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-rw-r--r--libs/gui/WindowInfo.cpp10
-rw-r--r--libs/gui/fuzzer/libgui_surfaceComposerClient_fuzzer.cpp2
-rw-r--r--libs/gui/include/gui/Uid.h41
-rw-r--r--libs/gui/include/gui/WindowInfo.h4
-rw-r--r--libs/gui/tests/EndToEndNativeInputTest.cpp22
-rw-r--r--libs/gui/tests/WindowInfo_test.cpp2
6 files changed, 63 insertions, 18 deletions
diff --git a/libs/gui/WindowInfo.cpp b/libs/gui/WindowInfo.cpp
index 6df9ff1664..cd9b424e13 100644
--- a/libs/gui/WindowInfo.cpp
+++ b/libs/gui/WindowInfo.cpp
@@ -90,8 +90,9 @@ status_t WindowInfo::writeToParcel(android::Parcel* parcel) const {
}
parcel->writeInt32(1);
- // Ensure that the size of the flags that we use is 32 bits for writing into the parcel.
+ // Ensure that the size of custom types are what we expect for writing into the parcel.
static_assert(sizeof(inputConfig) == 4u);
+ static_assert(sizeof(ownerUid.val()) == 4u);
// clang-format off
status_t status = parcel->writeStrongBinder(token) ?:
@@ -116,7 +117,7 @@ status_t WindowInfo::writeToParcel(android::Parcel* parcel) const {
parcel->writeFloat(transform.ty()) ?:
parcel->writeInt32(static_cast<int32_t>(touchOcclusionMode)) ?:
parcel->writeInt32(ownerPid) ?:
- parcel->writeInt32(ownerUid) ?:
+ parcel->writeInt32(ownerUid.val()) ?:
parcel->writeUtf8AsUtf16(packageName) ?:
parcel->writeInt32(inputConfig.get()) ?:
parcel->writeInt32(displayId) ?:
@@ -147,7 +148,7 @@ status_t WindowInfo::readFromParcel(const android::Parcel* parcel) {
}
float dsdx, dtdx, tx, dtdy, dsdy, ty;
- int32_t lpFlags, lpType, touchOcclusionModeInt, inputConfigInt;
+ int32_t lpFlags, lpType, touchOcclusionModeInt, inputConfigInt, ownerUidInt;
sp<IBinder> touchableRegionCropHandleSp;
// clang-format off
@@ -168,7 +169,7 @@ status_t WindowInfo::readFromParcel(const android::Parcel* parcel) {
parcel->readFloat(&ty) ?:
parcel->readInt32(&touchOcclusionModeInt) ?:
parcel->readInt32(&ownerPid) ?:
- parcel->readInt32(&ownerUid) ?:
+ parcel->readInt32(&ownerUidInt) ?:
parcel->readUtf8FromUtf16(&packageName) ?:
parcel->readInt32(&inputConfigInt) ?:
parcel->readInt32(&displayId) ?:
@@ -190,6 +191,7 @@ status_t WindowInfo::readFromParcel(const android::Parcel* parcel) {
transform.set({dsdx, dtdx, tx, dtdy, dsdy, ty, 0, 0, 1});
touchOcclusionMode = static_cast<TouchOcclusionMode>(touchOcclusionModeInt);
inputConfig = ftl::Flags<InputConfig>(inputConfigInt);
+ ownerUid = Uid{static_cast<uid_t>(ownerUidInt)};
touchableRegionCropHandle = touchableRegionCropHandleSp;
return OK;
diff --git a/libs/gui/fuzzer/libgui_surfaceComposerClient_fuzzer.cpp b/libs/gui/fuzzer/libgui_surfaceComposerClient_fuzzer.cpp
index 57720dd513..7268e6483a 100644
--- a/libs/gui/fuzzer/libgui_surfaceComposerClient_fuzzer.cpp
+++ b/libs/gui/fuzzer/libgui_surfaceComposerClient_fuzzer.cpp
@@ -187,7 +187,7 @@ void SurfaceComposerClientFuzzer::getWindowInfo(gui::WindowInfo* windowInfo) {
windowInfo->replaceTouchableRegionWithCrop = mFdp.ConsumeBool();
windowInfo->touchOcclusionMode = mFdp.PickValueInArray(kMode);
windowInfo->ownerPid = mFdp.ConsumeIntegral<int32_t>();
- windowInfo->ownerUid = mFdp.ConsumeIntegral<int32_t>();
+ windowInfo->ownerUid = gui::Uid{mFdp.ConsumeIntegral<uid_t>()};
windowInfo->packageName = mFdp.ConsumeRandomLengthString(kRandomStringMaxBytes);
windowInfo->inputConfig = mFdp.PickValueInArray(kFeatures);
}
diff --git a/libs/gui/include/gui/Uid.h b/libs/gui/include/gui/Uid.h
new file mode 100644
index 0000000000..8e45ef53da
--- /dev/null
+++ b/libs/gui/include/gui/Uid.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2023 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.
+ */
+
+#pragma once
+
+#include <ftl/mixins.h>
+#include <sys/types.h>
+#include <string>
+
+namespace android::gui {
+
+// Type-safe wrapper for a UID.
+// We treat the unsigned equivalent of -1 as a singular invalid value.
+struct Uid : ftl::Constructible<Uid, uid_t>, ftl::Equatable<Uid>, ftl::Orderable<Uid> {
+ using Constructible::Constructible;
+
+ const static Uid INVALID;
+
+ constexpr auto val() const { return ftl::to_underlying(*this); }
+
+ constexpr bool isValid() const { return val() != static_cast<uid_t>(-1); }
+
+ std::string toString() const { return std::to_string(val()); }
+};
+
+const inline Uid Uid::INVALID{static_cast<uid_t>(-1)};
+
+} // namespace android::gui
diff --git a/libs/gui/include/gui/WindowInfo.h b/libs/gui/include/gui/WindowInfo.h
index 70b2ee8e32..666101eace 100644
--- a/libs/gui/include/gui/WindowInfo.h
+++ b/libs/gui/include/gui/WindowInfo.h
@@ -21,6 +21,8 @@
#include <binder/Parcel.h>
#include <binder/Parcelable.h>
#include <ftl/flags.h>
+#include <ftl/mixins.h>
+#include <gui/Uid.h>
#include <gui/constants.h>
#include <ui/Rect.h>
#include <ui/Region.h>
@@ -224,7 +226,7 @@ struct WindowInfo : public Parcelable {
TouchOcclusionMode touchOcclusionMode = TouchOcclusionMode::BLOCK_UNTRUSTED;
int32_t ownerPid = -1;
- int32_t ownerUid = -1;
+ Uid ownerUid = Uid::INVALID;
std::string packageName;
ftl::Flags<InputConfig> inputConfig;
int32_t displayId = ADISPLAY_ID_NONE;
diff --git a/libs/gui/tests/EndToEndNativeInputTest.cpp b/libs/gui/tests/EndToEndNativeInputTest.cpp
index 4ec7a06cb8..4d5bd5b3fa 100644
--- a/libs/gui/tests/EndToEndNativeInputTest.cpp
+++ b/libs/gui/tests/EndToEndNativeInputTest.cpp
@@ -821,7 +821,7 @@ TEST_F(InputSurfacesTest, touch_flag_obscured) {
// with flag AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED
std::unique_ptr<InputSurface> nonTouchableSurface = makeSurface(100, 100);
nonTouchableSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
- nonTouchableSurface->mInputInfo.ownerUid = 22222;
+ nonTouchableSurface->mInputInfo.ownerUid = gui::Uid{22222};
// Overriding occlusion mode otherwise the touch would be discarded at InputDispatcher by
// the default obscured/untrusted touch filter introduced in S.
nonTouchableSurface->mInputInfo.touchOcclusionMode = TouchOcclusionMode::ALLOW;
@@ -842,8 +842,8 @@ TEST_F(InputSurfacesTest, touch_flag_partially_obscured_with_crop) {
std::unique_ptr<InputSurface> nonTouchableSurface = makeSurface(100, 100);
nonTouchableSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
parentSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
- nonTouchableSurface->mInputInfo.ownerUid = 22222;
- parentSurface->mInputInfo.ownerUid = 22222;
+ nonTouchableSurface->mInputInfo.ownerUid = gui::Uid{22222};
+ parentSurface->mInputInfo.ownerUid = gui::Uid{22222};
nonTouchableSurface->showAt(0, 0);
parentSurface->showAt(100, 100);
@@ -866,8 +866,8 @@ TEST_F(InputSurfacesTest, touch_not_obscured_with_crop) {
std::unique_ptr<InputSurface> nonTouchableSurface = makeSurface(100, 100);
nonTouchableSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
parentSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
- nonTouchableSurface->mInputInfo.ownerUid = 22222;
- parentSurface->mInputInfo.ownerUid = 22222;
+ nonTouchableSurface->mInputInfo.ownerUid = gui::Uid{22222};
+ parentSurface->mInputInfo.ownerUid = gui::Uid{22222};
nonTouchableSurface->showAt(0, 0);
parentSurface->showAt(50, 50);
@@ -886,7 +886,7 @@ TEST_F(InputSurfacesTest, touch_not_obscured_with_zero_sized_bql) {
std::unique_ptr<InputSurface> bufferSurface =
InputSurface::makeBufferInputSurface(mComposerClient, 0, 0);
bufferSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
- bufferSurface->mInputInfo.ownerUid = 22222;
+ bufferSurface->mInputInfo.ownerUid = gui::Uid{22222};
surface->showAt(10, 10);
bufferSurface->showAt(50, 50, Rect::EMPTY_RECT);
@@ -901,7 +901,7 @@ TEST_F(InputSurfacesTest, touch_not_obscured_with_zero_sized_blast) {
std::unique_ptr<BlastInputSurface> bufferSurface =
BlastInputSurface::makeBlastInputSurface(mComposerClient, 0, 0);
bufferSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
- bufferSurface->mInputInfo.ownerUid = 22222;
+ bufferSurface->mInputInfo.ownerUid = gui::Uid{22222};
surface->showAt(10, 10);
bufferSurface->showAt(50, 50, Rect::EMPTY_RECT);
@@ -948,13 +948,13 @@ TEST_F(InputSurfacesTest, strict_unobscured_input_scaled_without_crop_window) {
TEST_F(InputSurfacesTest, strict_unobscured_input_obscured_window) {
std::unique_ptr<InputSurface> surface = makeSurface(100, 100);
- surface->mInputInfo.ownerUid = 11111;
+ surface->mInputInfo.ownerUid = gui::Uid{11111};
surface->doTransaction(
[&](auto &t, auto &sc) { t.setDropInputMode(sc, gui::DropInputMode::OBSCURED); });
surface->showAt(100, 100);
std::unique_ptr<InputSurface> obscuringSurface = makeSurface(100, 100);
obscuringSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
- obscuringSurface->mInputInfo.ownerUid = 22222;
+ obscuringSurface->mInputInfo.ownerUid = gui::Uid{22222};
obscuringSurface->showAt(100, 100);
injectTap(101, 101);
EXPECT_EQ(surface->consumeEvent(100), nullptr);
@@ -967,13 +967,13 @@ TEST_F(InputSurfacesTest, strict_unobscured_input_obscured_window) {
TEST_F(InputSurfacesTest, strict_unobscured_input_partially_obscured_window) {
std::unique_ptr<InputSurface> surface = makeSurface(100, 100);
- surface->mInputInfo.ownerUid = 11111;
+ surface->mInputInfo.ownerUid = gui::Uid{11111};
surface->doTransaction(
[&](auto &t, auto &sc) { t.setDropInputMode(sc, gui::DropInputMode::OBSCURED); });
surface->showAt(100, 100);
std::unique_ptr<InputSurface> obscuringSurface = makeSurface(100, 100);
obscuringSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
- obscuringSurface->mInputInfo.ownerUid = 22222;
+ obscuringSurface->mInputInfo.ownerUid = gui::Uid{22222};
obscuringSurface->showAt(190, 190);
injectTap(101, 101);
diff --git a/libs/gui/tests/WindowInfo_test.cpp b/libs/gui/tests/WindowInfo_test.cpp
index 11b87efda7..e3a629e1cb 100644
--- a/libs/gui/tests/WindowInfo_test.cpp
+++ b/libs/gui/tests/WindowInfo_test.cpp
@@ -62,7 +62,7 @@ TEST(WindowInfo, Parcelling) {
i.transform.set({0.4, -1, 100, 0.5, 0, 40, 0, 0, 1});
i.touchOcclusionMode = TouchOcclusionMode::ALLOW;
i.ownerPid = 19;
- i.ownerUid = 24;
+ i.ownerUid = gui::Uid{24};
i.packageName = "com.example.package";
i.inputConfig = WindowInfo::InputConfig::NOT_FOCUSABLE;
i.displayId = 34;
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-11-02 12:59:46 +0000