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 <sensor/ISensorServer.h>
18
19 #include <stdint.h>
20 #include <sys/types.h>
21
22 #include <cutils/native_handle.h>
23 #include <utils/Errors.h>
24 #include <utils/RefBase.h>
25 #include <utils/Timers.h>
26 #include <utils/Vector.h>
27
28 #include <binder/IInterface.h>
29 #include <binder/IResultReceiver.h>
30 #include <binder/Parcel.h>
31
32 #include <sensor/Sensor.h>
33 #include <sensor/ISensorEventConnection.h>
34
35 namespace android {
36 // ----------------------------------------------------------------------------
37
38 enum {
39 GET_SENSOR_LIST = IBinder::FIRST_CALL_TRANSACTION,
40 CREATE_SENSOR_EVENT_CONNECTION,
41 ENABLE_DATA_INJECTION,
42 GET_DYNAMIC_SENSOR_LIST,
43 CREATE_SENSOR_DIRECT_CONNECTION,
44 SET_OPERATION_PARAMETER,
45 GET_RUNTIME_SENSOR_LIST,
46 };
47
48 class BpSensorServer : public BpInterface<ISensorServer>
49 {
50 public:
BpSensorServer(const sp<IBinder> & impl)51 explicit BpSensorServer(const sp<IBinder>& impl)
52 : BpInterface<ISensorServer>(impl)
53 {
54 }
55
56 virtual ~BpSensorServer();
57
getSensorList(const String16 & opPackageName)58 virtual Vector<Sensor> getSensorList(const String16& opPackageName)
59 {
60 Parcel data, reply;
61 data.writeInterfaceToken(ISensorServer::getInterfaceDescriptor());
62 data.writeString16(opPackageName);
63 remote()->transact(GET_SENSOR_LIST, data, &reply);
64 Sensor s;
65 Vector<Sensor> v;
66 uint32_t n = reply.readUint32();
67 v.setCapacity(n);
68 while (n) {
69 n--;
70 if(reply.read(s) != OK) {
71 ALOGE("Failed to read reply from getSensorList");
72 v.clear();
73 break;
74 }
75 v.add(s);
76 }
77 return v;
78 }
79
getDynamicSensorList(const String16 & opPackageName)80 virtual Vector<Sensor> getDynamicSensorList(const String16& opPackageName)
81 {
82 Parcel data, reply;
83 data.writeInterfaceToken(ISensorServer::getInterfaceDescriptor());
84 data.writeString16(opPackageName);
85 remote()->transact(GET_DYNAMIC_SENSOR_LIST, data, &reply);
86 Sensor s;
87 Vector<Sensor> v;
88 uint32_t n = reply.readUint32();
89 v.setCapacity(n);
90 while (n) {
91 n--;
92 if(reply.read(s) != OK) {
93 ALOGE("Failed to read reply from getDynamicSensorList");
94 v.clear();
95 break;
96 }
97 v.add(s);
98 }
99 return v;
100 }
101
getRuntimeSensorList(const String16 & opPackageName,int deviceId)102 virtual Vector<Sensor> getRuntimeSensorList(const String16& opPackageName, int deviceId)
103 {
104 Parcel data, reply;
105 data.writeInterfaceToken(ISensorServer::getInterfaceDescriptor());
106 data.writeString16(opPackageName);
107 data.writeInt32(deviceId);
108 remote()->transact(GET_RUNTIME_SENSOR_LIST, data, &reply);
109 Sensor s;
110 Vector<Sensor> v;
111 uint32_t n = reply.readUint32();
112 v.setCapacity(n);
113 while (n) {
114 n--;
115 reply.read(s);
116 v.add(s);
117 }
118 return v;
119 }
120
createSensorEventConnection(const String8 & packageName,int mode,const String16 & opPackageName,const String16 & attributionTag)121 virtual sp<ISensorEventConnection> createSensorEventConnection(const String8& packageName,
122 int mode, const String16& opPackageName, const String16& attributionTag)
123 {
124 Parcel data, reply;
125 data.writeInterfaceToken(ISensorServer::getInterfaceDescriptor());
126 data.writeString8(packageName);
127 data.writeInt32(mode);
128 data.writeString16(opPackageName);
129 data.writeString16(attributionTag);
130 remote()->transact(CREATE_SENSOR_EVENT_CONNECTION, data, &reply);
131 return interface_cast<ISensorEventConnection>(reply.readStrongBinder());
132 }
133
isDataInjectionEnabled()134 virtual int isDataInjectionEnabled() {
135 Parcel data, reply;
136 data.writeInterfaceToken(ISensorServer::getInterfaceDescriptor());
137 remote()->transact(ENABLE_DATA_INJECTION, data, &reply);
138 return reply.readInt32();
139 }
140
createSensorDirectConnection(const String16 & opPackageName,int deviceId,uint32_t size,int32_t type,int32_t format,const native_handle_t * resource)141 virtual sp<ISensorEventConnection> createSensorDirectConnection(const String16& opPackageName,
142 int deviceId, uint32_t size, int32_t type, int32_t format,
143 const native_handle_t *resource) {
144 Parcel data, reply;
145 data.writeInterfaceToken(ISensorServer::getInterfaceDescriptor());
146 data.writeString16(opPackageName);
147 data.writeInt32(deviceId);
148 data.writeUint32(size);
149 data.writeInt32(type);
150 data.writeInt32(format);
151 data.writeNativeHandle(resource);
152 remote()->transact(CREATE_SENSOR_DIRECT_CONNECTION, data, &reply);
153 return interface_cast<ISensorEventConnection>(reply.readStrongBinder());
154 }
155
setOperationParameter(int32_t handle,int32_t type,const Vector<float> & floats,const Vector<int32_t> & ints)156 virtual int setOperationParameter(int32_t handle, int32_t type,
157 const Vector<float> &floats,
158 const Vector<int32_t> &ints) {
159 Parcel data, reply;
160 data.writeInterfaceToken(ISensorServer::getInterfaceDescriptor());
161 data.writeInt32(handle);
162 data.writeInt32(type);
163 data.writeUint32(static_cast<uint32_t>(floats.size()));
164 for (auto i : floats) {
165 data.writeFloat(i);
166 }
167 data.writeUint32(static_cast<uint32_t>(ints.size()));
168 for (auto i : ints) {
169 data.writeInt32(i);
170 }
171 remote()->transact(SET_OPERATION_PARAMETER, data, &reply);
172 return reply.readInt32();
173 }
174 };
175
176 // Out-of-line virtual method definition to trigger vtable emission in this
177 // translation unit (see clang warning -Wweak-vtables)
~BpSensorServer()178 BpSensorServer::~BpSensorServer() {}
179
180 IMPLEMENT_META_INTERFACE(SensorServer, "android.gui.SensorServer");
181
182 // ----------------------------------------------------------------------
183
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)184 status_t BnSensorServer::onTransact(
185 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
186 {
187 switch(code) {
188 case GET_SENSOR_LIST: {
189 CHECK_INTERFACE(ISensorServer, data, reply);
190 const String16& opPackageName = data.readString16();
191 Vector<Sensor> v(getSensorList(opPackageName));
192 size_t n = v.size();
193 reply->writeUint32(static_cast<uint32_t>(n));
194 for (size_t i = 0; i < n; i++) {
195 reply->write(v[i]);
196 }
197 return NO_ERROR;
198 }
199 case CREATE_SENSOR_EVENT_CONNECTION: {
200 CHECK_INTERFACE(ISensorServer, data, reply);
201 String8 packageName = data.readString8();
202 int32_t mode = data.readInt32();
203 const String16& opPackageName = data.readString16();
204 const String16& attributionTag = data.readString16();
205 sp<ISensorEventConnection> connection(createSensorEventConnection(packageName, mode,
206 opPackageName, attributionTag));
207 reply->writeStrongBinder(IInterface::asBinder(connection));
208 return NO_ERROR;
209 }
210 case ENABLE_DATA_INJECTION: {
211 CHECK_INTERFACE(ISensorServer, data, reply);
212 int32_t ret = isDataInjectionEnabled();
213 reply->writeInt32(static_cast<int32_t>(ret));
214 return NO_ERROR;
215 }
216 case GET_DYNAMIC_SENSOR_LIST: {
217 CHECK_INTERFACE(ISensorServer, data, reply);
218 const String16& opPackageName = data.readString16();
219 Vector<Sensor> v(getDynamicSensorList(opPackageName));
220 size_t n = v.size();
221 reply->writeUint32(static_cast<uint32_t>(n));
222 for (size_t i = 0; i < n; i++) {
223 reply->write(v[i]);
224 }
225 return NO_ERROR;
226 }
227 case GET_RUNTIME_SENSOR_LIST: {
228 CHECK_INTERFACE(ISensorServer, data, reply);
229 const String16& opPackageName = data.readString16();
230 const int deviceId = data.readInt32();
231 Vector<Sensor> v(getRuntimeSensorList(opPackageName, deviceId));
232 size_t n = v.size();
233 reply->writeUint32(static_cast<uint32_t>(n));
234 for (size_t i = 0; i < n; i++) {
235 reply->write(v[i]);
236 }
237 return NO_ERROR;
238 }
239 case CREATE_SENSOR_DIRECT_CONNECTION: {
240 CHECK_INTERFACE(ISensorServer, data, reply);
241 const String16& opPackageName = data.readString16();
242 const int deviceId = data.readInt32();
243 uint32_t size = data.readUint32();
244 int32_t type = data.readInt32();
245 int32_t format = data.readInt32();
246 native_handle_t *resource = data.readNativeHandle();
247 // Avoid a crash in native_handle_close if resource is nullptr
248 if (resource == nullptr) {
249 return BAD_VALUE;
250 }
251 native_handle_set_fdsan_tag(resource);
252 sp<ISensorEventConnection> ch = createSensorDirectConnection(
253 opPackageName, deviceId, size, type, format, resource);
254 native_handle_close_with_tag(resource);
255 native_handle_delete(resource);
256 reply->writeStrongBinder(IInterface::asBinder(ch));
257 return NO_ERROR;
258 }
259 case SET_OPERATION_PARAMETER: {
260 CHECK_INTERFACE(ISensorServer, data, reply);
261 int32_t handle;
262 int32_t type;
263 Vector<float> floats;
264 Vector<int32_t> ints;
265 uint32_t count;
266
267 handle = data.readInt32();
268 type = data.readInt32();
269
270 count = data.readUint32();
271 if (count > (data.dataAvail() / sizeof(float))) {
272 return BAD_VALUE;
273 }
274 floats.resize(count);
275 for (auto &i : floats) {
276 i = data.readFloat();
277 }
278
279 count = data.readUint32();
280 if (count > (data.dataAvail() / sizeof(int32_t))) {
281 return BAD_VALUE;
282 }
283 ints.resize(count);
284 for (auto &i : ints) {
285 i = data.readInt32();
286 }
287
288 int32_t ret = setOperationParameter(handle, type, floats, ints);
289 reply->writeInt32(ret);
290 return NO_ERROR;
291 }
292 case SHELL_COMMAND_TRANSACTION: {
293 int in = data.readFileDescriptor();
294 int out = data.readFileDescriptor();
295 int err = data.readFileDescriptor();
296 int argc = data.readInt32();
297 Vector<String16> args;
298 for (int i = 0; i < argc && data.dataAvail() > 0; i++) {
299 args.add(data.readString16());
300 }
301 sp<IBinder> unusedCallback;
302 sp<IResultReceiver> resultReceiver;
303 status_t status;
304 if ((status = data.readNullableStrongBinder(&unusedCallback)) != NO_ERROR) {
305 return status;
306 }
307 if ((status = data.readNullableStrongBinder(&resultReceiver)) != NO_ERROR) {
308 return status;
309 }
310 status = shellCommand(in, out, err, args);
311 if (resultReceiver != nullptr) {
312 resultReceiver->send(status);
313 }
314 return NO_ERROR;
315 }
316 }
317 return BBinder::onTransact(code, data, reply, flags);
318 }
319
320 // ----------------------------------------------------------------------------
321 }; // namespace android
322