InputDispatcher_test.cpp revision f086ddbb97e59bd4a0c27745f6e6cc9832a2d4f8 
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 isKeyRepeatEnabled() {
69        return true;
70    }
71
72    virtual bool filterInputEvent(const InputEvent* inputEvent, uint32_t policyFlags) {
73        return true;
74    }
75
76    virtual void interceptKeyBeforeQueueing(const KeyEvent* keyEvent, uint32_t& policyFlags) {
77    }
78
79    virtual void interceptMotionBeforeQueueing(nsecs_t when, uint32_t& policyFlags) {
80    }
81
82    virtual nsecs_t interceptKeyBeforeDispatching(const sp<InputWindowHandle>& inputWindowHandle,
83            const KeyEvent* keyEvent, uint32_t policyFlags) {
84        return 0;
85    }
86
87    virtual bool dispatchUnhandledKey(const sp<InputWindowHandle>& inputWindowHandle,
88            const KeyEvent* keyEvent, uint32_t policyFlags, KeyEvent* outFallbackKeyEvent) {
89        return false;
90    }
91
92    virtual void notifySwitch(nsecs_t when,
93            uint32_t switchValues, uint32_t switchMask, uint32_t policyFlags) {
94    }
95
96    virtual void pokeUserActivity(nsecs_t eventTime, int32_t eventType) {
97    }
98
99    virtual bool checkInjectEventsPermissionNonReentrant(
100            int32_t injectorPid, int32_t injectorUid) {
101        return false;
102    }
103};
104
105
106// --- InputDispatcherTest ---
107
108class InputDispatcherTest : public testing::Test {
109protected:
110    sp<FakeInputDispatcherPolicy> mFakePolicy;
111    sp<InputDispatcher> mDispatcher;
112
113    virtual void SetUp() {
114        mFakePolicy = new FakeInputDispatcherPolicy();
115        mDispatcher = new InputDispatcher(mFakePolicy);
116    }
117
118    virtual void TearDown() {
119        mFakePolicy.clear();
120        mDispatcher.clear();
121    }
122};
123
124
125TEST_F(InputDispatcherTest, InjectInputEvent_ValidatesKeyEvents) {
126    KeyEvent event;
127
128    // Rejects undefined key actions.
129    event.initialize(DEVICE_ID, AINPUT_SOURCE_KEYBOARD,
130            /*action*/ -1, 0,
131            AKEYCODE_A, KEY_A, AMETA_NONE, 0, ARBITRARY_TIME, ARBITRARY_TIME);
132    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
133            &event, DISPLAY_ID,
134            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
135            << "Should reject key events with undefined action.";
136
137    // Rejects ACTION_MULTIPLE since it is not supported despite being defined in the API.
138    event.initialize(DEVICE_ID, AINPUT_SOURCE_KEYBOARD,
139            AKEY_EVENT_ACTION_MULTIPLE, 0,
140            AKEYCODE_A, KEY_A, AMETA_NONE, 0, ARBITRARY_TIME, ARBITRARY_TIME);
141    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
142            &event, DISPLAY_ID,
143            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
144            << "Should reject key events with ACTION_MULTIPLE.";
145}
146
147TEST_F(InputDispatcherTest, InjectInputEvent_ValidatesMotionEvents) {
148    MotionEvent event;
149    PointerProperties pointerProperties[MAX_POINTERS + 1];
150    PointerCoords pointerCoords[MAX_POINTERS + 1];
151    for (int i = 0; i <= MAX_POINTERS; i++) {
152        pointerProperties[i].clear();
153        pointerProperties[i].id = i;
154        pointerCoords[i].clear();
155    }
156
157    // Rejects undefined motion actions.
158    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
159            /*action*/ -1, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
160            ARBITRARY_TIME, ARBITRARY_TIME,
161            /*pointerCount*/ 1, pointerProperties, pointerCoords);
162    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
163            &event, DISPLAY_ID,
164            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
165            << "Should reject motion events with undefined action.";
166
167    // Rejects pointer down with invalid index.
168    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
169            AMOTION_EVENT_ACTION_POINTER_DOWN | (1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
170            0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
171            ARBITRARY_TIME, ARBITRARY_TIME,
172            /*pointerCount*/ 1, pointerProperties, pointerCoords);
173    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
174            &event, DISPLAY_ID,
175            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
176            << "Should reject motion events with pointer down index too large.";
177
178    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
179            AMOTION_EVENT_ACTION_POINTER_DOWN | (-1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
180            0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
181            ARBITRARY_TIME, ARBITRARY_TIME,
182            /*pointerCount*/ 1, pointerProperties, pointerCoords);
183    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
184            &event, DISPLAY_ID,
185            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
186            << "Should reject motion events with pointer down index too small.";
187
188    // Rejects pointer up with invalid index.
189    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
190            AMOTION_EVENT_ACTION_POINTER_UP | (1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
191            0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
192            ARBITRARY_TIME, ARBITRARY_TIME,
193            /*pointerCount*/ 1, pointerProperties, pointerCoords);
194    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
195            &event, DISPLAY_ID,
196            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
197            << "Should reject motion events with pointer up index too large.";
198
199    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
200            AMOTION_EVENT_ACTION_POINTER_UP | (-1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
201            0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
202            ARBITRARY_TIME, ARBITRARY_TIME,
203            /*pointerCount*/ 1, pointerProperties, pointerCoords);
204    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
205            &event, DISPLAY_ID,
206            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
207            << "Should reject motion events with pointer up index too small.";
208
209    // Rejects motion events with invalid number of pointers.
210    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
211            AMOTION_EVENT_ACTION_DOWN, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
212            ARBITRARY_TIME, ARBITRARY_TIME,
213            /*pointerCount*/ 0, pointerProperties, pointerCoords);
214    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
215            &event, DISPLAY_ID,
216            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
217            << "Should reject motion events with 0 pointers.";
218
219    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
220            AMOTION_EVENT_ACTION_DOWN, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
221            ARBITRARY_TIME, ARBITRARY_TIME,
222            /*pointerCount*/ MAX_POINTERS + 1, pointerProperties, pointerCoords);
223    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
224            &event, DISPLAY_ID,
225            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
226            << "Should reject motion events with more than MAX_POINTERS pointers.";
227
228    // Rejects motion events with invalid pointer ids.
229    pointerProperties[0].id = -1;
230    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
231            AMOTION_EVENT_ACTION_DOWN, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
232            ARBITRARY_TIME, ARBITRARY_TIME,
233            /*pointerCount*/ 1, pointerProperties, pointerCoords);
234    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
235            &event, DISPLAY_ID,
236            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
237            << "Should reject motion events with pointer ids less than 0.";
238
239    pointerProperties[0].id = MAX_POINTER_ID + 1;
240    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
241            AMOTION_EVENT_ACTION_DOWN, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
242            ARBITRARY_TIME, ARBITRARY_TIME,
243            /*pointerCount*/ 1, pointerProperties, pointerCoords);
244    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
245            &event, DISPLAY_ID,
246            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
247            << "Should reject motion events with pointer ids greater than MAX_POINTER_ID.";
248
249    // Rejects motion events with duplicate pointer ids.
250    pointerProperties[0].id = 1;
251    pointerProperties[1].id = 1;
252    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
253            AMOTION_EVENT_ACTION_DOWN, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
254            ARBITRARY_TIME, ARBITRARY_TIME,
255            /*pointerCount*/ 2, pointerProperties, pointerCoords);
256    ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
257            &event, DISPLAY_ID,
258            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
259            << "Should reject motion events with duplicate pointer ids.";
260}
261
262} // namespace android
263