Andreas Huber | c0b6c53 | 2016-08-15 09:25:02 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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_NDEBUG 0 |
| 18 | #define LOG_TAG "android_os_HwParcel" |
| 19 | #include <android-base/logging.h> |
| 20 | |
| 21 | #include "android_os_HwParcel.h" |
| 22 | |
| 23 | #include "android_os_HwBinder.h" |
| 24 | #include "android_os_HwRemoteBinder.h" |
| 25 | |
| 26 | #include <JNIHelp.h> |
| 27 | #include <android_runtime/AndroidRuntime.h> |
| 28 | #include <hwbinder/Status.h> |
| 29 | #include <nativehelper/ScopedLocalRef.h> |
| 30 | |
| 31 | #include "core_jni_helpers.h" |
| 32 | |
| 33 | using android::AndroidRuntime; |
| 34 | |
| 35 | using ::android::hardware::hidl_string; |
| 36 | using ::android::hardware::hidl_vec; |
| 37 | |
| 38 | #define PACKAGE_PATH "android/os" |
| 39 | #define CLASS_NAME "HwParcel" |
| 40 | #define CLASS_PATH PACKAGE_PATH "/" CLASS_NAME |
| 41 | |
| 42 | namespace android { |
| 43 | |
| 44 | static struct fields_t { |
| 45 | jfieldID contextID; |
| 46 | jmethodID constructID; |
| 47 | |
| 48 | } gFields; |
| 49 | |
| 50 | void signalExceptionForError(JNIEnv *env, status_t err) { |
| 51 | switch (err) { |
| 52 | case OK: |
| 53 | break; |
| 54 | |
| 55 | case NO_MEMORY: |
| 56 | { |
| 57 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 58 | break; |
| 59 | } |
| 60 | |
| 61 | case INVALID_OPERATION: |
| 62 | { |
| 63 | jniThrowException( |
| 64 | env, "java/lang/UnsupportedOperationException", NULL); |
| 65 | break; |
| 66 | } |
| 67 | |
| 68 | case BAD_VALUE: |
| 69 | { |
| 70 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 71 | break; |
| 72 | } |
| 73 | |
| 74 | case BAD_INDEX: |
| 75 | { |
| 76 | jniThrowException(env, "java/lang/IndexOutOfBoundsException", NULL); |
| 77 | break; |
| 78 | } |
| 79 | |
| 80 | case BAD_TYPE: |
| 81 | { |
| 82 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 83 | break; |
| 84 | } |
| 85 | |
| 86 | case NAME_NOT_FOUND: |
| 87 | { |
| 88 | jniThrowException(env, "java/util/NoSuchElementException", NULL); |
| 89 | break; |
| 90 | } |
| 91 | |
| 92 | case PERMISSION_DENIED: |
| 93 | { |
| 94 | jniThrowException(env, "java/lang/SecurityException", NULL); |
| 95 | break; |
| 96 | } |
| 97 | |
| 98 | case NO_INIT: |
| 99 | { |
| 100 | jniThrowException( |
| 101 | env, "java/lang/RuntimeException", "Not initialized"); |
| 102 | break; |
| 103 | } |
| 104 | |
| 105 | case ALREADY_EXISTS: |
| 106 | { |
| 107 | jniThrowException( |
| 108 | env, "java/lang/RuntimeException", "Item already exists"); |
| 109 | break; |
| 110 | } |
| 111 | |
| 112 | default: |
| 113 | { |
| 114 | jniThrowException( |
| 115 | env, "java/lang/RuntimeException", "Unknown error"); |
| 116 | |
| 117 | break; |
| 118 | } |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | // static |
| 123 | void JHwParcel::InitClass(JNIEnv *env) { |
| 124 | ScopedLocalRef<jclass> clazz( |
| 125 | env, FindClassOrDie(env, CLASS_PATH)); |
| 126 | |
| 127 | gFields.contextID = |
| 128 | GetFieldIDOrDie(env, clazz.get(), "mNativeContext", "J"); |
| 129 | |
| 130 | gFields.constructID = GetMethodIDOrDie(env, clazz.get(), "<init>", "(Z)V"); |
| 131 | } |
| 132 | |
| 133 | // static |
| 134 | sp<JHwParcel> JHwParcel::SetNativeContext( |
| 135 | JNIEnv *env, jobject thiz, const sp<JHwParcel> &context) { |
| 136 | sp<JHwParcel> old = (JHwParcel *)env->GetLongField(thiz, gFields.contextID); |
| 137 | |
| 138 | if (context != NULL) { |
| 139 | context->incStrong(NULL /* id */); |
| 140 | } |
| 141 | |
| 142 | if (old != NULL) { |
| 143 | old->decStrong(NULL /* id */); |
| 144 | } |
| 145 | |
| 146 | env->SetLongField(thiz, gFields.contextID, (long)context.get()); |
| 147 | |
| 148 | return old; |
| 149 | } |
| 150 | |
| 151 | // static |
| 152 | sp<JHwParcel> JHwParcel::GetNativeContext(JNIEnv *env, jobject thiz) { |
| 153 | return (JHwParcel *)env->GetLongField(thiz, gFields.contextID); |
| 154 | } |
| 155 | |
| 156 | JHwParcel::JHwParcel(JNIEnv *env, jobject thiz) |
| 157 | : mParcel(NULL), |
| 158 | mOwnsParcel(false), |
| 159 | mTransactCallback(nullptr), |
| 160 | mWasSent(false) { |
| 161 | jclass clazz = env->GetObjectClass(thiz); |
| 162 | CHECK(clazz != NULL); |
| 163 | |
| 164 | mClass = (jclass)env->NewGlobalRef(clazz); |
| 165 | mObject = env->NewWeakGlobalRef(thiz); |
| 166 | } |
| 167 | |
| 168 | JHwParcel::~JHwParcel() { |
| 169 | JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| 170 | |
| 171 | mStorage.release(env); |
| 172 | |
| 173 | setParcel(NULL, false /* assumeOwnership */); |
| 174 | |
| 175 | env->DeleteWeakGlobalRef(mObject); |
| 176 | mObject = NULL; |
| 177 | |
| 178 | env->DeleteGlobalRef(mClass); |
| 179 | mClass = NULL; |
| 180 | } |
| 181 | |
| 182 | hardware::Parcel *JHwParcel::getParcel() { |
| 183 | return mParcel; |
| 184 | } |
| 185 | |
| 186 | EphemeralStorage *JHwParcel::getStorage() { |
| 187 | return &mStorage; |
| 188 | } |
| 189 | |
| 190 | void JHwParcel::setParcel(hardware::Parcel *parcel, bool assumeOwnership) { |
| 191 | if (mParcel && mOwnsParcel) { |
| 192 | delete mParcel; |
| 193 | } |
| 194 | |
| 195 | mParcel = parcel; |
| 196 | mOwnsParcel = assumeOwnership; |
| 197 | } |
| 198 | |
| 199 | // static |
| 200 | jobject JHwParcel::NewObject(JNIEnv *env) { |
| 201 | ScopedLocalRef<jclass> clazz(env, FindClassOrDie(env, CLASS_PATH)); |
| 202 | |
| 203 | return env->NewObject( |
| 204 | clazz.get(), gFields.constructID, false /* allocate */); |
| 205 | } |
| 206 | |
| 207 | void JHwParcel::setTransactCallback( |
| 208 | ::android::hardware::IBinder::TransactCallback cb) { |
| 209 | mTransactCallback = cb; |
| 210 | } |
| 211 | |
| 212 | void JHwParcel::send() { |
| 213 | CHECK(mTransactCallback != nullptr); |
| 214 | CHECK(mParcel != nullptr); |
| 215 | |
| 216 | mTransactCallback(*mParcel); |
| 217 | mTransactCallback = nullptr; |
| 218 | |
| 219 | mWasSent = true; |
| 220 | } |
| 221 | |
| 222 | bool JHwParcel::wasSent() const { |
| 223 | return mWasSent; |
| 224 | } |
| 225 | |
| 226 | } // namespace android |
| 227 | |
| 228 | //////////////////////////////////////////////////////////////////////////////// |
| 229 | |
| 230 | using namespace android; |
| 231 | |
| 232 | static void releaseNativeContext(void *nativeContext) { |
| 233 | sp<JHwParcel> parcel = (JHwParcel *)nativeContext; |
| 234 | |
| 235 | if (parcel != NULL) { |
| 236 | parcel->decStrong(NULL /* id */); |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | static jlong JHwParcel_native_init(JNIEnv *env) { |
| 241 | JHwParcel::InitClass(env); |
| 242 | |
| 243 | return reinterpret_cast<jlong>(&releaseNativeContext); |
| 244 | } |
| 245 | |
| 246 | static void JHwParcel_native_setup( |
| 247 | JNIEnv *env, jobject thiz, jboolean allocate) { |
| 248 | sp<JHwParcel> context = new JHwParcel(env, thiz); |
| 249 | |
| 250 | if (allocate) { |
| 251 | context->setParcel(new hardware::Parcel, true /* assumeOwnership */); |
| 252 | } |
| 253 | |
| 254 | JHwParcel::SetNativeContext(env, thiz, context); |
| 255 | } |
| 256 | |
| 257 | static void JHwParcel_native_writeInterfaceToken( |
| 258 | JNIEnv *env, jobject thiz, jstring interfaceNameObj) { |
| 259 | if (interfaceNameObj == NULL) { |
| 260 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 261 | return; |
| 262 | } |
| 263 | |
| 264 | const jchar *interfaceName = env->GetStringCritical(interfaceNameObj, NULL); |
| 265 | if (interfaceName) { |
| 266 | hardware::Parcel *parcel = |
| 267 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); |
| 268 | |
| 269 | status_t err = parcel->writeInterfaceToken( |
| 270 | String16( |
| 271 | reinterpret_cast<const char16_t *>(interfaceName), |
| 272 | env->GetStringLength(interfaceNameObj))); |
| 273 | |
| 274 | env->ReleaseStringCritical(interfaceNameObj, interfaceName); |
| 275 | interfaceName = NULL; |
| 276 | |
| 277 | signalExceptionForError(env, err); |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | static void JHwParcel_native_enforceInterface( |
| 282 | JNIEnv *env, jobject thiz, jstring interfaceNameObj) { |
| 283 | // XXX original binder Parcel enforceInterface implementation does some |
| 284 | // mysterious things regarding strictModePolicy(), figure out if we need |
| 285 | // that here as well. |
| 286 | if (interfaceNameObj == NULL) { |
| 287 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 288 | return; |
| 289 | } |
| 290 | |
| 291 | const jchar *interfaceName = env->GetStringCritical(interfaceNameObj, NULL); |
| 292 | if (interfaceName) { |
| 293 | hardware::Parcel *parcel = |
| 294 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); |
| 295 | |
| 296 | bool valid = parcel->enforceInterface( |
| 297 | String16( |
| 298 | reinterpret_cast<const char16_t *>(interfaceName), |
| 299 | env->GetStringLength(interfaceNameObj))); |
| 300 | |
| 301 | env->ReleaseStringCritical(interfaceNameObj, interfaceName); |
| 302 | interfaceName = NULL; |
| 303 | |
| 304 | if (!valid) { |
| 305 | jniThrowException( |
| 306 | env, |
| 307 | "java/lang/SecurityException", |
| 308 | "HWBinder invocation to an incorrect interface"); |
| 309 | } |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | #define DEFINE_PARCEL_WRITER(Suffix,Type) \ |
| 314 | static void JHwParcel_native_write ## Suffix( \ |
| 315 | JNIEnv *env, jobject thiz, Type val) { \ |
| 316 | hardware::Parcel *parcel = \ |
| 317 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); \ |
| 318 | \ |
| 319 | status_t err = parcel->write ## Suffix(val); \ |
| 320 | signalExceptionForError(env, err); \ |
| 321 | } |
| 322 | |
| 323 | #define DEFINE_PARCEL_READER(Suffix,Type) \ |
| 324 | static Type JHwParcel_native_read ## Suffix( \ |
| 325 | JNIEnv *env, jobject thiz) { \ |
| 326 | hardware::Parcel *parcel = \ |
| 327 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); \ |
| 328 | \ |
| 329 | Type val; \ |
| 330 | status_t err = parcel->read ## Suffix(&val); \ |
| 331 | signalExceptionForError(env, err); \ |
| 332 | \ |
| 333 | return val; \ |
| 334 | } |
| 335 | |
| 336 | DEFINE_PARCEL_WRITER(Int8,jbyte) |
| 337 | DEFINE_PARCEL_WRITER(Int16,jshort) |
| 338 | DEFINE_PARCEL_WRITER(Int32,jint) |
| 339 | DEFINE_PARCEL_WRITER(Int64,jlong) |
| 340 | DEFINE_PARCEL_WRITER(Float,jfloat) |
| 341 | DEFINE_PARCEL_WRITER(Double,jdouble) |
| 342 | |
| 343 | DEFINE_PARCEL_READER(Int8,jbyte) |
| 344 | DEFINE_PARCEL_READER(Int16,jshort) |
| 345 | DEFINE_PARCEL_READER(Int32,jint) |
| 346 | DEFINE_PARCEL_READER(Int64,jlong) |
| 347 | DEFINE_PARCEL_READER(Float,jfloat) |
| 348 | DEFINE_PARCEL_READER(Double,jdouble) |
| 349 | |
| 350 | static void JHwParcel_native_writeStatus( |
| 351 | JNIEnv *env, jobject thiz, jint statusCode) { |
| 352 | using hardware::Status; |
| 353 | |
| 354 | Status status; |
| 355 | switch (statusCode) { |
| 356 | case 0: // kStatusSuccess |
| 357 | status = Status::ok(); |
| 358 | break; |
| 359 | case -1: // kStatusError |
| 360 | status = Status::fromStatusT(UNKNOWN_ERROR); |
| 361 | break; |
| 362 | default: |
| 363 | CHECK(!"Should not be here"); |
| 364 | } |
| 365 | |
| 366 | hardware::Parcel *parcel = |
| 367 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); |
| 368 | |
| 369 | status_t err = status.writeToParcel(parcel); |
| 370 | signalExceptionForError(env, err); |
| 371 | } |
| 372 | |
| 373 | static void JHwParcel_native_verifySuccess(JNIEnv *env, jobject thiz) { |
| 374 | using hardware::Status; |
| 375 | |
| 376 | hardware::Parcel *parcel = |
| 377 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); |
| 378 | |
| 379 | Status status; |
| 380 | status_t err = status.readFromParcel(*parcel); |
| 381 | signalExceptionForError(env, err); |
| 382 | } |
| 383 | |
| 384 | static void JHwParcel_native_releaseTemporaryStorage( |
| 385 | JNIEnv *env, jobject thiz) { |
| 386 | JHwParcel::GetNativeContext(env, thiz)->getStorage()->release(env); |
| 387 | } |
| 388 | |
| 389 | static void JHwParcel_native_send(JNIEnv *env, jobject thiz) { |
| 390 | JHwParcel::GetNativeContext(env, thiz)->send(); |
| 391 | } |
| 392 | |
| 393 | static void JHwParcel_native_writeString( |
| 394 | JNIEnv *env, jobject thiz, jstring valObj) { |
| 395 | if (valObj == NULL) { |
| 396 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 397 | return; |
| 398 | } |
| 399 | |
| 400 | sp<JHwParcel> impl = JHwParcel::GetNativeContext(env, thiz); |
| 401 | |
| 402 | const hidl_string *s = |
| 403 | impl->getStorage()->allocTemporaryString(env, valObj); |
| 404 | |
| 405 | hardware::Parcel *parcel = impl->getParcel(); |
| 406 | |
| 407 | size_t parentHandle; |
| 408 | status_t err = parcel->writeBuffer(s, sizeof(*s), &parentHandle); |
| 409 | |
| 410 | if (err == OK) { |
| 411 | err = s->writeEmbeddedToParcel( |
| 412 | parcel, parentHandle, 0 /* parentOffset */); |
| 413 | } |
| 414 | |
| 415 | signalExceptionForError(env, err); |
| 416 | } |
| 417 | |
| 418 | #define DEFINE_PARCEL_ARRAY_WRITER(Suffix,Type) \ |
| 419 | static void JHwParcel_native_write ## Suffix ## Array( \ |
| 420 | JNIEnv *env, jobject thiz, jint size, Type ## Array valObj) { \ |
| 421 | if (valObj == NULL) { \ |
| 422 | jniThrowException(env, "java/lang/NullPointerException", NULL); \ |
| 423 | return; \ |
| 424 | } \ |
| 425 | \ |
| 426 | jsize len = env->GetArrayLength(valObj); \ |
| 427 | \ |
| 428 | if (len != size) { \ |
| 429 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); \ |
| 430 | return; \ |
| 431 | } \ |
| 432 | \ |
| 433 | sp<JHwParcel> impl = JHwParcel::GetNativeContext(env, thiz); \ |
| 434 | \ |
| 435 | const Type *val = \ |
| 436 | impl->getStorage()->allocTemporary ## Suffix ## Array(env, valObj); \ |
| 437 | \ |
| 438 | hardware::Parcel *parcel = impl->getParcel(); \ |
| 439 | \ |
| 440 | size_t parentHandle; \ |
| 441 | status_t err = parcel->writeBuffer( \ |
| 442 | val, size * sizeof(*val), &parentHandle); \ |
| 443 | \ |
| 444 | signalExceptionForError(env, err); \ |
| 445 | } |
| 446 | |
| 447 | #define DEFINE_PARCEL_VECTOR_WRITER(Suffix,Type) \ |
| 448 | static void JHwParcel_native_write ## Suffix ## Vector( \ |
| 449 | JNIEnv *env, jobject thiz, Type ## Array valObj) { \ |
| 450 | if (valObj == NULL) { \ |
| 451 | jniThrowException(env, "java/lang/NullPointerException", NULL); \ |
| 452 | return; \ |
| 453 | } \ |
| 454 | \ |
| 455 | sp<JHwParcel> impl = JHwParcel::GetNativeContext(env, thiz); \ |
| 456 | \ |
| 457 | const hidl_vec<Type> *vec = \ |
| 458 | impl->getStorage()->allocTemporary ## Suffix ## Vector(env, valObj); \ |
| 459 | \ |
| 460 | hardware::Parcel *parcel = impl->getParcel(); \ |
| 461 | \ |
| 462 | size_t parentHandle; \ |
| 463 | status_t err = parcel->writeBuffer(vec, sizeof(*vec), &parentHandle); \ |
| 464 | \ |
| 465 | if (err == OK) { \ |
| 466 | size_t childHandle; \ |
| 467 | \ |
| 468 | err = vec->writeEmbeddedToParcel( \ |
| 469 | parcel, \ |
| 470 | parentHandle, \ |
| 471 | 0 /* parentOffset */, \ |
| 472 | &childHandle); \ |
| 473 | } \ |
| 474 | \ |
| 475 | signalExceptionForError(env, err); \ |
| 476 | } |
| 477 | |
| 478 | DEFINE_PARCEL_ARRAY_WRITER(Int8,jbyte) |
| 479 | DEFINE_PARCEL_ARRAY_WRITER(Int16,jshort) |
| 480 | DEFINE_PARCEL_ARRAY_WRITER(Int32,jint) |
| 481 | DEFINE_PARCEL_ARRAY_WRITER(Int64,jlong) |
| 482 | DEFINE_PARCEL_ARRAY_WRITER(Float,jfloat) |
| 483 | DEFINE_PARCEL_ARRAY_WRITER(Double,jdouble) |
| 484 | |
| 485 | DEFINE_PARCEL_VECTOR_WRITER(Int8,jbyte) |
| 486 | DEFINE_PARCEL_VECTOR_WRITER(Int16,jshort) |
| 487 | DEFINE_PARCEL_VECTOR_WRITER(Int32,jint) |
| 488 | DEFINE_PARCEL_VECTOR_WRITER(Int64,jlong) |
| 489 | DEFINE_PARCEL_VECTOR_WRITER(Float,jfloat) |
| 490 | DEFINE_PARCEL_VECTOR_WRITER(Double,jdouble) |
| 491 | |
| 492 | static void JHwParcel_native_writeStrongBinder( |
| 493 | JNIEnv *env, jobject thiz, jobject binderObj) { |
| 494 | sp<hardware::IBinder> binder; |
| 495 | if (binderObj != NULL) { |
| 496 | ScopedLocalRef<jclass> hwBinderKlass( |
| 497 | env, FindClassOrDie(env, PACKAGE_PATH "/HwBinder")); |
| 498 | |
| 499 | ScopedLocalRef<jclass> hwRemoteBinderKlass( |
| 500 | env, FindClassOrDie(env, PACKAGE_PATH "/HwRemoteBinder")); |
| 501 | |
| 502 | if (env->IsInstanceOf(binderObj, hwBinderKlass.get())) { |
| 503 | binder = JHwBinder::GetNativeContext(env, binderObj); |
| 504 | } else if (env->IsInstanceOf(binderObj, hwRemoteBinderKlass.get())) { |
| 505 | binder = JHwRemoteBinder::GetNativeContext( |
| 506 | env, binderObj)->getBinder(); |
| 507 | } else { |
| 508 | signalExceptionForError(env, INVALID_OPERATION); |
| 509 | return; |
| 510 | } |
| 511 | } |
| 512 | |
| 513 | hardware::Parcel *parcel = |
| 514 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); |
| 515 | |
| 516 | status_t err = parcel->writeStrongBinder(binder); |
| 517 | signalExceptionForError(env, err); |
| 518 | } |
| 519 | |
| 520 | static jstring MakeStringObjFromHidlString(JNIEnv *env, const hidl_string &s) { |
| 521 | String16 utf16String(s.c_str(), s.size()); |
| 522 | |
| 523 | return env->NewString( |
| 524 | reinterpret_cast<const jchar *>(utf16String.string()), |
| 525 | utf16String.size()); |
| 526 | } |
| 527 | |
| 528 | static jstring JHwParcel_native_readString(JNIEnv *env, jobject thiz) { |
| 529 | hardware::Parcel *parcel = |
| 530 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); |
| 531 | |
| 532 | size_t parentHandle; |
| 533 | |
| 534 | const hidl_string *s = static_cast<const hidl_string *>( |
| 535 | parcel->readBuffer(&parentHandle)); |
| 536 | |
| 537 | if (s == NULL) { |
| 538 | signalExceptionForError(env, UNKNOWN_ERROR); |
| 539 | return NULL; |
| 540 | } |
| 541 | |
| 542 | status_t err = const_cast<hidl_string *>(s)->readEmbeddedFromParcel( |
| 543 | *parcel, parentHandle, 0 /* parentOffset */); |
| 544 | |
| 545 | if (err != OK) { |
| 546 | signalExceptionForError(env, err); |
| 547 | return NULL; |
| 548 | } |
| 549 | |
| 550 | return MakeStringObjFromHidlString(env, *s); |
| 551 | } |
| 552 | |
| 553 | #define DEFINE_PARCEL_ARRAY_READER(Suffix,Type,NewType) \ |
| 554 | static Type ## Array JHwParcel_native_read ## Suffix ## Array( \ |
| 555 | JNIEnv *env, jobject thiz, jint size) { \ |
| 556 | hardware::Parcel *parcel = \ |
| 557 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); \ |
| 558 | \ |
| 559 | size_t parentHandle; \ |
| 560 | const Type *val = static_cast<const Type *>( \ |
| 561 | parcel->readBuffer(&parentHandle)); \ |
| 562 | \ |
| 563 | Type ## Array valObj = env->New ## NewType ## Array(size); \ |
| 564 | env->Set ## NewType ## ArrayRegion(valObj, 0, size, val); \ |
| 565 | \ |
| 566 | return valObj; \ |
| 567 | } |
| 568 | |
| 569 | #define DEFINE_PARCEL_VECTOR_READER(Suffix,Type,NewType) \ |
| 570 | static Type ## Array JHwParcel_native_read ## Suffix ## Vector( \ |
| 571 | JNIEnv *env, jobject thiz) { \ |
| 572 | hardware::Parcel *parcel = \ |
| 573 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); \ |
| 574 | \ |
| 575 | size_t parentHandle; \ |
| 576 | \ |
| 577 | const hidl_vec<Type> *vec = \ |
| 578 | (const hidl_vec<Type> *)parcel->readBuffer(&parentHandle); \ |
| 579 | \ |
| 580 | if (vec == NULL) { \ |
| 581 | signalExceptionForError(env, UNKNOWN_ERROR); \ |
| 582 | return NULL; \ |
| 583 | } \ |
| 584 | \ |
| 585 | size_t childHandle; \ |
| 586 | \ |
| 587 | status_t err = const_cast<hidl_vec<Type> *>(vec) \ |
| 588 | ->readEmbeddedFromParcel( \ |
| 589 | *parcel, \ |
| 590 | parentHandle, \ |
| 591 | 0 /* parentOffset */, \ |
| 592 | &childHandle); \ |
| 593 | \ |
| 594 | if (err != OK) { \ |
| 595 | signalExceptionForError(env, err); \ |
| 596 | return NULL; \ |
| 597 | } \ |
| 598 | \ |
| 599 | Type ## Array valObj = env->New ## NewType ## Array(vec->size()); \ |
| 600 | env->Set ## NewType ## ArrayRegion(valObj, 0, vec->size(), &(*vec)[0]); \ |
| 601 | \ |
| 602 | return valObj; \ |
| 603 | } |
| 604 | |
| 605 | DEFINE_PARCEL_ARRAY_READER(Int8,jbyte,Byte) |
| 606 | DEFINE_PARCEL_ARRAY_READER(Int16,jshort,Short) |
| 607 | DEFINE_PARCEL_ARRAY_READER(Int32,jint,Int) |
| 608 | DEFINE_PARCEL_ARRAY_READER(Int64,jlong,Long) |
| 609 | DEFINE_PARCEL_ARRAY_READER(Float,jfloat,Float) |
| 610 | DEFINE_PARCEL_ARRAY_READER(Double,jdouble,Double) |
| 611 | |
| 612 | DEFINE_PARCEL_VECTOR_READER(Int8,jbyte,Byte) |
| 613 | DEFINE_PARCEL_VECTOR_READER(Int16,jshort,Short) |
| 614 | DEFINE_PARCEL_VECTOR_READER(Int32,jint,Int) |
| 615 | DEFINE_PARCEL_VECTOR_READER(Int64,jlong,Long) |
| 616 | DEFINE_PARCEL_VECTOR_READER(Float,jfloat,Float) |
| 617 | DEFINE_PARCEL_VECTOR_READER(Double,jdouble,Double) |
| 618 | |
| 619 | static jobjectArray MakeStringArray( |
| 620 | JNIEnv *env, const hidl_string *array, size_t size) { |
| 621 | ScopedLocalRef<jclass> stringKlass( |
| 622 | env, |
| 623 | env->FindClass("java/lang/String")); |
| 624 | |
| 625 | // XXX Why can't I use ScopedLocalRef<> for the arrayObj and the stringObjs? |
| 626 | |
| 627 | jobjectArray arrayObj = env->NewObjectArray(size, stringKlass.get(), NULL); |
| 628 | |
| 629 | for (size_t i = 0; i < size; ++i) { |
| 630 | jstring stringObj = MakeStringObjFromHidlString(env, array[i]); |
| 631 | |
| 632 | env->SetObjectArrayElement( |
| 633 | arrayObj, |
| 634 | i, |
| 635 | stringObj); |
| 636 | } |
| 637 | |
| 638 | return arrayObj; |
| 639 | } |
| 640 | |
| 641 | static jobjectArray JHwParcel_native_readStringArray( |
| 642 | JNIEnv *env, jobject thiz, jint size) { |
| 643 | hardware::Parcel *parcel = |
| 644 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); |
| 645 | |
| 646 | size_t parentHandle; |
| 647 | const hidl_string *val = static_cast<const hidl_string *>( |
| 648 | parcel->readBuffer(&parentHandle)); |
| 649 | |
| 650 | if (val == NULL) { |
| 651 | signalExceptionForError(env, UNKNOWN_ERROR); |
| 652 | return NULL; |
| 653 | } |
| 654 | |
| 655 | status_t err = OK; |
| 656 | for (jint i = 0; (err == OK) && (i < size); ++i) { |
| 657 | err = const_cast<hidl_string *>(&val[i]) |
| 658 | ->readEmbeddedFromParcel( |
| 659 | *parcel, |
| 660 | parentHandle, |
| 661 | i * sizeof(hidl_string)); |
| 662 | } |
| 663 | |
| 664 | if (err != OK) { |
| 665 | signalExceptionForError(env, err); |
| 666 | return NULL; |
| 667 | } |
| 668 | |
| 669 | return MakeStringArray(env, val, size); |
| 670 | } |
| 671 | |
| 672 | static void JHwParcel_native_writeStringArray( |
| 673 | JNIEnv *env, jobject thiz, jint size, jobjectArray arrayObj) { |
| 674 | if (arrayObj == NULL) { |
| 675 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 676 | return; |
| 677 | } |
| 678 | |
| 679 | jsize len = env->GetArrayLength(arrayObj); |
| 680 | |
| 681 | if (len != size) { |
| 682 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 683 | return; |
| 684 | } |
| 685 | |
| 686 | sp<JHwParcel> impl = JHwParcel::GetNativeContext(env, thiz); |
| 687 | |
| 688 | hidl_string *strings = impl->getStorage()->allocStringArray(len); |
| 689 | |
| 690 | for (jsize i = 0; i < len; ++i) { |
| 691 | ScopedLocalRef<jstring> stringObj( |
| 692 | env, |
| 693 | (jstring)env->GetObjectArrayElement(arrayObj, i)); |
| 694 | |
| 695 | const hidl_string *s = |
| 696 | impl->getStorage()->allocTemporaryString(env, stringObj.get()); |
| 697 | |
| 698 | strings[i].setToExternal(s->c_str(), s->size()); |
| 699 | } |
| 700 | |
| 701 | hardware::Parcel *parcel = impl->getParcel(); |
| 702 | |
| 703 | size_t parentHandle; |
| 704 | status_t err = parcel->writeBuffer( |
| 705 | strings, sizeof(hidl_string) * len, &parentHandle); |
| 706 | |
| 707 | for (jsize i = 0; (err == OK) && (i < len); ++i) { |
| 708 | err = strings[i].writeEmbeddedToParcel( |
| 709 | parcel, parentHandle, i * sizeof(hidl_string)); |
| 710 | } |
| 711 | |
| 712 | signalExceptionForError(env, err); |
| 713 | } |
| 714 | |
| 715 | static jobjectArray JHwParcel_native_readStringVector( |
| 716 | JNIEnv *env, jobject thiz) { |
| 717 | typedef hidl_vec<hidl_string> string_vec; |
| 718 | |
| 719 | hardware::Parcel *parcel = |
| 720 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); |
| 721 | |
| 722 | size_t parentHandle; |
| 723 | |
| 724 | const string_vec *vec= |
| 725 | (const string_vec *)parcel->readBuffer(&parentHandle); |
| 726 | |
| 727 | if (vec == NULL) { |
| 728 | signalExceptionForError(env, UNKNOWN_ERROR); |
| 729 | return NULL; |
| 730 | } |
| 731 | |
| 732 | size_t childHandle; |
| 733 | status_t err = const_cast<string_vec *>(vec)->readEmbeddedFromParcel( |
| 734 | *parcel, parentHandle, 0 /* parentOffset */, &childHandle); |
| 735 | |
| 736 | for (size_t i = 0; (err == OK) && (i < vec->size()); ++i) { |
| 737 | err = const_cast<hidl_vec<hidl_string> *>(vec) |
| 738 | ->readEmbeddedFromParcel( |
| 739 | *parcel, |
| 740 | childHandle, |
| 741 | i * sizeof(hidl_string), |
| 742 | nullptr /* childHandle */); |
| 743 | } |
| 744 | |
| 745 | if (err != OK) { |
| 746 | signalExceptionForError(env, err); |
| 747 | return NULL; |
| 748 | } |
| 749 | |
| 750 | return MakeStringArray(env, &(*vec)[0], vec->size()); |
| 751 | } |
| 752 | |
| 753 | static void JHwParcel_native_writeStringVector( |
| 754 | JNIEnv *env, jobject thiz, jobjectArray arrayObj) { |
| 755 | typedef hidl_vec<hidl_string> string_vec; |
| 756 | |
| 757 | if (arrayObj == NULL) { |
| 758 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 759 | return; |
| 760 | } |
| 761 | |
| 762 | jsize len = env->GetArrayLength(arrayObj); |
| 763 | |
| 764 | sp<JHwParcel> impl = JHwParcel::GetNativeContext(env, thiz); |
| 765 | |
| 766 | string_vec *vec = |
| 767 | (string_vec *)impl->getStorage()->allocTemporaryStorage( |
| 768 | sizeof(string_vec)); |
| 769 | |
| 770 | hidl_string *strings = impl->getStorage()->allocStringArray(len); |
| 771 | vec->setToExternal(strings, len); |
| 772 | |
| 773 | for (jsize i = 0; i < len; ++i) { |
| 774 | ScopedLocalRef<jstring> stringObj( |
| 775 | env, |
| 776 | (jstring)env->GetObjectArrayElement(arrayObj, i)); |
| 777 | |
| 778 | const hidl_string *s = |
| 779 | impl->getStorage()->allocTemporaryString(env, stringObj.get()); |
| 780 | |
| 781 | strings[i].setToExternal(s->c_str(), s->size()); |
| 782 | } |
| 783 | |
| 784 | hardware::Parcel *parcel = impl->getParcel(); |
| 785 | |
| 786 | size_t parentHandle; |
| 787 | status_t err = parcel->writeBuffer(vec, sizeof(*vec), &parentHandle); |
| 788 | |
| 789 | if (err == OK) { |
| 790 | size_t childHandle; |
| 791 | err = vec->writeEmbeddedToParcel( |
| 792 | parcel, |
| 793 | parentHandle, |
| 794 | 0 /* parentOffset */, |
| 795 | &childHandle); |
| 796 | |
| 797 | for (size_t i = 0; (err == OK) && (i < vec->size()); ++i) { |
| 798 | err = (*vec)[i].writeEmbeddedToParcel( |
| 799 | parcel, |
| 800 | childHandle, |
| 801 | i * sizeof(hidl_string)); |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | signalExceptionForError(env, err); |
| 806 | } |
| 807 | |
| 808 | static jobject JHwParcel_native_readStrongBinder(JNIEnv *env, jobject thiz) { |
| 809 | hardware::Parcel *parcel = |
| 810 | JHwParcel::GetNativeContext(env, thiz)->getParcel(); |
| 811 | |
| 812 | sp<hardware::IBinder> binder = parcel->readStrongBinder(); |
| 813 | |
| 814 | if (binder == NULL) { |
| 815 | return NULL; |
| 816 | } |
| 817 | |
| 818 | return JHwRemoteBinder::NewObject(env, binder); |
| 819 | } |
| 820 | |
| 821 | static JNINativeMethod gMethods[] = { |
| 822 | { "native_init", "()J", (void *)JHwParcel_native_init }, |
| 823 | { "native_setup", "(Z)V", (void *)JHwParcel_native_setup }, |
| 824 | |
| 825 | { "writeInterfaceToken", "(Ljava/lang/String;)V", |
| 826 | (void *)JHwParcel_native_writeInterfaceToken }, |
| 827 | |
| 828 | { "writeInt8", "(B)V", (void *)JHwParcel_native_writeInt8 }, |
| 829 | { "writeInt16", "(S)V", (void *)JHwParcel_native_writeInt16 }, |
| 830 | { "writeInt32", "(I)V", (void *)JHwParcel_native_writeInt32 }, |
| 831 | { "writeInt64", "(J)V", (void *)JHwParcel_native_writeInt64 }, |
| 832 | { "writeFloat", "(F)V", (void *)JHwParcel_native_writeFloat }, |
| 833 | { "writeDouble", "(D)V", (void *)JHwParcel_native_writeDouble }, |
| 834 | |
| 835 | { "writeString", "(Ljava/lang/String;)V", |
| 836 | (void *)JHwParcel_native_writeString }, |
| 837 | |
| 838 | { "writeInt8Array", "(I[B)V", (void *)JHwParcel_native_writeInt8Array }, |
| 839 | { "writeInt8Vector", "([B)V", (void *)JHwParcel_native_writeInt8Vector }, |
| 840 | { "writeInt16Array", "(I[S)V", (void *)JHwParcel_native_writeInt16Array }, |
| 841 | { "writeInt16Vector", "([S)V", (void *)JHwParcel_native_writeInt16Vector }, |
| 842 | { "writeInt32Array", "(I[I)V", (void *)JHwParcel_native_writeInt32Array }, |
| 843 | { "writeInt32Vector", "([I)V", (void *)JHwParcel_native_writeInt32Vector }, |
| 844 | { "writeInt64Array", "(I[J)V", (void *)JHwParcel_native_writeInt64Array }, |
| 845 | { "writeInt64Vector", "([J)V", (void *)JHwParcel_native_writeInt64Vector }, |
| 846 | { "writeFloatArray", "(I[F)V", (void *)JHwParcel_native_writeFloatArray }, |
| 847 | { "writeFloatVector", "([F)V", (void *)JHwParcel_native_writeFloatVector }, |
| 848 | { "writeDoubleArray", "(I[D)V", (void *)JHwParcel_native_writeDoubleArray }, |
| 849 | |
| 850 | { "writeDoubleVector", "([D)V", |
| 851 | (void *)JHwParcel_native_writeDoubleVector }, |
| 852 | |
| 853 | { "writeStringArray", "(I[Ljava/lang/String;)V", |
| 854 | (void *)JHwParcel_native_writeStringArray }, |
| 855 | |
| 856 | { "writeStringVector", "([Ljava/lang/String;)V", |
| 857 | (void *)JHwParcel_native_writeStringVector }, |
| 858 | |
| 859 | { "writeStrongBinder", "(L" PACKAGE_PATH "/IHwBinder;)V", |
| 860 | (void *)JHwParcel_native_writeStrongBinder }, |
| 861 | |
| 862 | { "enforceInterface", "(Ljava/lang/String;)V", |
| 863 | (void *)JHwParcel_native_enforceInterface }, |
| 864 | |
| 865 | { "readInt8", "()B", (void *)JHwParcel_native_readInt8 }, |
| 866 | { "readInt16", "()S", (void *)JHwParcel_native_readInt16 }, |
| 867 | { "readInt32", "()I", (void *)JHwParcel_native_readInt32 }, |
| 868 | { "readInt64", "()J", (void *)JHwParcel_native_readInt64 }, |
| 869 | { "readFloat", "()F", (void *)JHwParcel_native_readFloat }, |
| 870 | { "readDouble", "()D", (void *)JHwParcel_native_readDouble }, |
| 871 | |
| 872 | { "readString", "()Ljava/lang/String;", |
| 873 | (void *)JHwParcel_native_readString }, |
| 874 | |
| 875 | { "readInt8Array", "(I)[B", (void *)JHwParcel_native_readInt8Array }, |
| 876 | { "readInt8Vector", "()[B", (void *)JHwParcel_native_readInt8Vector }, |
| 877 | { "readInt16Array", "(I)[S", (void *)JHwParcel_native_readInt16Array }, |
| 878 | { "readInt16Vector", "()[S", (void *)JHwParcel_native_readInt16Vector }, |
| 879 | { "readInt32Array", "(I)[I", (void *)JHwParcel_native_readInt32Array }, |
| 880 | { "readInt32Vector", "()[I", (void *)JHwParcel_native_readInt32Vector }, |
| 881 | { "readInt64Array", "(I)[J", (void *)JHwParcel_native_readInt64Array }, |
| 882 | { "readInt64Vector", "()[J", (void *)JHwParcel_native_readInt64Vector }, |
| 883 | { "readFloatArray", "(I)[F", (void *)JHwParcel_native_readFloatArray }, |
| 884 | { "readFloatVector", "()[F", (void *)JHwParcel_native_readFloatVector }, |
| 885 | { "readDoubleArray", "(I)[D", (void *)JHwParcel_native_readDoubleArray }, |
| 886 | { "readDoubleVector", "()[D", (void *)JHwParcel_native_readDoubleVector }, |
| 887 | |
| 888 | { "readStringArray", "(I)[Ljava/lang/String;", |
| 889 | (void *)JHwParcel_native_readStringArray }, |
| 890 | |
| 891 | { "readStringVector", "()[Ljava/lang/String;", |
| 892 | (void *)JHwParcel_native_readStringVector }, |
| 893 | |
| 894 | { "readStrongBinder", "()L" PACKAGE_PATH "/IHwBinder;", |
| 895 | (void *)JHwParcel_native_readStrongBinder }, |
| 896 | |
| 897 | { "writeStatus", "(I)V", (void *)JHwParcel_native_writeStatus }, |
| 898 | |
| 899 | { "verifySuccess", "()V", (void *)JHwParcel_native_verifySuccess }, |
| 900 | |
| 901 | { "releaseTemporaryStorage", "()V", |
| 902 | (void *)JHwParcel_native_releaseTemporaryStorage }, |
| 903 | |
| 904 | { "send", "()V", (void *)JHwParcel_native_send }, |
| 905 | }; |
| 906 | |
| 907 | namespace android { |
| 908 | |
| 909 | int register_android_os_HwParcel(JNIEnv *env) { |
| 910 | return RegisterMethodsOrDie(env, CLASS_PATH, gMethods, NELEM(gMethods)); |
| 911 | } |
| 912 | |
| 913 | } // namespace android |