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162 lines
7.2 KiB
162 lines
7.2 KiB
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <input/InputTransport.h>
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#include <input/Input.h>
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namespace android {
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#define CHECK_OFFSET(type, member, expected_offset) \
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static_assert((offsetof(type, member) == (expected_offset)), "")
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struct Foo {
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uint32_t dummy;
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PointerCoords coords;
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};
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void TestPointerCoordsAlignment() {
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CHECK_OFFSET(Foo, coords, 8);
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}
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void TestInputMessageAlignment() {
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CHECK_OFFSET(InputMessage, body, 8);
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CHECK_OFFSET(InputMessage::Body::Key, eventId, 0);
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CHECK_OFFSET(InputMessage::Body::Key, eventTime, 8);
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CHECK_OFFSET(InputMessage::Body::Key, deviceId, 16);
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CHECK_OFFSET(InputMessage::Body::Key, source, 20);
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CHECK_OFFSET(InputMessage::Body::Key, displayId, 24);
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CHECK_OFFSET(InputMessage::Body::Key, hmac, 28);
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CHECK_OFFSET(InputMessage::Body::Key, action, 60);
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CHECK_OFFSET(InputMessage::Body::Key, flags, 64);
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CHECK_OFFSET(InputMessage::Body::Key, keyCode, 68);
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CHECK_OFFSET(InputMessage::Body::Key, scanCode, 72);
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CHECK_OFFSET(InputMessage::Body::Key, metaState, 76);
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CHECK_OFFSET(InputMessage::Body::Key, repeatCount, 80);
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CHECK_OFFSET(InputMessage::Body::Key, downTime, 88);
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CHECK_OFFSET(InputMessage::Body::Motion, eventId, 0);
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CHECK_OFFSET(InputMessage::Body::Motion, empty1, 4);
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CHECK_OFFSET(InputMessage::Body::Motion, eventTime, 8);
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CHECK_OFFSET(InputMessage::Body::Motion, deviceId, 16);
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CHECK_OFFSET(InputMessage::Body::Motion, source, 20);
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CHECK_OFFSET(InputMessage::Body::Motion, displayId, 24);
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CHECK_OFFSET(InputMessage::Body::Motion, hmac, 28);
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CHECK_OFFSET(InputMessage::Body::Motion, action, 60);
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CHECK_OFFSET(InputMessage::Body::Motion, actionButton, 64);
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CHECK_OFFSET(InputMessage::Body::Motion, flags, 68);
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CHECK_OFFSET(InputMessage::Body::Motion, metaState, 72);
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CHECK_OFFSET(InputMessage::Body::Motion, buttonState, 76);
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CHECK_OFFSET(InputMessage::Body::Motion, classification, 80);
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CHECK_OFFSET(InputMessage::Body::Motion, empty2, 81);
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CHECK_OFFSET(InputMessage::Body::Motion, edgeFlags, 84);
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CHECK_OFFSET(InputMessage::Body::Motion, downTime, 88);
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CHECK_OFFSET(InputMessage::Body::Motion, dsdx, 96);
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CHECK_OFFSET(InputMessage::Body::Motion, dtdx, 100);
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CHECK_OFFSET(InputMessage::Body::Motion, dtdy, 104);
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CHECK_OFFSET(InputMessage::Body::Motion, dsdy, 108);
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CHECK_OFFSET(InputMessage::Body::Motion, tx, 112);
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CHECK_OFFSET(InputMessage::Body::Motion, ty, 116);
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CHECK_OFFSET(InputMessage::Body::Motion, xPrecision, 120);
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CHECK_OFFSET(InputMessage::Body::Motion, yPrecision, 124);
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CHECK_OFFSET(InputMessage::Body::Motion, xCursorPosition, 128);
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CHECK_OFFSET(InputMessage::Body::Motion, yCursorPosition, 132);
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CHECK_OFFSET(InputMessage::Body::Motion, displayWidth, 136);
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CHECK_OFFSET(InputMessage::Body::Motion, displayHeight, 140);
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CHECK_OFFSET(InputMessage::Body::Motion, pointerCount, 144);
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CHECK_OFFSET(InputMessage::Body::Motion, empty3, 148);
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CHECK_OFFSET(InputMessage::Body::Motion, pointers, 152);
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CHECK_OFFSET(InputMessage::Body::Focus, eventId, 0);
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CHECK_OFFSET(InputMessage::Body::Focus, hasFocus, 4);
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CHECK_OFFSET(InputMessage::Body::Focus, inTouchMode, 5);
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CHECK_OFFSET(InputMessage::Body::Focus, empty, 6);
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CHECK_OFFSET(InputMessage::Body::Capture, eventId, 0);
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CHECK_OFFSET(InputMessage::Body::Capture, pointerCaptureEnabled, 4);
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CHECK_OFFSET(InputMessage::Body::Capture, empty, 5);
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CHECK_OFFSET(InputMessage::Body::Drag, eventId, 0);
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CHECK_OFFSET(InputMessage::Body::Drag, x, 4);
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CHECK_OFFSET(InputMessage::Body::Drag, y, 8);
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CHECK_OFFSET(InputMessage::Body::Drag, isExiting, 12);
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CHECK_OFFSET(InputMessage::Body::Drag, empty, 13);
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CHECK_OFFSET(InputMessage::Body::Finished, handled, 0);
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CHECK_OFFSET(InputMessage::Body::Finished, empty, 1);
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CHECK_OFFSET(InputMessage::Body::Finished, consumeTime, 8);
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CHECK_OFFSET(InputMessage::Body::Timeline, eventId, 0);
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CHECK_OFFSET(InputMessage::Body::Timeline, empty, 4);
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CHECK_OFFSET(InputMessage::Body::Timeline, graphicsTimeline, 8);
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}
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void TestHeaderSize() {
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CHECK_OFFSET(InputMessage::Header, type, 0);
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CHECK_OFFSET(InputMessage::Header, seq, 4);
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static_assert(sizeof(InputMessage::Header) == 8);
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}
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/**
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* We cannot use the Body::size() method here because it is not static for
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* the Motion type, where "pointerCount" variable affects the size and can change at runtime.
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*/
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void TestBodySize() {
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static_assert(sizeof(InputMessage::Body::Key) == 96);
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static_assert(sizeof(InputMessage::Body::Motion) ==
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offsetof(InputMessage::Body::Motion, pointers) +
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sizeof(InputMessage::Body::Motion::Pointer) * MAX_POINTERS);
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static_assert(sizeof(InputMessage::Body::Finished) == 16);
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static_assert(sizeof(InputMessage::Body::Focus) == 8);
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static_assert(sizeof(InputMessage::Body::Capture) == 8);
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static_assert(sizeof(InputMessage::Body::Drag) == 16);
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// Timeline
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static_assert(GraphicsTimeline::SIZE == 2);
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static_assert(sizeof(InputMessage::Body::Timeline) == 24);
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}
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// --- VerifiedInputEvent ---
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// Ensure that VerifiedInputEvent, VerifiedKeyEvent, VerifiedMotionEvent are packed.
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// We will treat them as byte collections when signing them. There should not be any uninitialized
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// data in-between fields. Otherwise, the padded data will affect the hmac value and verifications
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// will fail.
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void TestVerifiedEventSize() {
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// VerifiedInputEvent
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constexpr size_t VERIFIED_INPUT_EVENT_SIZE = sizeof(VerifiedInputEvent::type) +
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sizeof(VerifiedInputEvent::deviceId) + sizeof(VerifiedInputEvent::eventTimeNanos) +
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sizeof(VerifiedInputEvent::source) + sizeof(VerifiedInputEvent::displayId);
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static_assert(sizeof(VerifiedInputEvent) == VERIFIED_INPUT_EVENT_SIZE);
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// VerifiedKeyEvent
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constexpr size_t VERIFIED_KEY_EVENT_SIZE = VERIFIED_INPUT_EVENT_SIZE +
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sizeof(VerifiedKeyEvent::action) + sizeof(VerifiedKeyEvent::downTimeNanos) +
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sizeof(VerifiedKeyEvent::flags) + sizeof(VerifiedKeyEvent::keyCode) +
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sizeof(VerifiedKeyEvent::scanCode) + sizeof(VerifiedKeyEvent::metaState) +
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sizeof(VerifiedKeyEvent::repeatCount);
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static_assert(sizeof(VerifiedKeyEvent) == VERIFIED_KEY_EVENT_SIZE);
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// VerifiedMotionEvent
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constexpr size_t VERIFIED_MOTION_EVENT_SIZE = VERIFIED_INPUT_EVENT_SIZE +
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sizeof(VerifiedMotionEvent::rawX) + sizeof(VerifiedMotionEvent::rawY) +
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sizeof(VerifiedMotionEvent::actionMasked) + sizeof(VerifiedMotionEvent::downTimeNanos) +
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sizeof(VerifiedMotionEvent::flags) + sizeof(VerifiedMotionEvent::metaState) +
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sizeof(VerifiedMotionEvent::buttonState);
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static_assert(sizeof(VerifiedMotionEvent) == VERIFIED_MOTION_EVENT_SIZE);
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}
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} // namespace android
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