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/* 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
#include "chrome/common/ipc_message.h"
#include "gtest/gtest.h"
#include "ipc/nsGUIEventIPC.h"
#include "mozilla/TouchEvents.h"
#include "mozilla/UniquePtr.h"
namespace mozilla {
static bool RoundTrip(const WidgetTouchEvent& aIn, WidgetTouchEvent* aOut) {
UniquePtr<IPC::Message> msg(new IPC::Message(MSG_ROUTING_NONE, 0));
{
IPC::MessageWriter writer(*msg);
IPC::ParamTraits<WidgetTouchEvent>::Write(&writer, aIn);
}
IPC::MessageReader reader(*msg);
return IPC::ParamTraits<WidgetTouchEvent>::Read(&reader, aOut);
}
TEST(WidgetTouchEventIPC, ValidMessageRoundTrips)
{
// Every message that IsValidMessageForIPC pairs with eTouchEventClass must
// survive the round trip; the receiver-side check in
// ParamTraits<WidgetEvent>::ReadForDerivedClass must not reject them.
for (EventMessage message : {eTouchStart, eTouchMove, eTouchEnd, eTouchCancel,
eTouchPointerCancel}) {
WidgetTouchEvent in(/* aIsTrusted */ true, message, /* aWidget */ nullptr);
WidgetTouchEvent out(/* aIsTrusted */ true, eTouchStart,
/* aWidget */ nullptr);
EXPECT_TRUE(RoundTrip(in, &out)) << "message=" << message;
EXPECT_EQ(out.mMessage, message);
}
}
TEST(WidgetTouchEventIPC, InvalidMessageIsRejected)
{
// ParamTraits<WidgetEvent>::ReadForDerivedClass must reject any mMessage
// that IsValidMessageForIPC does not pair with eTouchEventClass. Otherwise
// a compromised content process could feed an out-of-range value to e.g.
// MultiTouchInput's switch-on-mMessage, leaving its MultiTouchType enum
// uninitialized in release builds. The cases below cover both messages
// that look touch-adjacent (eTouchRawUpdate is internal-only) and messages
// that belong to entirely different event classes.
for (EventMessage message :
{eVoidEvent, eTouchRawUpdate, eMouseDown, eKeyDown, eWheel, ePointerDown,
eDragStart, eCompositionStart, eSetSelection}) {
WidgetTouchEvent in(/* aIsTrusted */ true, message, /* aWidget */ nullptr);
WidgetTouchEvent out(/* aIsTrusted */ true, eTouchStart,
/* aWidget */ nullptr);
EXPECT_FALSE(RoundTrip(in, &out)) << "message=" << message;
}
}
} // namespace mozilla