03a53d1c77
Due to more complex window layouts resulting in lots of overlapping windows, the policy around FLAG_WINDOW_IS_OBSCURED has changed to only be set when the point at which the window was touched is obscured. Unfortunately, this doesn't prevent tapjacking attacks that overlay the dialog's text, making a potentially dangerous operation seem innocuous. To avoid this on particularly sensitive dialogs, introduce a new flag that really does tell you when your window is being even partially overlapped. We aren't exposing this as API since we plan on making the original flag more robust. This is really a workaround for system dialogs since we generally know their layout and screen position, and that they're unlikely to be overlapped by other applications. Bug: 26677796 Change-Id: I9e336afe90f262ba22015876769a9c510048fd47
80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
/*
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* Copyright (C) 2011 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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#define LOG_TAG "InputWindow"
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#define LOG_NDEBUG 0
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#include "InputWindow.h"
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#include <cutils/log.h>
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#include <ui/Rect.h>
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#include <ui/Region.h>
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namespace android {
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// --- InputWindowInfo ---
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void InputWindowInfo::addTouchableRegion(const Rect& region) {
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touchableRegion.orSelf(region);
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}
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bool InputWindowInfo::touchableRegionContainsPoint(int32_t x, int32_t y) const {
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return touchableRegion.contains(x,y);
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}
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bool InputWindowInfo::frameContainsPoint(int32_t x, int32_t y) const {
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return x >= frameLeft && x < frameRight
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&& y >= frameTop && y < frameBottom;
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}
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bool InputWindowInfo::isTrustedOverlay() const {
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return layoutParamsType == TYPE_INPUT_METHOD
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|| layoutParamsType == TYPE_INPUT_METHOD_DIALOG
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|| layoutParamsType == TYPE_MAGNIFICATION_OVERLAY
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|| layoutParamsType == TYPE_STATUS_BAR
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|| layoutParamsType == TYPE_NAVIGATION_BAR
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|| layoutParamsType == TYPE_SECURE_SYSTEM_OVERLAY;
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}
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bool InputWindowInfo::supportsSplitTouch() const {
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return layoutParamsFlags & FLAG_SPLIT_TOUCH;
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}
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bool InputWindowInfo::overlaps(const InputWindowInfo* other) const {
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return frameLeft < other->frameRight && frameRight > other->frameLeft
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&& frameTop < other->frameBottom && frameBottom > other->frameTop;
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}
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// --- InputWindowHandle ---
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InputWindowHandle::InputWindowHandle(const sp<InputApplicationHandle>& inputApplicationHandle) :
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inputApplicationHandle(inputApplicationHandle), mInfo(NULL) {
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}
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InputWindowHandle::~InputWindowHandle() {
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delete mInfo;
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}
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void InputWindowHandle::releaseInfo() {
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if (mInfo) {
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delete mInfo;
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mInfo = NULL;
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}
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}
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} // namespace android
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