keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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 | #define LOG_TAG "VehicleNetwork" |
| 18 | |
| 19 | #include <memory> |
| 20 | |
| 21 | #include <binder/IPCThreadState.h> |
| 22 | #include <private/android_filesystem_config.h> |
| 23 | |
| 24 | #include <utils/Log.h> |
| 25 | |
| 26 | #include <IVehicleNetwork.h> |
| 27 | #include <VehicleNetworkProto.pb.h> |
| 28 | |
keunyoung | 15882e5 | 2015-09-16 16:57:58 -0700 | [diff] [blame] | 29 | #include "BinderUtil.h" |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 30 | #include "VehicleNetworkProtoUtil.h" |
| 31 | |
| 32 | namespace android { |
| 33 | |
| 34 | enum { |
| 35 | LIST_PROPERTIES = IBinder::FIRST_CALL_TRANSACTION, |
| 36 | SET_PROPERTY, |
| 37 | GET_PROPERTY, |
| 38 | SUBSCRIBE, |
| 39 | UNSUBSCRIBE, |
keunyoung | 1ab8e18 | 2015-09-24 09:25:22 -0700 | [diff] [blame^] | 40 | INJECT_EVENT, |
| 41 | START_MOCKING, |
| 42 | STOP_MOCKING, |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 43 | }; |
| 44 | |
| 45 | // ---------------------------------------------------------------------------- |
| 46 | |
keunyoung | 15882e5 | 2015-09-16 16:57:58 -0700 | [diff] [blame] | 47 | const char IVehicleNetwork::SERVICE_NAME[] = "com.android.car.vehiclenetwork.IVehicleNetwork"; |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 48 | |
| 49 | // ---------------------------------------------------------------------------- |
| 50 | |
| 51 | class BpVehicleNetwork : public BpInterface<IVehicleNetwork> { |
| 52 | public: |
| 53 | BpVehicleNetwork(const sp<IBinder> & impl) |
| 54 | : BpInterface<IVehicleNetwork>(impl) { |
| 55 | } |
| 56 | |
| 57 | virtual sp<VehiclePropertiesHolder> listProperties(int32_t property) { |
| 58 | sp<VehiclePropertiesHolder> holder; |
| 59 | Parcel data, reply; |
| 60 | data.writeInterfaceToken(IVehicleNetwork::getInterfaceDescriptor()); |
| 61 | data.writeInt32(property); |
| 62 | status_t status = remote()->transact(LIST_PROPERTIES, data, &reply); |
| 63 | if (status == NO_ERROR) { |
keunyoung | 15882e5 | 2015-09-16 16:57:58 -0700 | [diff] [blame] | 64 | reply.readExceptionCode(); // for compatibility with java |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 65 | if (reply.readInt32() == 0) { // no result |
| 66 | return holder; |
| 67 | } |
| 68 | ReadableBlobHolder blob(new Parcel::ReadableBlob()); |
| 69 | if (blob.blob == NULL) { |
| 70 | ALOGE("listProperties, no memory"); |
| 71 | return holder; |
| 72 | } |
| 73 | int32_t size = reply.readInt32(); |
| 74 | status = reply.readBlob(size, blob.blob); |
| 75 | if (status != NO_ERROR) { |
| 76 | ALOGE("listProperties, cannot read blob %d", status); |
| 77 | return holder; |
| 78 | } |
| 79 | //TODO make this more memory efficient |
| 80 | std::unique_ptr<VehiclePropConfigs> configs(new VehiclePropConfigs()); |
| 81 | if (configs.get() == NULL) { |
| 82 | return holder; |
| 83 | } |
| 84 | if(!configs->ParseFromArray(blob.blob->data(), size)) { |
| 85 | ALOGE("listProperties, cannot parse reply"); |
| 86 | return holder; |
| 87 | } |
keunyoung | d32f4e6 | 2015-09-21 11:33:06 -0700 | [diff] [blame] | 88 | holder = new VehiclePropertiesHolder(); |
| 89 | ASSERT_OR_HANDLE_NO_MEMORY(holder.get(), return); |
| 90 | status = VehicleNetworkProtoUtil::fromVehiclePropConfigs(*configs.get(), |
| 91 | holder->getList()); |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 92 | if (status != NO_ERROR) { |
| 93 | ALOGE("listProperties, cannot convert VehiclePropConfigs %d", status); |
| 94 | return holder; |
| 95 | } |
keunyoung | d32f4e6 | 2015-09-21 11:33:06 -0700 | [diff] [blame] | 96 | |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 97 | } |
| 98 | return holder; |
| 99 | } |
| 100 | |
| 101 | virtual status_t setProperty(const vehicle_prop_value_t& value) { |
| 102 | Parcel data, reply; |
| 103 | data.writeInterfaceToken(IVehicleNetwork::getInterfaceDescriptor()); |
| 104 | data.writeInt32(1); // 0 means no value. For compatibility with aidl based code. |
| 105 | std::unique_ptr<VehiclePropValue> v(new VehiclePropValue()); |
| 106 | ASSERT_OR_HANDLE_NO_MEMORY(v.get(), return NO_MEMORY); |
| 107 | VehicleNetworkProtoUtil::toVehiclePropValue(value, *v.get()); |
| 108 | int size = v->ByteSize(); |
| 109 | WritableBlobHolder blob(new Parcel::WritableBlob()); |
| 110 | ASSERT_OR_HANDLE_NO_MEMORY(blob.blob, return NO_MEMORY); |
| 111 | data.writeInt32(size); |
| 112 | data.writeBlob(size, false, blob.blob); |
| 113 | v->SerializeToArray(blob.blob->data(), size); |
| 114 | status_t status = remote()->transact(SET_PROPERTY, data, &reply); |
| 115 | return status; |
| 116 | } |
| 117 | |
| 118 | virtual status_t getProperty(vehicle_prop_value_t* value) { |
| 119 | Parcel data, reply; |
| 120 | data.writeInterfaceToken(IVehicleNetwork::getInterfaceDescriptor()); |
| 121 | // only needs to send property itself. |
| 122 | data.writeInt32(value->prop); |
| 123 | status_t status = remote()->transact(GET_PROPERTY, data, &reply); |
| 124 | if (status == NO_ERROR) { |
keunyoung | 15882e5 | 2015-09-16 16:57:58 -0700 | [diff] [blame] | 125 | reply.readExceptionCode(); // for compatibility with java |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 126 | if (reply.readInt32() == 0) { // no result |
| 127 | return BAD_VALUE; |
| 128 | } |
| 129 | ReadableBlobHolder blob(new Parcel::ReadableBlob()); |
| 130 | ASSERT_OR_HANDLE_NO_MEMORY(blob.blob, return NO_MEMORY); |
| 131 | int32_t size = reply.readInt32(); |
| 132 | status = reply.readBlob(size, blob.blob); |
| 133 | if (status != NO_ERROR) { |
| 134 | ALOGE("getProperty, cannot read blob"); |
| 135 | return status; |
| 136 | } |
| 137 | std::unique_ptr<VehiclePropValue> v(new VehiclePropValue()); |
| 138 | ASSERT_OR_HANDLE_NO_MEMORY(v.get(), return NO_MEMORY); |
| 139 | if (!v->ParseFromArray(blob.blob->data(), size)) { |
| 140 | ALOGE("getProperty, cannot parse reply"); |
| 141 | return BAD_VALUE; |
| 142 | } |
| 143 | status = VehicleNetworkProtoUtil::fromVehiclePropValue(*v.get(), *value); |
| 144 | } |
| 145 | return status; |
| 146 | } |
| 147 | |
| 148 | virtual status_t subscribe(const sp<IVehicleNetworkListener> &listener, int32_t property, |
| 149 | float sampleRate) { |
| 150 | Parcel data, reply; |
| 151 | data.writeInterfaceToken(IVehicleNetwork::getInterfaceDescriptor()); |
| 152 | data.writeStrongBinder(IInterface::asBinder(listener)); |
| 153 | data.writeInt32(property); |
| 154 | data.writeFloat(sampleRate); |
| 155 | status_t status = remote()->transact(SUBSCRIBE, data, &reply); |
| 156 | return status; |
| 157 | } |
| 158 | |
| 159 | virtual void unsubscribe(const sp<IVehicleNetworkListener> &listener, int32_t property) { |
| 160 | Parcel data, reply; |
| 161 | data.writeInterfaceToken(IVehicleNetwork::getInterfaceDescriptor()); |
| 162 | data.writeStrongBinder(IInterface::asBinder(listener)); |
| 163 | data.writeInt32(property); |
| 164 | status_t status = remote()->transact(UNSUBSCRIBE, data, &reply); |
| 165 | if (status != NO_ERROR) { |
| 166 | ALOGI("unsubscribing property %d failed %d", property, status); |
| 167 | } |
| 168 | } |
keunyoung | 1ab8e18 | 2015-09-24 09:25:22 -0700 | [diff] [blame^] | 169 | |
| 170 | virtual status_t injectEvent(const vehicle_prop_value_t& value) { |
| 171 | Parcel data, reply; |
| 172 | data.writeInterfaceToken(IVehicleNetwork::getInterfaceDescriptor()); |
| 173 | data.writeInt32(1); // 0 means no value. For compatibility with aidl based code. |
| 174 | std::unique_ptr<VehiclePropValue> v(new VehiclePropValue()); |
| 175 | ASSERT_OR_HANDLE_NO_MEMORY(v.get(), return NO_MEMORY); |
| 176 | VehicleNetworkProtoUtil::toVehiclePropValue(value, *v.get()); |
| 177 | int size = v->ByteSize(); |
| 178 | WritableBlobHolder blob(new Parcel::WritableBlob()); |
| 179 | ASSERT_OR_HANDLE_NO_MEMORY(blob.blob, return NO_MEMORY); |
| 180 | data.writeInt32(size); |
| 181 | data.writeBlob(size, false, blob.blob); |
| 182 | v->SerializeToArray(blob.blob->data(), size); |
| 183 | status_t status = remote()->transact(INJECT_EVENT, data, &reply); |
| 184 | return status; |
| 185 | } |
| 186 | |
| 187 | virtual status_t startMocking(const sp<IVehicleNetworkHalMock>& mock) { |
| 188 | Parcel data, reply; |
| 189 | data.writeInterfaceToken(IVehicleNetwork::getInterfaceDescriptor()); |
| 190 | data.writeStrongBinder(IInterface::asBinder(mock)); |
| 191 | status_t status = remote()->transact(START_MOCKING, data, &reply); |
| 192 | return status; |
| 193 | } |
| 194 | |
| 195 | virtual void stopMocking(const sp<IVehicleNetworkHalMock>& mock) { |
| 196 | Parcel data, reply; |
| 197 | data.writeInterfaceToken(IVehicleNetwork::getInterfaceDescriptor()); |
| 198 | data.writeStrongBinder(IInterface::asBinder(mock)); |
| 199 | status_t status = remote()->transact(STOP_MOCKING, data, &reply); |
| 200 | if (status != NO_ERROR) { |
| 201 | ALOGI("stop mocking failed %d", status); |
| 202 | } |
| 203 | } |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 204 | }; |
| 205 | |
| 206 | IMPLEMENT_META_INTERFACE(VehicleNetwork, IVehicleNetwork::SERVICE_NAME); |
| 207 | |
| 208 | // ---------------------------------------------------------------------- |
| 209 | |
| 210 | static bool isSystemUser() { |
| 211 | uid_t uid = IPCThreadState::self()->getCallingUid(); |
| 212 | switch (uid) { |
| 213 | // This list will be expanded. Only those UIDs are allowed to access vehicle network |
| 214 | // for now. There can be per property based UID check built-in as well. |
| 215 | case AID_ROOT: |
| 216 | case AID_SYSTEM: |
| 217 | case AID_AUDIO: { |
| 218 | return true; |
| 219 | } break; |
keunyoung | 15882e5 | 2015-09-16 16:57:58 -0700 | [diff] [blame] | 220 | default: { |
| 221 | ALOGE("non-system user tried access, uid %d", uid); |
| 222 | } break; |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 223 | } |
| 224 | return false; |
| 225 | } |
| 226 | |
| 227 | status_t BnVehicleNetwork::onTransact(uint32_t code, const Parcel& data, Parcel* reply, |
| 228 | uint32_t flags) { |
| 229 | if (!isSystemUser()) { |
| 230 | return PERMISSION_DENIED; |
| 231 | } |
| 232 | status_t r; |
| 233 | switch (code) { |
| 234 | case LIST_PROPERTIES: { |
| 235 | CHECK_INTERFACE(IVehicleNetwork, data, reply); |
| 236 | int32_t property = data.readInt32(); |
| 237 | sp<VehiclePropertiesHolder> holder = listProperties(property); |
| 238 | if (holder.get() == NULL) { // given property not found |
keunyoung | 15882e5 | 2015-09-16 16:57:58 -0700 | [diff] [blame] | 239 | BinderUtil::fillObjectResultReply(reply, false /* isValid */); |
| 240 | return NO_ERROR; |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 241 | } |
| 242 | std::unique_ptr<VehiclePropConfigs> configs(new VehiclePropConfigs()); |
| 243 | ASSERT_OR_HANDLE_NO_MEMORY(configs.get(), return NO_MEMORY); |
keunyoung | d32f4e6 | 2015-09-21 11:33:06 -0700 | [diff] [blame] | 244 | VehicleNetworkProtoUtil::toVehiclePropConfigs(holder->getList(), *configs.get()); |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 245 | int size = configs->ByteSize(); |
| 246 | WritableBlobHolder blob(new Parcel::WritableBlob()); |
| 247 | ASSERT_OR_HANDLE_NO_MEMORY(blob.blob, return NO_MEMORY); |
keunyoung | 15882e5 | 2015-09-16 16:57:58 -0700 | [diff] [blame] | 248 | BinderUtil::fillObjectResultReply(reply, true); |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 249 | reply->writeInt32(size); |
| 250 | reply->writeBlob(size, false, blob.blob); |
| 251 | configs->SerializeToArray(blob.blob->data(), size); |
| 252 | return NO_ERROR; |
| 253 | } break; |
| 254 | case SET_PROPERTY: { |
| 255 | CHECK_INTERFACE(IVehicleNetwork, data, reply); |
| 256 | if (data.readInt32() == 0) { // java side allows passing null with this. |
| 257 | return BAD_VALUE; |
| 258 | } |
| 259 | ScopedVehiclePropValue value; |
| 260 | ReadableBlobHolder blob(new Parcel::ReadableBlob()); |
| 261 | ASSERT_OR_HANDLE_NO_MEMORY(blob.blob, return NO_MEMORY); |
| 262 | int32_t size = data.readInt32(); |
| 263 | r = data.readBlob(size, blob.blob); |
| 264 | if (r != NO_ERROR) { |
| 265 | ALOGE("setProperty:service, cannot read blob"); |
| 266 | return r; |
| 267 | } |
| 268 | std::unique_ptr<VehiclePropValue> v(new VehiclePropValue()); |
| 269 | ASSERT_OR_HANDLE_NO_MEMORY(v.get(), return NO_MEMORY); |
| 270 | if (!v->ParseFromArray(blob.blob->data(), size)) { |
| 271 | ALOGE("setProperty:service, cannot parse data"); |
| 272 | return BAD_VALUE; |
| 273 | } |
| 274 | r = VehicleNetworkProtoUtil::fromVehiclePropValue(*v.get(), value.value); |
| 275 | if (r != NO_ERROR) { |
| 276 | ALOGE("setProperty:service, cannot convert data"); |
| 277 | return BAD_VALUE; |
| 278 | } |
| 279 | r = setProperty(value.value); |
keunyoung | 15882e5 | 2015-09-16 16:57:58 -0700 | [diff] [blame] | 280 | BinderUtil::fillNoResultReply(reply); |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 281 | return r; |
| 282 | } break; |
| 283 | case GET_PROPERTY: { |
| 284 | CHECK_INTERFACE(IVehicleNetwork, data, reply); |
| 285 | ScopedVehiclePropValue value; |
| 286 | value.value.prop = data.readInt32(); |
| 287 | r = getProperty(&(value.value)); |
| 288 | if (r == NO_ERROR) { |
keunyoung | 15882e5 | 2015-09-16 16:57:58 -0700 | [diff] [blame] | 289 | BinderUtil::fillObjectResultReply(reply, true); |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 290 | std::unique_ptr<VehiclePropValue> v(new VehiclePropValue()); |
| 291 | ASSERT_OR_HANDLE_NO_MEMORY(v.get(), return NO_MEMORY); |
| 292 | VehicleNetworkProtoUtil::toVehiclePropValue(value.value, *v.get()); |
| 293 | int size = v->ByteSize(); |
| 294 | WritableBlobHolder blob(new Parcel::WritableBlob()); |
| 295 | ASSERT_OR_HANDLE_NO_MEMORY(blob.blob, return NO_MEMORY); |
| 296 | reply->writeInt32(size); |
| 297 | reply->writeBlob(size, false, blob.blob); |
| 298 | v->SerializeToArray(blob.blob->data(), size); |
| 299 | } |
| 300 | return r; |
| 301 | } break; |
| 302 | case SUBSCRIBE: { |
| 303 | CHECK_INTERFACE(IVehicleNetwork, data, reply); |
| 304 | sp<IVehicleNetworkListener> listener = |
| 305 | interface_cast<IVehicleNetworkListener>(data.readStrongBinder()); |
| 306 | int32_t property = data.readInt32(); |
| 307 | float sampleRate = data.readFloat(); |
| 308 | r = subscribe(listener, property, sampleRate); |
keunyoung | 15882e5 | 2015-09-16 16:57:58 -0700 | [diff] [blame] | 309 | BinderUtil::fillNoResultReply(reply); |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 310 | return r; |
| 311 | } break; |
| 312 | case UNSUBSCRIBE: { |
| 313 | CHECK_INTERFACE(IVehicleNetwork, data, reply); |
| 314 | sp<IVehicleNetworkListener> listener = |
| 315 | interface_cast<IVehicleNetworkListener>(data.readStrongBinder()); |
| 316 | int32_t property = data.readInt32(); |
| 317 | unsubscribe(listener, property); |
keunyoung | 15882e5 | 2015-09-16 16:57:58 -0700 | [diff] [blame] | 318 | BinderUtil::fillNoResultReply(reply); |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 319 | return NO_ERROR; |
| 320 | } break; |
keunyoung | 1ab8e18 | 2015-09-24 09:25:22 -0700 | [diff] [blame^] | 321 | case INJECT_EVENT: { |
| 322 | CHECK_INTERFACE(IVehicleNetwork, data, reply); |
| 323 | if (data.readInt32() == 0) { // java side allows passing null with this. |
| 324 | return BAD_VALUE; |
| 325 | } |
| 326 | ScopedVehiclePropValue value; |
| 327 | ReadableBlobHolder blob(new Parcel::ReadableBlob()); |
| 328 | ASSERT_OR_HANDLE_NO_MEMORY(blob.blob, return NO_MEMORY); |
| 329 | int32_t size = data.readInt32(); |
| 330 | r = data.readBlob(size, blob.blob); |
| 331 | if (r != NO_ERROR) { |
| 332 | ALOGE("injectEvent:service, cannot read blob"); |
| 333 | return r; |
| 334 | } |
| 335 | std::unique_ptr<VehiclePropValue> v(new VehiclePropValue()); |
| 336 | ASSERT_OR_HANDLE_NO_MEMORY(v.get(), return NO_MEMORY); |
| 337 | if (!v->ParseFromArray(blob.blob->data(), size)) { |
| 338 | ALOGE("injectEvent:service, cannot parse data"); |
| 339 | return BAD_VALUE; |
| 340 | } |
| 341 | r = VehicleNetworkProtoUtil::fromVehiclePropValue(*v.get(), value.value); |
| 342 | if (r != NO_ERROR) { |
| 343 | ALOGE("injectEvent:service, cannot convert data"); |
| 344 | return BAD_VALUE; |
| 345 | } |
| 346 | r = injectEvent(value.value); |
| 347 | BinderUtil::fillNoResultReply(reply); |
| 348 | return r; |
| 349 | } break; |
| 350 | case START_MOCKING: { |
| 351 | CHECK_INTERFACE(IVehicleNetwork, data, reply); |
| 352 | sp<IVehicleNetworkHalMock> mock = |
| 353 | interface_cast<IVehicleNetworkHalMock>(data.readStrongBinder()); |
| 354 | r = startMocking(mock); |
| 355 | BinderUtil::fillNoResultReply(reply); |
| 356 | return r; |
| 357 | } break; |
| 358 | case STOP_MOCKING: { |
| 359 | CHECK_INTERFACE(IVehicleNetwork, data, reply); |
| 360 | sp<IVehicleNetworkHalMock> mock = |
| 361 | interface_cast<IVehicleNetworkHalMock>(data.readStrongBinder()); |
| 362 | stopMocking(mock); |
| 363 | BinderUtil::fillNoResultReply(reply); |
| 364 | return NO_ERROR; |
| 365 | } break; |
keunyoung | e18e25d | 2015-08-28 15:57:19 -0700 | [diff] [blame] | 366 | default: |
| 367 | return BBinder::onTransact(code, data, reply, flags); |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | }; // namespace android |