Adding feature: input device disable/enable
This functionality will only be available for signed system
services. A disable call will cause a file descriptor to the input
device driver to be closed, which in turn may cause the input
device to switch into a low-power mode. An enable call will
reopen the input device.
Bug: 30143923
Test: CTS test - android.view.cts.InputDeviceEnabledTest
Native test - WhenEnabledChanges_SendsDeviceResetNotification,
WhenDeviceCreated_EnabledIsTrue. Also developed a custom apk
with signature permission that calls disable/enable on a
touchscreen device. Verified that touchscreen stops working
when disable is called and starts working again when
enable is called. Verified that the file
handle to the driver is closed and reopened. Verified that
the notification onInputDeviceChanged is received in the
app.
Change-Id: I99a7866cebff873dc1848e11a39045ed2eaec07c
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index 2e0bcd1..7082fe1 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -16,6 +16,7 @@
#include "../InputReader.h"
+#include <inttypes.h>
#include <utils/List.h>
#include <gtest/gtest.h>
#include <math.h>
@@ -161,6 +162,22 @@
mConfig.excludedDeviceNames.push(deviceName);
}
+ void addDisabledDevice(int32_t deviceId) {
+ ssize_t index = mConfig.disabledDevices.indexOf(deviceId);
+ bool currentlyEnabled = index < 0;
+ if (currentlyEnabled) {
+ mConfig.disabledDevices.add(deviceId);
+ }
+ }
+
+ void removeDisabledDevice(int32_t deviceId) {
+ ssize_t index = mConfig.disabledDevices.indexOf(deviceId);
+ bool currentlyEnabled = index < 0;
+ if (!currentlyEnabled) {
+ mConfig.disabledDevices.remove(deviceId);
+ }
+ }
+
void setPointerController(int32_t deviceId, const sp<FakePointerController>& controller) {
mPointerControllers.add(deviceId, controller);
}
@@ -236,6 +253,11 @@
mNotifyConfigurationChangedArgsQueue.erase(mNotifyConfigurationChangedArgsQueue.begin());
}
+ void assertNotifyConfigurationChangedWasNotCalled() {
+ ASSERT_TRUE(mNotifyConfigurationChangedArgsQueue.empty())
+ << "Expected notifyConfigurationChanged() to not have been called.";
+ }
+
void assertNotifyDeviceResetWasCalled(
NotifyDeviceResetArgs* outEventArgs = NULL) {
ASSERT_FALSE(mNotifyDeviceResetArgsQueue.empty())
@@ -246,6 +268,11 @@
mNotifyDeviceResetArgsQueue.erase(mNotifyDeviceResetArgsQueue.begin());
}
+ void assertNotifyDeviceResetWasNotCalled() {
+ ASSERT_TRUE(mNotifyDeviceResetArgsQueue.empty())
+ << "Expected notifyDeviceReset() to not have been called.";
+ }
+
void assertNotifyKeyWasCalled(NotifyKeyArgs* outEventArgs = NULL) {
ASSERT_FALSE(mNotifyKeyArgsQueue.empty())
<< "Expected notifyKey() to have been called.";
@@ -328,9 +355,20 @@
KeyedVector<int32_t, KeyInfo> keysByUsageCode;
KeyedVector<int32_t, bool> leds;
Vector<VirtualKeyDefinition> virtualKeys;
+ bool enabled;
+
+ status_t enable() {
+ enabled = true;
+ return OK;
+ }
+
+ status_t disable() {
+ enabled = false;
+ return OK;
+ }
explicit Device(uint32_t classes) :
- classes(classes) {
+ classes(classes), enabled(true) {
}
};
@@ -363,6 +401,43 @@
enqueueEvent(ARBITRARY_TIME, deviceId, EventHubInterface::DEVICE_REMOVED, 0, 0);
}
+ bool isDeviceEnabled(int32_t deviceId) {
+ Device* device = getDevice(deviceId);
+ if (device == NULL) {
+ ALOGE("Incorrect device id=%" PRId32 " provided to %s", deviceId, __func__);
+ return false;
+ }
+ return device->enabled;
+ }
+
+ status_t enableDevice(int32_t deviceId) {
+ status_t result;
+ Device* device = getDevice(deviceId);
+ if (device == NULL) {
+ ALOGE("Incorrect device id=%" PRId32 " provided to %s", deviceId, __func__);
+ return BAD_VALUE;
+ }
+ if (device->enabled) {
+ ALOGW("Duplicate call to %s, device %" PRId32 " already enabled", __func__, deviceId);
+ return OK;
+ }
+ result = device->enable();
+ return result;
+ }
+
+ status_t disableDevice(int32_t deviceId) {
+ Device* device = getDevice(deviceId);
+ if (device == NULL) {
+ ALOGE("Incorrect device id=%" PRId32 " provided to %s", deviceId, __func__);
+ return BAD_VALUE;
+ }
+ if (!device->enabled) {
+ ALOGW("Duplicate call to %s, device %" PRId32 " already disabled", __func__, deviceId);
+ return OK;
+ }
+ return device->disable();
+ }
+
void finishDeviceScan() {
enqueueEvent(ARBITRARY_TIME, 0, EventHubInterface::FINISHED_DEVICE_SCAN, 0, 0);
}
@@ -1020,6 +1095,20 @@
mFakeEventHub->assertQueueIsEmpty();
}
+ void disableDevice(int32_t deviceId, InputDevice* device) {
+ mFakePolicy->addDisabledDevice(deviceId);
+ configureDevice(InputReaderConfiguration::CHANGE_ENABLED_STATE, device);
+ }
+
+ void enableDevice(int32_t deviceId, InputDevice* device) {
+ mFakePolicy->removeDisabledDevice(deviceId);
+ configureDevice(InputReaderConfiguration::CHANGE_ENABLED_STATE, device);
+ }
+
+ void configureDevice(uint32_t changes, InputDevice* device) {
+ device->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(), changes);
+ }
+
FakeInputMapper* addDeviceWithFakeInputMapper(int32_t deviceId, int32_t controllerNumber,
const String8& name, uint32_t classes, uint32_t sources,
const PropertyMap* configuration) {
@@ -1058,6 +1147,46 @@
ASSERT_EQ(size_t(0), inputDevices[0].getMotionRanges().size());
}
+TEST_F(InputReaderTest, WhenEnabledChanges_SendsDeviceResetNotification) {
+ constexpr int32_t deviceId = 1;
+ constexpr uint32_t deviceClass = INPUT_DEVICE_CLASS_KEYBOARD;
+ InputDevice* device = mReader->newDevice(deviceId, 0, String8("fake"), deviceClass);
+ // Must add at least one mapper or the device will be ignored!
+ FakeInputMapper* mapper = new FakeInputMapper(device, AINPUT_SOURCE_KEYBOARD);
+ device->addMapper(mapper);
+ mReader->setNextDevice(device);
+ addDevice(deviceId, String8("fake"), deviceClass, NULL);
+
+ ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyConfigurationChangedWasCalled(NULL));
+
+ NotifyDeviceResetArgs resetArgs;
+ ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
+ ASSERT_EQ(ARBITRARY_TIME, resetArgs.eventTime);
+ ASSERT_EQ(deviceId, resetArgs.deviceId);
+
+ ASSERT_EQ(device->isEnabled(), true);
+ disableDevice(deviceId, device);
+ mReader->loopOnce();
+
+ mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs);
+ ASSERT_EQ(ARBITRARY_TIME, resetArgs.eventTime);
+ ASSERT_EQ(deviceId, resetArgs.deviceId);
+ ASSERT_EQ(device->isEnabled(), false);
+
+ disableDevice(deviceId, device);
+ mReader->loopOnce();
+ mFakeListener->assertNotifyDeviceResetWasNotCalled();
+ mFakeListener->assertNotifyConfigurationChangedWasNotCalled();
+ ASSERT_EQ(device->isEnabled(), false);
+
+ enableDevice(deviceId, device);
+ mReader->loopOnce();
+ mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs);
+ ASSERT_EQ(ARBITRARY_TIME, resetArgs.eventTime);
+ ASSERT_EQ(deviceId, resetArgs.deviceId);
+ ASSERT_EQ(device->isEnabled(), true);
+}
+
TEST_F(InputReaderTest, GetKeyCodeState_ForwardsRequestsToMappers) {
FakeInputMapper* mapper = NULL;
ASSERT_NO_FATAL_FAILURE(mapper = addDeviceWithFakeInputMapper(1, 0, String8("fake"),
@@ -1255,6 +1384,10 @@
ASSERT_EQ(DEVICE_CLASSES, mDevice->getClasses());
}
+TEST_F(InputDeviceTest, WhenDeviceCreated_EnabledIsTrue) {
+ ASSERT_EQ(mDevice->isEnabled(), true);
+}
+
TEST_F(InputDeviceTest, WhenNoMappersAreRegistered_DeviceIsIgnored) {
// Configuration.
InputReaderConfiguration config;