * sizeof(UniChar)) ||
!buffer) {
return false;
}
}
*aResult = (NPNSString*)::CFStringCreateWithBytes(kCFAllocatorDefault, (UInt8*)buffer,
length * sizeof(UniChar),
kCFStringEncodingUTF16, false);
if (!*aResult) {
return false;
}
return true;
}
};
#endif
#ifdef XP_MACOSX
template <>
struct ParamTraits<NSCursorInfo>
{
typedef NSCursorInfo paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
NSCursorInfo::Type type = aParam.GetType();
aMsg->WriteInt(type);
nsPoint hotSpot = aParam.GetHotSpot();
WriteParam(aMsg, hotSpot.x);
WriteParam(aMsg, hotSpot.y);
uint32_t dataLength = aParam.GetCustomImageDataLength();
WriteParam(aMsg, dataLength);
if (dataLength == 0) {
return;
}
uint8_t* buffer = (uint8_t*)moz_xmalloc(dataLength);
memcpy(buffer, aParam.GetCustomImageData(), dataLength);
aMsg->WriteBytes(buffer, dataLength);
free(buffer);
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
NSCursorInfo::Type type;
if (!aMsg->ReadInt(aIter, (int*)&type)) {
return false;
}
nscoord hotSpotX, hotSpotY;
if (!ReadParam(aMsg, aIter, &hotSpotX) ||
!ReadParam(aMsg, aIter, &hotSpotY)) {
return false;
}
uint32_t dataLength;
if (!ReadParam(aMsg, aIter, &dataLength)) {
return false;
}
uint8_t* data = nullptr;
if (dataLength != 0) {
if (!aMsg->ReadBytes(aIter, (const char**)&data, dataLength) || !data) {
return false;
}
}
aResult->SetType(type);
aResult->SetHotSpot(nsPoint(hotSpotX, hotSpotY));
aResult->SetCustomImageData(data, dataLength);
return true;
}
static void Log(const paramType& aParam, std::wstring* aLog)
{
const char* typeName = aParam.GetTypeName();
nsPoint hotSpot = aParam.GetHotSpot();
int hotSpotX, hotSpotY;
#ifdef NS_COORD_IS_FLOAT
hotSpotX = rint(hotSpot.x);
hotSpotY = rint(hotSpot.y);
#else
hotSpotX = hotSpot.x;
hotSpotY = hotSpot.y;
#endif
uint32_t dataLength = aParam.GetCustomImageDataLength();
uint8_t* data = aParam.GetCustomImageData();
aLog->append(StringPrintf(L"[%s, (%i %i), %u, %p]",
typeName, hotSpotX, hotSpotY, dataLength, data));
}
};
#else
template<>
struct ParamTraits<NSCursorInfo>
{
typedef NSCursorInfo paramType;
static void Write(Message* aMsg, const paramType& aParam) {
NS_RUNTIMEABORT("NSCursorInfo isn't meaningful on this platform");
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult) {
NS_RUNTIMEABORT("NSCursorInfo isn't meaningful on this platform");
return false;
}
};
#endif // #ifdef XP_MACOSX
template <>
struct ParamTraits<NPVariant>
{
typedef NPVariant paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
if (NPVARIANT_IS_VOID(aParam)) {
aMsg->WriteInt(0);
return;
}
if (NPVARIANT_IS_NULL(aParam)) {
aMsg->WriteInt(1);
return;
}
if (NPVARIANT_IS_BOOLEAN(aParam)) {
aMsg->WriteInt(2);
WriteParam(aMsg, NPVARIANT_TO_BOOLEAN(aParam));
return;
}
if (NPVARIANT_IS_INT32(aParam)) {
aMsg->WriteInt(3);
WriteParam(aMsg, NPVARIANT_TO_INT32(aParam));
return;
}
if (NPVARIANT_IS_DOUBLE(aParam)) {
aMsg->WriteInt(4);
WriteParam(aMsg, NPVARIANT_TO_DOUBLE(aParam));
return;
}
if (NPVARIANT_IS_STRING(aParam)) {
aMsg->WriteInt(5);
WriteParam(aMsg, NPVARIANT_TO_STRING(aParam));
return;
}
NS_ERROR("Unsupported type!");
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
int type;
if (!aMsg->ReadInt(aIter, &type)) {
return false;
}
switch (type) {
case 0:
VOID_TO_NPVARIANT(*aResult);
return true;
case 1:
NULL_TO_NPVARIANT(*aResult);
return true;
case 2: {
bool value;
if (ReadParam(aMsg, aIter, &value)) {
BOOLEAN_TO_NPVARIANT(value, *aResult);
return true;
}
} break;
case 3: {
int32_t value;
if (ReadParam(aMsg, aIter, &value)) {
INT32_TO_NPVARIANT(value, *aResult);
return true;
}
} break;
case 4: {
double value;
if (ReadParam(aMsg, aIter, &value)) {
DOUBLE_TO_NPVARIANT(value, *aResult);
return true;
}
} break;
case 5: {
NPString value;
if (ReadParam(aMsg, aIter, &value)) {
STRINGN_TO_NPVARIANT(value.UTF8Characters, value.UTF8Length,
*aResult);
return true;
}
} break;
default:
NS_ERROR("Unsupported type!");
}
return false;
}
static void Log(const paramType& aParam, std::wstring* aLog)
{
if (NPVARIANT_IS_VOID(aParam)) {
aLog->append(L"[void]");
return;
}
if (NPVARIANT_IS_NULL(aParam)) {
aLog->append(L"[null]");
return;
}
if (NPVARIANT_IS_BOOLEAN(aParam)) {
LogParam(NPVARIANT_TO_BOOLEAN(aParam), aLog);
return;
}
if (NPVARIANT_IS_INT32(aParam)) {
LogParam(NPVARIANT_TO_INT32(aParam), aLog);
return;
}
if (NPVARIANT_IS_DOUBLE(aParam)) {
LogParam(NPVARIANT_TO_DOUBLE(aParam), aLog);
return;
}
if (NPVARIANT_IS_STRING(aParam)) {
LogParam(NPVARIANT_TO_STRING(aParam), aLog);
return;
}
NS_ERROR("Unsupported type!");
}
};
template <>
struct ParamTraits<mozilla::plugins::IPCByteRange>
{
typedef mozilla::plugins::IPCByteRange paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
WriteParam(aMsg, aParam.offset);
WriteParam(aMsg, aParam.length);
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
paramType p;
if (ReadParam(aMsg, aIter, &p.offset) &&
ReadParam(aMsg, aIter, &p.length)) {
*aResult = p;
return true;
}
return false;
}
};
template <>
struct ParamTraits<NPNVariable>
{
typedef NPNVariable paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
WriteParam(aMsg, int(aParam));
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
int intval;
if (ReadParam(aMsg, aIter, &intval)) {
*aResult = paramType(intval);
return true;
}
return false;
}
};
template<>
struct ParamTraits<NPNURLVariable>
{
typedef NPNURLVariable paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
WriteParam(aMsg, int(aParam));
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
int intval;
if (ReadParam(aMsg, aIter, &intval)) {
switch (intval) {
case NPNURLVCookie:
case NPNURLVProxy:
*aResult = paramType(intval);
return true;
}
}
return false;
}
};
template<>
struct ParamTraits<NPCoordinateSpace>
{
typedef NPCoordinateSpace paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
WriteParam(aMsg, int32_t(aParam));
}
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
int32_t intval;
if (ReadParam(aMsg, aIter, &intval)) {
switch (intval) {
case NPCoordinateSpacePlugin:
case NPCoordinateSpaceWindow:
case NPCoordinateSpaceFlippedWindow:
case NPCoordinateSpaceScreen:
case NPCoordinateSpaceFlippedScreen:
*aResult = paramType(intval);
return true;
}
}
return false;
}
};
} /* namespace IPC */
// Serializing NPEvents is completely platform-specific and can be rather
// intricate depending on the platform. So for readability we split it
// into separate files and have the only macro crud live here.
//
// NB: these guards are based on those where struct NPEvent is defined
// in npapi.h. They should be kept in sync.
#if defined(XP_MACOSX)
# include "mozilla/plugins/NPEventOSX.h"
#elif defined(XP_WIN)
# include "mozilla/plugins/NPEventWindows.h"
#elif defined(ANDROID)
# include "mozilla/plugins/NPEventAndroid.h"
#elif defined(XP_UNIX)
# include "mozilla/plugins/NPEventUnix.h"
#else
# error Unsupported platform
#endif
#endif /* DOM_PLUGINS_PLUGINMESSAGEUTILS_H */
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