135 lines
5.9 KiB
C++
135 lines
5.9 KiB
C++
/*
|
|
* Copyright (C) 2014 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <input/InputTransport.h>
|
|
#include <input/Input.h>
|
|
|
|
namespace android {
|
|
|
|
#define CHECK_OFFSET(type, member, expected_offset) \
|
|
static_assert((offsetof(type, member) == (expected_offset)), "")
|
|
|
|
struct Foo {
|
|
uint32_t dummy;
|
|
PointerCoords coords;
|
|
};
|
|
|
|
void TestPointerCoordsAlignment() {
|
|
CHECK_OFFSET(Foo, coords, 8);
|
|
}
|
|
|
|
void TestInputMessageAlignment() {
|
|
CHECK_OFFSET(InputMessage, body, 8);
|
|
|
|
CHECK_OFFSET(InputMessage::Body::Key, seq, 0);
|
|
CHECK_OFFSET(InputMessage::Body::Key, eventId, 4);
|
|
CHECK_OFFSET(InputMessage::Body::Key, eventTime, 8);
|
|
CHECK_OFFSET(InputMessage::Body::Key, deviceId, 16);
|
|
CHECK_OFFSET(InputMessage::Body::Key, source, 20);
|
|
CHECK_OFFSET(InputMessage::Body::Key, displayId, 24);
|
|
CHECK_OFFSET(InputMessage::Body::Key, hmac, 28);
|
|
CHECK_OFFSET(InputMessage::Body::Key, action, 60);
|
|
CHECK_OFFSET(InputMessage::Body::Key, flags, 64);
|
|
CHECK_OFFSET(InputMessage::Body::Key, keyCode, 68);
|
|
CHECK_OFFSET(InputMessage::Body::Key, scanCode, 72);
|
|
CHECK_OFFSET(InputMessage::Body::Key, metaState, 76);
|
|
CHECK_OFFSET(InputMessage::Body::Key, repeatCount, 80);
|
|
CHECK_OFFSET(InputMessage::Body::Key, downTime, 88);
|
|
|
|
CHECK_OFFSET(InputMessage::Body::Motion, seq, 0);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, eventId, 4);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, eventTime, 8);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, deviceId, 16);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, source, 20);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, displayId, 24);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, hmac, 28);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, action, 60);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, actionButton, 64);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, flags, 68);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, metaState, 72);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, buttonState, 76);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, classification, 80);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, edgeFlags, 84);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, downTime, 88);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, xScale, 96);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, yScale, 100);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, xOffset, 104);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, yOffset, 108);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, xPrecision, 112);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, yPrecision, 116);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, xCursorPosition, 120);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, yCursorPosition, 124);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, pointerCount, 128);
|
|
CHECK_OFFSET(InputMessage::Body::Motion, pointers, 136);
|
|
|
|
CHECK_OFFSET(InputMessage::Body::Focus, seq, 0);
|
|
CHECK_OFFSET(InputMessage::Body::Focus, eventId, 4);
|
|
CHECK_OFFSET(InputMessage::Body::Focus, hasFocus, 12);
|
|
CHECK_OFFSET(InputMessage::Body::Focus, inTouchMode, 14);
|
|
|
|
CHECK_OFFSET(InputMessage::Body::Finished, seq, 0);
|
|
CHECK_OFFSET(InputMessage::Body::Finished, handled, 4);
|
|
}
|
|
|
|
void TestHeaderSize() {
|
|
static_assert(sizeof(InputMessage::Header) == 8);
|
|
}
|
|
|
|
/**
|
|
* We cannot use the Body::size() method here because it is not static for
|
|
* the Motion type, where "pointerCount" variable affects the size and can change at runtime.
|
|
*/
|
|
void TestBodySize() {
|
|
static_assert(sizeof(InputMessage::Body::Key) == 96);
|
|
static_assert(sizeof(InputMessage::Body::Motion) ==
|
|
offsetof(InputMessage::Body::Motion, pointers) +
|
|
sizeof(InputMessage::Body::Motion::Pointer) * MAX_POINTERS);
|
|
static_assert(sizeof(InputMessage::Body::Finished) == 8);
|
|
static_assert(sizeof(InputMessage::Body::Focus) == 16);
|
|
}
|
|
|
|
// --- VerifiedInputEvent ---
|
|
// Ensure that VerifiedInputEvent, VerifiedKeyEvent, VerifiedMotionEvent are packed.
|
|
// We will treat them as byte collections when signing them. There should not be any uninitialized
|
|
// data in-between fields. Otherwise, the padded data will affect the hmac value and verifications
|
|
// will fail.
|
|
|
|
void TestVerifiedEventSize() {
|
|
// VerifiedInputEvent
|
|
constexpr size_t VERIFIED_INPUT_EVENT_SIZE = sizeof(VerifiedInputEvent::type) +
|
|
sizeof(VerifiedInputEvent::deviceId) + sizeof(VerifiedInputEvent::eventTimeNanos) +
|
|
sizeof(VerifiedInputEvent::source) + sizeof(VerifiedInputEvent::displayId);
|
|
static_assert(sizeof(VerifiedInputEvent) == VERIFIED_INPUT_EVENT_SIZE);
|
|
|
|
// VerifiedKeyEvent
|
|
constexpr size_t VERIFIED_KEY_EVENT_SIZE = VERIFIED_INPUT_EVENT_SIZE +
|
|
sizeof(VerifiedKeyEvent::action) + sizeof(VerifiedKeyEvent::downTimeNanos) +
|
|
sizeof(VerifiedKeyEvent::flags) + sizeof(VerifiedKeyEvent::keyCode) +
|
|
sizeof(VerifiedKeyEvent::scanCode) + sizeof(VerifiedKeyEvent::metaState) +
|
|
sizeof(VerifiedKeyEvent::repeatCount);
|
|
static_assert(sizeof(VerifiedKeyEvent) == VERIFIED_KEY_EVENT_SIZE);
|
|
|
|
// VerifiedMotionEvent
|
|
constexpr size_t VERIFIED_MOTION_EVENT_SIZE = VERIFIED_INPUT_EVENT_SIZE +
|
|
sizeof(VerifiedMotionEvent::rawX) + sizeof(VerifiedMotionEvent::rawY) +
|
|
sizeof(VerifiedMotionEvent::actionMasked) + sizeof(VerifiedMotionEvent::downTimeNanos) +
|
|
sizeof(VerifiedMotionEvent::flags) + sizeof(VerifiedMotionEvent::metaState) +
|
|
sizeof(VerifiedMotionEvent::buttonState);
|
|
static_assert(sizeof(VerifiedMotionEvent) == VERIFIED_MOTION_EVENT_SIZE);
|
|
}
|
|
|
|
} // namespace android
|