InputDispatcher_test.cpp revision dc5992e48ca88d882313d206f8174efcc5e01455 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "../InputDispatcher.h"
18
19#include <gtest/gtest.h>
20#include <linux/input.h>
21
22namespace android {
23
24// An arbitrary time value.
25static const nsecs_t ARBITRARY_TIME = 1234;
26
27// An arbitrary device id.
28static const int32_t DEVICE_ID = 1;
29
30// An arbitrary display id.
31static const int32_t DISPLAY_ID = 0;
32
33// An arbitrary injector pid / uid pair that has permission to inject events.
34static const int32_t INJECTOR_PID = 999;
35static const int32_t INJECTOR_UID = 1001;
36
37
38// --- FakeInputDispatcherPolicy ---
39
40class FakeInputDispatcherPolicy : public InputDispatcherPolicyInterface {
41    InputDispatcherConfiguration mConfig;
42
43protected:
44    virtual ~FakeInputDispatcherPolicy() {
45    }
46
47public:
48    FakeInputDispatcherPolicy() {
49    }
50
51private:
52    virtual void notifyConfigurationChanged(nsecs_t when) {
53    }
54
55    virtual nsecs_t notifyANR(const sp<InputApplicationHandle>& inputApplicationHandle,
56            const sp<InputWindowHandle>& inputWindowHandle,
57            const String8& reason) {
58        return 0;
59    }
60
61    virtual void notifyInputChannelBroken(const sp<InputWindowHandle>& inputWindowHandle) {
62    }
63
64    virtual void getDispatcherConfiguration(InputDispatcherConfiguration* outConfig) {
65        *outConfig = mConfig;
66    }
67
68    virtual bool filterInputEvent(const InputEvent* inputEvent, uint32_t policyFlags) {
69        return true;
70    }
71
72    virtual void interceptKeyBeforeQueueing(const KeyEvent* keyEvent, uint32_t& policyFlags) {
73    }
74
75    virtual void interceptMotionBeforeQueueing(nsecs_t when, uint32_t& policyFlags) {
76    }
77
78    virtual nsecs_t interceptKeyBeforeDispatching(const sp<InputWindowHandle>& inputWindowHandle,
79            const KeyEvent* keyEvent, uint32_t policyFlags) {
80        return 0;
81    }
82
83    virtual bool dispatchUnhandledKey(const sp<InputWindowHandle>& inputWindowHandle,
84            const KeyEvent* keyEvent, uint32_t policyFlags, KeyEvent* outFallbackKeyEvent) {
85        return false;
86    }
87
88    virtual void notifySwitch(nsecs_t when,
89            uint32_t switchValues, uint32_t switchMask, uint32_t policyFlags) {
90    }
91
92    virtual void pokeUserActivity(nsecs_t eventTime, int32_t eventType) {
93    }
94
95    virtual bool checkInjectEventsPermissionNonReentrant(
96            int32_t injectorPid, int32_t injectorUid) {
97        return false;
98    }
99};
100
101
102// --- InputDispatcherTest ---
103
104class InputDispatcherTest : public testing::Test {
105protected:
106    sp<FakeInputDispatcherPolicy> mFakePolicy;
107    sp<InputDispatcher> mDispatcher;
108
109    virtual void SetUp() {
110        mFakePolicy = new FakeInputDispatcherPolicy();
111        mDispatcher = new InputDispatcher(mFakePolicy);
112    }
113
114    virtual void TearDown() {
115        mFakePolicy.clear();
116        mDispatcher.clear();
117    }
118};
119
120
121TEST_F(InputDispatcherTest, InjectInputEvent_ValidatesKeyEvents) {
122    KeyEvent event;
123
124    // Rejects undefined key actions.
125    event.initialize(DEVICE_ID, AINPUT_SOURCE_KEYBOARD,
126            /*action*/ -1, 0,
127            AKEYCODE_A, KEY_A, AMETA_NONE, 0, ARBITRARY_TIME, ARBITRARY_TIME);
128    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
129            &event, DISPLAY_ID,
130            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
131            << "Should reject key events with undefined action.";
132
133    // Rejects ACTION_MULTIPLE since it is not supported despite being defined in the API.
134    event.initialize(DEVICE_ID, AINPUT_SOURCE_KEYBOARD,
135            AKEY_EVENT_ACTION_MULTIPLE, 0,
136            AKEYCODE_A, KEY_A, AMETA_NONE, 0, ARBITRARY_TIME, ARBITRARY_TIME);
137    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
138            &event, DISPLAY_ID,
139            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
140            << "Should reject key events with ACTION_MULTIPLE.";
141}
142
143TEST_F(InputDispatcherTest, InjectInputEvent_ValidatesMotionEvents) {
144    MotionEvent event;
145    PointerProperties pointerProperties[MAX_POINTERS + 1];
146    PointerCoords pointerCoords[MAX_POINTERS + 1];
147    for (int i = 0; i <= MAX_POINTERS; i++) {
148        pointerProperties[i].clear();
149        pointerProperties[i].id = i;
150        pointerCoords[i].clear();
151    }
152
153    // Rejects undefined motion actions.
154    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
155            /*action*/ -1, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
156            ARBITRARY_TIME, ARBITRARY_TIME,
157            /*pointerCount*/ 1, pointerProperties, pointerCoords);
158    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
159            &event, DISPLAY_ID,
160            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
161            << "Should reject motion events with undefined action.";
162
163    // Rejects pointer down with invalid index.
164    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
165            AMOTION_EVENT_ACTION_POINTER_DOWN | (1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
166            0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
167            ARBITRARY_TIME, ARBITRARY_TIME,
168            /*pointerCount*/ 1, pointerProperties, pointerCoords);
169    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
170            &event, DISPLAY_ID,
171            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
172            << "Should reject motion events with pointer down index too large.";
173
174    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
175            AMOTION_EVENT_ACTION_POINTER_DOWN | (-1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
176            0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
177            ARBITRARY_TIME, ARBITRARY_TIME,
178            /*pointerCount*/ 1, pointerProperties, pointerCoords);
179    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
180            &event, DISPLAY_ID,
181            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
182            << "Should reject motion events with pointer down index too small.";
183
184    // Rejects pointer up with invalid index.
185    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
186            AMOTION_EVENT_ACTION_POINTER_UP | (1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
187            0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
188            ARBITRARY_TIME, ARBITRARY_TIME,
189            /*pointerCount*/ 1, pointerProperties, pointerCoords);
190    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
191            &event, DISPLAY_ID,
192            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
193            << "Should reject motion events with pointer up index too large.";
194
195    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
196            AMOTION_EVENT_ACTION_POINTER_UP | (-1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
197            0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
198            ARBITRARY_TIME, ARBITRARY_TIME,
199            /*pointerCount*/ 1, pointerProperties, pointerCoords);
200    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
201            &event, DISPLAY_ID,
202            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
203            << "Should reject motion events with pointer up index too small.";
204
205    // Rejects motion events with invalid number of pointers.
206    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
207            AMOTION_EVENT_ACTION_DOWN, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
208            ARBITRARY_TIME, ARBITRARY_TIME,
209            /*pointerCount*/ 0, pointerProperties, pointerCoords);
210    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
211            &event, DISPLAY_ID,
212            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
213            << "Should reject motion events with 0 pointers.";
214
215    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
216            AMOTION_EVENT_ACTION_DOWN, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
217            ARBITRARY_TIME, ARBITRARY_TIME,
218            /*pointerCount*/ MAX_POINTERS + 1, pointerProperties, pointerCoords);
219    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
220            &event, DISPLAY_ID,
221            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
222            << "Should reject motion events with more than MAX_POINTERS pointers.";
223
224    // Rejects motion events with invalid pointer ids.
225    pointerProperties[0].id = -1;
226    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
227            AMOTION_EVENT_ACTION_DOWN, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
228            ARBITRARY_TIME, ARBITRARY_TIME,
229            /*pointerCount*/ 1, pointerProperties, pointerCoords);
230    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
231            &event, DISPLAY_ID,
232            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
233            << "Should reject motion events with pointer ids less than 0.";
234
235    pointerProperties[0].id = MAX_POINTER_ID + 1;
236    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
237            AMOTION_EVENT_ACTION_DOWN, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
238            ARBITRARY_TIME, ARBITRARY_TIME,
239            /*pointerCount*/ 1, pointerProperties, pointerCoords);
240    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
241            &event, DISPLAY_ID,
242            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
243            << "Should reject motion events with pointer ids greater than MAX_POINTER_ID.";
244
245    // Rejects motion events with duplicate pointer ids.
246    pointerProperties[0].id = 1;
247    pointerProperties[1].id = 1;
248    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
249            AMOTION_EVENT_ACTION_DOWN, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
250            ARBITRARY_TIME, ARBITRARY_TIME,
251            /*pointerCount*/ 2, pointerProperties, pointerCoords);
252    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
253            &event, DISPLAY_ID,
254            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
255            << "Should reject motion events with duplicate pointer ids.";
256}
257
258} // namespace android
259