The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006 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 "JavaBinder" |
| 18 | //#define LOG_NDEBUG 0 |
| 19 | |
| 20 | #include "android_util_Binder.h" |
| 21 | #include "JNIHelp.h" |
| 22 | |
| 23 | #include <fcntl.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 24 | #include <stdio.h> |
Brad Fitzpatrick | ad8fd28 | 2010-03-25 02:01:32 -0700 | [diff] [blame] | 25 | #include <sys/stat.h> |
Brad Fitzpatrick | ad8fd28 | 2010-03-25 02:01:32 -0700 | [diff] [blame] | 26 | #include <sys/types.h> |
Brad Fitzpatrick | 8f26b32 | 2010-03-25 00:25:37 -0700 | [diff] [blame] | 27 | #include <unistd.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 28 | |
| 29 | #include <utils/Atomic.h> |
Mathias Agopian | 0795272 | 2009-05-19 19:08:10 -0700 | [diff] [blame] | 30 | #include <binder/IInterface.h> |
| 31 | #include <binder/IPCThreadState.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 32 | #include <utils/Log.h> |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 33 | #include <utils/SystemClock.h> |
| 34 | #include <cutils/logger.h> |
Mathias Agopian | 0795272 | 2009-05-19 19:08:10 -0700 | [diff] [blame] | 35 | #include <binder/Parcel.h> |
| 36 | #include <binder/ProcessState.h> |
| 37 | #include <binder/IServiceManager.h> |
Brad Fitzpatrick | 5348c01 | 2010-03-25 12:43:56 -0700 | [diff] [blame^] | 38 | #include <utils/threads.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 39 | |
| 40 | #include <android_runtime/AndroidRuntime.h> |
| 41 | |
| 42 | //#undef LOGV |
| 43 | //#define LOGV(...) fprintf(stderr, __VA_ARGS__) |
| 44 | |
| 45 | using namespace android; |
| 46 | |
| 47 | // ---------------------------------------------------------------------------- |
| 48 | |
| 49 | static struct bindernative_offsets_t |
| 50 | { |
| 51 | // Class state. |
| 52 | jclass mClass; |
| 53 | jmethodID mExecTransact; |
| 54 | |
| 55 | // Object state. |
| 56 | jfieldID mObject; |
| 57 | |
| 58 | } gBinderOffsets; |
| 59 | |
| 60 | // ---------------------------------------------------------------------------- |
| 61 | |
| 62 | static struct binderinternal_offsets_t |
| 63 | { |
| 64 | // Class state. |
| 65 | jclass mClass; |
| 66 | jmethodID mForceGc; |
| 67 | |
| 68 | } gBinderInternalOffsets; |
| 69 | |
| 70 | // ---------------------------------------------------------------------------- |
| 71 | |
| 72 | static struct debug_offsets_t |
| 73 | { |
| 74 | // Class state. |
| 75 | jclass mClass; |
| 76 | |
| 77 | } gDebugOffsets; |
| 78 | |
| 79 | // ---------------------------------------------------------------------------- |
| 80 | |
| 81 | static struct weakreference_offsets_t |
| 82 | { |
| 83 | // Class state. |
| 84 | jclass mClass; |
| 85 | jmethodID mGet; |
| 86 | |
| 87 | } gWeakReferenceOffsets; |
| 88 | |
| 89 | static struct error_offsets_t |
| 90 | { |
| 91 | jclass mClass; |
| 92 | } gErrorOffsets; |
| 93 | |
| 94 | // ---------------------------------------------------------------------------- |
| 95 | |
| 96 | static struct binderproxy_offsets_t |
| 97 | { |
| 98 | // Class state. |
| 99 | jclass mClass; |
| 100 | jmethodID mConstructor; |
| 101 | jmethodID mSendDeathNotice; |
| 102 | |
| 103 | // Object state. |
| 104 | jfieldID mObject; |
| 105 | jfieldID mSelf; |
| 106 | |
| 107 | } gBinderProxyOffsets; |
| 108 | |
| 109 | // ---------------------------------------------------------------------------- |
| 110 | |
| 111 | static struct parcel_offsets_t |
| 112 | { |
| 113 | jfieldID mObject; |
| 114 | jfieldID mOwnObject; |
| 115 | } gParcelOffsets; |
| 116 | |
| 117 | static struct log_offsets_t |
| 118 | { |
| 119 | // Class state. |
| 120 | jclass mClass; |
| 121 | jmethodID mLogE; |
| 122 | } gLogOffsets; |
| 123 | |
| 124 | static struct file_descriptor_offsets_t |
| 125 | { |
| 126 | jclass mClass; |
| 127 | jmethodID mConstructor; |
| 128 | jfieldID mDescriptor; |
| 129 | } gFileDescriptorOffsets; |
| 130 | |
| 131 | static struct parcel_file_descriptor_offsets_t |
| 132 | { |
| 133 | jclass mClass; |
| 134 | jmethodID mConstructor; |
| 135 | } gParcelFileDescriptorOffsets; |
| 136 | |
| 137 | // **************************************************************************** |
| 138 | // **************************************************************************** |
| 139 | // **************************************************************************** |
| 140 | |
| 141 | static volatile int32_t gNumRefsCreated = 0; |
| 142 | static volatile int32_t gNumProxyRefs = 0; |
| 143 | static volatile int32_t gNumLocalRefs = 0; |
| 144 | static volatile int32_t gNumDeathRefs = 0; |
| 145 | |
| 146 | static void incRefsCreated(JNIEnv* env) |
| 147 | { |
| 148 | int old = android_atomic_inc(&gNumRefsCreated); |
| 149 | if (old == 200) { |
| 150 | android_atomic_and(0, &gNumRefsCreated); |
| 151 | env->CallStaticVoidMethod(gBinderInternalOffsets.mClass, |
| 152 | gBinderInternalOffsets.mForceGc); |
| 153 | } else { |
| 154 | LOGV("Now have %d binder ops", old); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | static JavaVM* jnienv_to_javavm(JNIEnv* env) |
| 159 | { |
| 160 | JavaVM* vm; |
| 161 | return env->GetJavaVM(&vm) >= 0 ? vm : NULL; |
| 162 | } |
| 163 | |
| 164 | static JNIEnv* javavm_to_jnienv(JavaVM* vm) |
| 165 | { |
| 166 | JNIEnv* env; |
| 167 | return vm->GetEnv((void **)&env, JNI_VERSION_1_4) >= 0 ? env : NULL; |
| 168 | } |
| 169 | |
| 170 | static void report_exception(JNIEnv* env, jthrowable excep, const char* msg) |
| 171 | { |
| 172 | env->ExceptionClear(); |
| 173 | |
| 174 | jstring tagstr = env->NewStringUTF(LOG_TAG); |
| 175 | jstring msgstr = env->NewStringUTF(msg); |
| 176 | |
| 177 | if ((tagstr == NULL) || (msgstr == NULL)) { |
| 178 | env->ExceptionClear(); /* assume exception (OOM?) was thrown */ |
| 179 | LOGE("Unable to call Log.e()\n"); |
| 180 | LOGE("%s", msg); |
| 181 | goto bail; |
| 182 | } |
| 183 | |
| 184 | env->CallStaticIntMethod( |
| 185 | gLogOffsets.mClass, gLogOffsets.mLogE, tagstr, msgstr, excep); |
| 186 | if (env->ExceptionCheck()) { |
| 187 | /* attempting to log the failure has failed */ |
| 188 | LOGW("Failed trying to log exception, msg='%s'\n", msg); |
| 189 | env->ExceptionClear(); |
| 190 | } |
| 191 | |
| 192 | if (env->IsInstanceOf(excep, gErrorOffsets.mClass)) { |
| 193 | /* |
| 194 | * It's an Error: Reraise the exception, detach this thread, and |
| 195 | * wait for the fireworks. Die even more blatantly after a minute |
| 196 | * if the gentler attempt doesn't do the trick. |
| 197 | * |
| 198 | * The GetJavaVM function isn't on the "approved" list of JNI calls |
| 199 | * that can be made while an exception is pending, so we want to |
| 200 | * get the VM ptr, throw the exception, and then detach the thread. |
| 201 | */ |
| 202 | JavaVM* vm = jnienv_to_javavm(env); |
| 203 | env->Throw(excep); |
| 204 | vm->DetachCurrentThread(); |
| 205 | sleep(60); |
| 206 | LOGE("Forcefully exiting"); |
| 207 | exit(1); |
| 208 | *((int *) 1) = 1; |
| 209 | } |
| 210 | |
| 211 | bail: |
| 212 | /* discard local refs created for us by VM */ |
| 213 | env->DeleteLocalRef(tagstr); |
| 214 | env->DeleteLocalRef(msgstr); |
| 215 | } |
| 216 | |
| 217 | class JavaBBinderHolder; |
| 218 | |
| 219 | class JavaBBinder : public BBinder |
| 220 | { |
| 221 | public: |
| 222 | JavaBBinder(JNIEnv* env, jobject object) |
| 223 | : mVM(jnienv_to_javavm(env)), mObject(env->NewGlobalRef(object)) |
| 224 | { |
| 225 | LOGV("Creating JavaBBinder %p\n", this); |
| 226 | android_atomic_inc(&gNumLocalRefs); |
| 227 | incRefsCreated(env); |
| 228 | } |
| 229 | |
| 230 | bool checkSubclass(const void* subclassID) const |
| 231 | { |
| 232 | return subclassID == &gBinderOffsets; |
| 233 | } |
| 234 | |
| 235 | jobject object() const |
| 236 | { |
| 237 | return mObject; |
| 238 | } |
| 239 | |
| 240 | protected: |
| 241 | virtual ~JavaBBinder() |
| 242 | { |
| 243 | LOGV("Destroying JavaBBinder %p\n", this); |
| 244 | android_atomic_dec(&gNumLocalRefs); |
| 245 | JNIEnv* env = javavm_to_jnienv(mVM); |
| 246 | env->DeleteGlobalRef(mObject); |
| 247 | } |
| 248 | |
| 249 | virtual status_t onTransact( |
| 250 | uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags = 0) |
| 251 | { |
| 252 | JNIEnv* env = javavm_to_jnienv(mVM); |
| 253 | |
| 254 | LOGV("onTransact() on %p calling object %p in env %p vm %p\n", this, mObject, env, mVM); |
| 255 | |
| 256 | //printf("Transact from %p to Java code sending: ", this); |
| 257 | //data.print(); |
| 258 | //printf("\n"); |
| 259 | jboolean res = env->CallBooleanMethod(mObject, gBinderOffsets.mExecTransact, |
| 260 | code, (int32_t)&data, (int32_t)reply, flags); |
| 261 | jthrowable excep = env->ExceptionOccurred(); |
| 262 | if (excep) { |
| 263 | report_exception(env, excep, |
| 264 | "*** Uncaught remote exception! " |
| 265 | "(Exceptions are not yet supported across processes.)"); |
| 266 | res = JNI_FALSE; |
| 267 | |
| 268 | /* clean up JNI local ref -- we don't return to Java code */ |
| 269 | env->DeleteLocalRef(excep); |
| 270 | } |
| 271 | |
| 272 | //aout << "onTransact to Java code; result=" << res << endl |
| 273 | // << "Transact from " << this << " to Java code returning " |
| 274 | // << reply << ": " << *reply << endl; |
| 275 | return res != JNI_FALSE ? NO_ERROR : UNKNOWN_TRANSACTION; |
| 276 | } |
| 277 | |
| 278 | virtual status_t dump(int fd, const Vector<String16>& args) |
| 279 | { |
| 280 | return 0; |
| 281 | } |
| 282 | |
| 283 | private: |
| 284 | JavaVM* const mVM; |
| 285 | jobject const mObject; |
| 286 | }; |
| 287 | |
| 288 | // ---------------------------------------------------------------------------- |
| 289 | |
| 290 | class JavaBBinderHolder : public RefBase |
| 291 | { |
| 292 | public: |
| 293 | JavaBBinderHolder(JNIEnv* env, jobject object) |
| 294 | : mObject(object) |
| 295 | { |
| 296 | LOGV("Creating JavaBBinderHolder for Object %p\n", object); |
| 297 | } |
| 298 | ~JavaBBinderHolder() |
| 299 | { |
| 300 | LOGV("Destroying JavaBBinderHolder for Object %p\n", mObject); |
| 301 | } |
| 302 | |
| 303 | sp<JavaBBinder> get(JNIEnv* env) |
| 304 | { |
| 305 | AutoMutex _l(mLock); |
| 306 | sp<JavaBBinder> b = mBinder.promote(); |
| 307 | if (b == NULL) { |
| 308 | b = new JavaBBinder(env, mObject); |
| 309 | mBinder = b; |
| 310 | LOGV("Creating JavaBinder %p (refs %p) for Object %p, weakCount=%d\n", |
| 311 | b.get(), b->getWeakRefs(), mObject, b->getWeakRefs()->getWeakCount()); |
| 312 | } |
| 313 | |
| 314 | return b; |
| 315 | } |
| 316 | |
| 317 | sp<JavaBBinder> getExisting() |
| 318 | { |
| 319 | AutoMutex _l(mLock); |
| 320 | return mBinder.promote(); |
| 321 | } |
| 322 | |
| 323 | private: |
| 324 | Mutex mLock; |
| 325 | jobject mObject; |
| 326 | wp<JavaBBinder> mBinder; |
| 327 | }; |
| 328 | |
| 329 | // ---------------------------------------------------------------------------- |
| 330 | |
| 331 | class JavaDeathRecipient : public IBinder::DeathRecipient |
| 332 | { |
| 333 | public: |
| 334 | JavaDeathRecipient(JNIEnv* env, jobject object) |
| 335 | : mVM(jnienv_to_javavm(env)), mObject(env->NewGlobalRef(object)), |
| 336 | mHoldsRef(true) |
| 337 | { |
| 338 | incStrong(this); |
| 339 | android_atomic_inc(&gNumDeathRefs); |
| 340 | incRefsCreated(env); |
| 341 | } |
| 342 | |
| 343 | void binderDied(const wp<IBinder>& who) |
| 344 | { |
| 345 | JNIEnv* env = javavm_to_jnienv(mVM); |
| 346 | |
| 347 | LOGV("Receiving binderDied() on JavaDeathRecipient %p\n", this); |
| 348 | |
| 349 | env->CallStaticVoidMethod(gBinderProxyOffsets.mClass, |
| 350 | gBinderProxyOffsets.mSendDeathNotice, mObject); |
| 351 | jthrowable excep = env->ExceptionOccurred(); |
| 352 | if (excep) { |
| 353 | report_exception(env, excep, |
| 354 | "*** Uncaught exception returned from death notification!"); |
| 355 | } |
| 356 | |
| 357 | clearReference(); |
| 358 | } |
| 359 | |
| 360 | void clearReference() |
| 361 | { |
| 362 | bool release = false; |
| 363 | mLock.lock(); |
| 364 | if (mHoldsRef) { |
| 365 | mHoldsRef = false; |
| 366 | release = true; |
| 367 | } |
| 368 | mLock.unlock(); |
| 369 | if (release) { |
| 370 | decStrong(this); |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | protected: |
| 375 | virtual ~JavaDeathRecipient() |
| 376 | { |
| 377 | //LOGI("Removing death ref: recipient=%p\n", mObject); |
| 378 | android_atomic_dec(&gNumDeathRefs); |
| 379 | JNIEnv* env = javavm_to_jnienv(mVM); |
| 380 | env->DeleteGlobalRef(mObject); |
| 381 | } |
| 382 | |
| 383 | private: |
| 384 | JavaVM* const mVM; |
| 385 | jobject const mObject; |
| 386 | Mutex mLock; |
| 387 | bool mHoldsRef; |
| 388 | }; |
| 389 | |
| 390 | // ---------------------------------------------------------------------------- |
| 391 | |
| 392 | namespace android { |
| 393 | |
| 394 | static void proxy_cleanup(const void* id, void* obj, void* cleanupCookie) |
| 395 | { |
| 396 | android_atomic_dec(&gNumProxyRefs); |
| 397 | JNIEnv* env = javavm_to_jnienv((JavaVM*)cleanupCookie); |
| 398 | env->DeleteGlobalRef((jobject)obj); |
| 399 | } |
| 400 | |
| 401 | static Mutex mProxyLock; |
| 402 | |
| 403 | jobject javaObjectForIBinder(JNIEnv* env, const sp<IBinder>& val) |
| 404 | { |
| 405 | if (val == NULL) return NULL; |
| 406 | |
| 407 | if (val->checkSubclass(&gBinderOffsets)) { |
| 408 | // One of our own! |
| 409 | jobject object = static_cast<JavaBBinder*>(val.get())->object(); |
| 410 | //printf("objectForBinder %p: it's our own %p!\n", val.get(), object); |
| 411 | return object; |
| 412 | } |
| 413 | |
| 414 | // For the rest of the function we will hold this lock, to serialize |
| 415 | // looking/creation of Java proxies for native Binder proxies. |
| 416 | AutoMutex _l(mProxyLock); |
| 417 | |
| 418 | // Someone else's... do we know about it? |
| 419 | jobject object = (jobject)val->findObject(&gBinderProxyOffsets); |
| 420 | if (object != NULL) { |
| 421 | jobject res = env->CallObjectMethod(object, gWeakReferenceOffsets.mGet); |
| 422 | if (res != NULL) { |
| 423 | LOGV("objectForBinder %p: found existing %p!\n", val.get(), res); |
| 424 | return res; |
| 425 | } |
| 426 | LOGV("Proxy object %p of IBinder %p no longer in working set!!!", object, val.get()); |
| 427 | android_atomic_dec(&gNumProxyRefs); |
| 428 | val->detachObject(&gBinderProxyOffsets); |
| 429 | env->DeleteGlobalRef(object); |
| 430 | } |
| 431 | |
| 432 | object = env->NewObject(gBinderProxyOffsets.mClass, gBinderProxyOffsets.mConstructor); |
| 433 | if (object != NULL) { |
| 434 | LOGV("objectForBinder %p: created new %p!\n", val.get(), object); |
| 435 | // The proxy holds a reference to the native object. |
| 436 | env->SetIntField(object, gBinderProxyOffsets.mObject, (int)val.get()); |
| 437 | val->incStrong(object); |
| 438 | |
| 439 | // The native object needs to hold a weak reference back to the |
| 440 | // proxy, so we can retrieve the same proxy if it is still active. |
| 441 | jobject refObject = env->NewGlobalRef( |
| 442 | env->GetObjectField(object, gBinderProxyOffsets.mSelf)); |
| 443 | val->attachObject(&gBinderProxyOffsets, refObject, |
| 444 | jnienv_to_javavm(env), proxy_cleanup); |
| 445 | |
| 446 | // Note that a new object reference has been created. |
| 447 | android_atomic_inc(&gNumProxyRefs); |
| 448 | incRefsCreated(env); |
| 449 | } |
| 450 | |
| 451 | return object; |
| 452 | } |
| 453 | |
| 454 | sp<IBinder> ibinderForJavaObject(JNIEnv* env, jobject obj) |
| 455 | { |
| 456 | if (obj == NULL) return NULL; |
| 457 | |
| 458 | if (env->IsInstanceOf(obj, gBinderOffsets.mClass)) { |
| 459 | JavaBBinderHolder* jbh = (JavaBBinderHolder*) |
| 460 | env->GetIntField(obj, gBinderOffsets.mObject); |
| 461 | return jbh != NULL ? jbh->get(env) : NULL; |
| 462 | } |
| 463 | |
| 464 | if (env->IsInstanceOf(obj, gBinderProxyOffsets.mClass)) { |
| 465 | return (IBinder*) |
| 466 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 467 | } |
| 468 | |
| 469 | LOGW("ibinderForJavaObject: %p is not a Binder object", obj); |
| 470 | return NULL; |
| 471 | } |
| 472 | |
| 473 | Parcel* parcelForJavaObject(JNIEnv* env, jobject obj) |
| 474 | { |
| 475 | if (obj) { |
| 476 | Parcel* p = (Parcel*)env->GetIntField(obj, gParcelOffsets.mObject); |
| 477 | if (p != NULL) { |
| 478 | return p; |
| 479 | } |
| 480 | jniThrowException(env, "java/lang/IllegalStateException", "Parcel has been finalized!"); |
| 481 | } |
| 482 | return NULL; |
| 483 | } |
| 484 | |
| 485 | jobject newFileDescriptor(JNIEnv* env, int fd) |
| 486 | { |
| 487 | jobject object = env->NewObject( |
| 488 | gFileDescriptorOffsets.mClass, gFileDescriptorOffsets.mConstructor); |
| 489 | if (object != NULL) { |
| 490 | //LOGI("Created new FileDescriptor %p with fd %d\n", object, fd); |
| 491 | env->SetIntField(object, gFileDescriptorOffsets.mDescriptor, fd); |
| 492 | } |
| 493 | return object; |
| 494 | } |
| 495 | |
| 496 | jobject newParcelFileDescriptor(JNIEnv* env, jobject fileDesc) |
| 497 | { |
| 498 | return env->NewObject( |
| 499 | gParcelFileDescriptorOffsets.mClass, gParcelFileDescriptorOffsets.mConstructor, fileDesc); |
| 500 | } |
| 501 | |
| 502 | void signalExceptionForError(JNIEnv* env, jobject obj, status_t err) |
| 503 | { |
| 504 | switch (err) { |
| 505 | case UNKNOWN_ERROR: |
| 506 | jniThrowException(env, "java/lang/RuntimeException", "Unknown error"); |
| 507 | break; |
| 508 | case NO_MEMORY: |
| 509 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 510 | break; |
| 511 | case INVALID_OPERATION: |
| 512 | jniThrowException(env, "java/lang/UnsupportedOperationException", NULL); |
| 513 | break; |
| 514 | case BAD_VALUE: |
| 515 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 516 | break; |
| 517 | case BAD_INDEX: |
| 518 | jniThrowException(env, "java/lang/IndexOutOfBoundsException", NULL); |
| 519 | break; |
| 520 | case BAD_TYPE: |
| 521 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 522 | break; |
| 523 | case NAME_NOT_FOUND: |
| 524 | jniThrowException(env, "java/util/NoSuchElementException", NULL); |
| 525 | break; |
| 526 | case PERMISSION_DENIED: |
| 527 | jniThrowException(env, "java/lang/SecurityException", NULL); |
| 528 | break; |
| 529 | case NOT_ENOUGH_DATA: |
| 530 | jniThrowException(env, "android/os/ParcelFormatException", "Not enough data"); |
| 531 | break; |
| 532 | case NO_INIT: |
| 533 | jniThrowException(env, "java/lang/RuntimeException", "Not initialized"); |
| 534 | break; |
| 535 | case ALREADY_EXISTS: |
| 536 | jniThrowException(env, "java/lang/RuntimeException", "Item already exists"); |
| 537 | break; |
| 538 | case DEAD_OBJECT: |
| 539 | jniThrowException(env, "android/os/DeadObjectException", NULL); |
| 540 | break; |
| 541 | case UNKNOWN_TRANSACTION: |
| 542 | jniThrowException(env, "java/lang/RuntimeException", "Unknown transaction code"); |
| 543 | break; |
| 544 | case FAILED_TRANSACTION: |
| 545 | LOGE("!!! FAILED BINDER TRANSACTION !!!"); |
| 546 | //jniThrowException(env, "java/lang/OutOfMemoryError", "Binder transaction too large"); |
| 547 | break; |
| 548 | default: |
| 549 | LOGE("Unknown binder error code. 0x%x", err); |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | } |
| 554 | |
| 555 | // ---------------------------------------------------------------------------- |
| 556 | |
| 557 | static jint android_os_Binder_getCallingPid(JNIEnv* env, jobject clazz) |
| 558 | { |
| 559 | return IPCThreadState::self()->getCallingPid(); |
| 560 | } |
| 561 | |
| 562 | static jint android_os_Binder_getCallingUid(JNIEnv* env, jobject clazz) |
| 563 | { |
| 564 | return IPCThreadState::self()->getCallingUid(); |
| 565 | } |
| 566 | |
| 567 | static jlong android_os_Binder_clearCallingIdentity(JNIEnv* env, jobject clazz) |
| 568 | { |
| 569 | return IPCThreadState::self()->clearCallingIdentity(); |
| 570 | } |
| 571 | |
| 572 | static void android_os_Binder_restoreCallingIdentity(JNIEnv* env, jobject clazz, jlong token) |
| 573 | { |
| 574 | IPCThreadState::self()->restoreCallingIdentity(token); |
| 575 | } |
| 576 | |
| 577 | static void android_os_Binder_flushPendingCommands(JNIEnv* env, jobject clazz) |
| 578 | { |
| 579 | IPCThreadState::self()->flushCommands(); |
| 580 | } |
| 581 | |
| 582 | static void android_os_Binder_init(JNIEnv* env, jobject clazz) |
| 583 | { |
| 584 | JavaBBinderHolder* jbh = new JavaBBinderHolder(env, clazz); |
| 585 | if (jbh == NULL) { |
| 586 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 587 | return; |
| 588 | } |
| 589 | LOGV("Java Binder %p: acquiring first ref on holder %p", clazz, jbh); |
| 590 | jbh->incStrong(clazz); |
| 591 | env->SetIntField(clazz, gBinderOffsets.mObject, (int)jbh); |
| 592 | } |
| 593 | |
| 594 | static void android_os_Binder_destroy(JNIEnv* env, jobject clazz) |
| 595 | { |
| 596 | JavaBBinderHolder* jbh = (JavaBBinderHolder*) |
| 597 | env->GetIntField(clazz, gBinderOffsets.mObject); |
Jeff Brown | 582763a | 2010-03-24 18:56:57 -0700 | [diff] [blame] | 598 | if (jbh != NULL) { |
| 599 | env->SetIntField(clazz, gBinderOffsets.mObject, 0); |
| 600 | LOGV("Java Binder %p: removing ref on holder %p", clazz, jbh); |
| 601 | jbh->decStrong(clazz); |
| 602 | } else { |
| 603 | // Encountering an uninitialized binder is harmless. All it means is that |
| 604 | // the Binder was only partially initialized when its finalizer ran and called |
| 605 | // destroy(). The Binder could be partially initialized for several reasons. |
| 606 | // For example, a Binder subclass constructor might have thrown an exception before |
| 607 | // it could delegate to its superclass's constructor. Consequently init() would |
| 608 | // not have been called and the holder pointer would remain NULL. |
| 609 | LOGV("Java Binder %p: ignoring uninitialized binder", clazz); |
| 610 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 611 | } |
| 612 | |
| 613 | // ---------------------------------------------------------------------------- |
| 614 | |
| 615 | static const JNINativeMethod gBinderMethods[] = { |
| 616 | /* name, signature, funcPtr */ |
| 617 | { "getCallingPid", "()I", (void*)android_os_Binder_getCallingPid }, |
| 618 | { "getCallingUid", "()I", (void*)android_os_Binder_getCallingUid }, |
| 619 | { "clearCallingIdentity", "()J", (void*)android_os_Binder_clearCallingIdentity }, |
| 620 | { "restoreCallingIdentity", "(J)V", (void*)android_os_Binder_restoreCallingIdentity }, |
| 621 | { "flushPendingCommands", "()V", (void*)android_os_Binder_flushPendingCommands }, |
| 622 | { "init", "()V", (void*)android_os_Binder_init }, |
| 623 | { "destroy", "()V", (void*)android_os_Binder_destroy } |
| 624 | }; |
| 625 | |
| 626 | const char* const kBinderPathName = "android/os/Binder"; |
| 627 | |
| 628 | static int int_register_android_os_Binder(JNIEnv* env) |
| 629 | { |
| 630 | jclass clazz; |
| 631 | |
| 632 | clazz = env->FindClass(kBinderPathName); |
| 633 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.Binder"); |
| 634 | |
| 635 | gBinderOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 636 | gBinderOffsets.mExecTransact |
| 637 | = env->GetMethodID(clazz, "execTransact", "(IIII)Z"); |
| 638 | assert(gBinderOffsets.mExecTransact); |
| 639 | |
| 640 | gBinderOffsets.mObject |
| 641 | = env->GetFieldID(clazz, "mObject", "I"); |
| 642 | assert(gBinderOffsets.mObject); |
| 643 | |
| 644 | return AndroidRuntime::registerNativeMethods( |
| 645 | env, kBinderPathName, |
| 646 | gBinderMethods, NELEM(gBinderMethods)); |
| 647 | } |
| 648 | |
| 649 | // **************************************************************************** |
| 650 | // **************************************************************************** |
| 651 | // **************************************************************************** |
| 652 | |
| 653 | namespace android { |
| 654 | |
| 655 | jint android_os_Debug_getLocalObjectCount(JNIEnv* env, jobject clazz) |
| 656 | { |
| 657 | return gNumLocalRefs; |
| 658 | } |
| 659 | |
| 660 | jint android_os_Debug_getProxyObjectCount(JNIEnv* env, jobject clazz) |
| 661 | { |
| 662 | return gNumProxyRefs; |
| 663 | } |
| 664 | |
| 665 | jint android_os_Debug_getDeathObjectCount(JNIEnv* env, jobject clazz) |
| 666 | { |
| 667 | return gNumDeathRefs; |
| 668 | } |
| 669 | |
| 670 | } |
| 671 | |
| 672 | // **************************************************************************** |
| 673 | // **************************************************************************** |
| 674 | // **************************************************************************** |
| 675 | |
| 676 | static jobject android_os_BinderInternal_getContextObject(JNIEnv* env, jobject clazz) |
| 677 | { |
| 678 | sp<IBinder> b = ProcessState::self()->getContextObject(NULL); |
| 679 | return javaObjectForIBinder(env, b); |
| 680 | } |
| 681 | |
| 682 | static void android_os_BinderInternal_joinThreadPool(JNIEnv* env, jobject clazz) |
| 683 | { |
| 684 | sp<IBinder> b = ProcessState::self()->getContextObject(NULL); |
| 685 | android::IPCThreadState::self()->joinThreadPool(); |
| 686 | } |
| 687 | |
Dianne Hackborn | 887f355 | 2009-12-07 17:59:37 -0800 | [diff] [blame] | 688 | static void android_os_BinderInternal_disableBackgroundScheduling(JNIEnv* env, |
| 689 | jobject clazz, jboolean disable) |
| 690 | { |
| 691 | IPCThreadState::disableBackgroundScheduling(disable ? true : false); |
| 692 | } |
| 693 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 694 | static void android_os_BinderInternal_handleGc(JNIEnv* env, jobject clazz) |
| 695 | { |
| 696 | LOGV("Gc has executed, clearing binder ops"); |
| 697 | android_atomic_and(0, &gNumRefsCreated); |
| 698 | } |
| 699 | |
| 700 | // ---------------------------------------------------------------------------- |
| 701 | |
| 702 | static const JNINativeMethod gBinderInternalMethods[] = { |
| 703 | /* name, signature, funcPtr */ |
| 704 | { "getContextObject", "()Landroid/os/IBinder;", (void*)android_os_BinderInternal_getContextObject }, |
| 705 | { "joinThreadPool", "()V", (void*)android_os_BinderInternal_joinThreadPool }, |
Dianne Hackborn | 887f355 | 2009-12-07 17:59:37 -0800 | [diff] [blame] | 706 | { "disableBackgroundScheduling", "(Z)V", (void*)android_os_BinderInternal_disableBackgroundScheduling }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 707 | { "handleGc", "()V", (void*)android_os_BinderInternal_handleGc } |
| 708 | }; |
| 709 | |
| 710 | const char* const kBinderInternalPathName = "com/android/internal/os/BinderInternal"; |
| 711 | |
| 712 | static int int_register_android_os_BinderInternal(JNIEnv* env) |
| 713 | { |
| 714 | jclass clazz; |
| 715 | |
| 716 | clazz = env->FindClass(kBinderInternalPathName); |
| 717 | LOG_FATAL_IF(clazz == NULL, "Unable to find class com.android.internal.os.BinderInternal"); |
| 718 | |
| 719 | gBinderInternalOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 720 | gBinderInternalOffsets.mForceGc |
| 721 | = env->GetStaticMethodID(clazz, "forceBinderGc", "()V"); |
| 722 | assert(gBinderInternalOffsets.mForceGc); |
| 723 | |
| 724 | return AndroidRuntime::registerNativeMethods( |
| 725 | env, kBinderInternalPathName, |
| 726 | gBinderInternalMethods, NELEM(gBinderInternalMethods)); |
| 727 | } |
| 728 | |
| 729 | // **************************************************************************** |
| 730 | // **************************************************************************** |
| 731 | // **************************************************************************** |
| 732 | |
| 733 | static jboolean android_os_BinderProxy_pingBinder(JNIEnv* env, jobject obj) |
| 734 | { |
| 735 | IBinder* target = (IBinder*) |
| 736 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 737 | if (target == NULL) { |
| 738 | return JNI_FALSE; |
| 739 | } |
| 740 | status_t err = target->pingBinder(); |
| 741 | return err == NO_ERROR ? JNI_TRUE : JNI_FALSE; |
| 742 | } |
| 743 | |
| 744 | static jstring android_os_BinderProxy_getInterfaceDescriptor(JNIEnv* env, jobject obj) |
| 745 | { |
| 746 | IBinder* target = (IBinder*) env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 747 | if (target != NULL) { |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 748 | const String16& desc = target->getInterfaceDescriptor(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 749 | return env->NewString(desc.string(), desc.size()); |
| 750 | } |
| 751 | jniThrowException(env, "java/lang/RuntimeException", |
| 752 | "No binder found for object"); |
| 753 | return NULL; |
| 754 | } |
| 755 | |
| 756 | static jboolean android_os_BinderProxy_isBinderAlive(JNIEnv* env, jobject obj) |
| 757 | { |
| 758 | IBinder* target = (IBinder*) |
| 759 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 760 | if (target == NULL) { |
| 761 | return JNI_FALSE; |
| 762 | } |
| 763 | bool alive = target->isBinderAlive(); |
| 764 | return alive ? JNI_TRUE : JNI_FALSE; |
| 765 | } |
| 766 | |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 767 | static int getprocname(pid_t pid, char *buf, size_t len) { |
| 768 | char filename[20]; |
| 769 | FILE *f; |
| 770 | |
| 771 | sprintf(filename, "/proc/%d/cmdline", pid); |
| 772 | f = fopen(filename, "r"); |
| 773 | if (!f) { *buf = '\0'; return 1; } |
| 774 | if (!fgets(buf, len, f)) { *buf = '\0'; return 2; } |
| 775 | fclose(f); |
| 776 | return 0; |
| 777 | } |
| 778 | |
| 779 | static bool push_eventlog_string(char** pos, const char* end, const char* str) { |
| 780 | jint len = strlen(str); |
| 781 | int space_needed = 1 + sizeof(len) + len; |
| 782 | if (end - *pos < space_needed) { |
| 783 | LOGW("not enough space for string. remain=%d; needed=%d", |
| 784 | (end - *pos), space_needed); |
| 785 | return false; |
| 786 | } |
| 787 | **pos = EVENT_TYPE_STRING; |
| 788 | (*pos)++; |
| 789 | memcpy(*pos, &len, sizeof(len)); |
| 790 | *pos += sizeof(len); |
| 791 | memcpy(*pos, str, len); |
| 792 | *pos += len; |
| 793 | return true; |
| 794 | } |
| 795 | |
| 796 | static bool push_eventlog_int(char** pos, const char* end, jint val) { |
| 797 | int space_needed = 1 + sizeof(val); |
| 798 | if (end - *pos < space_needed) { |
| 799 | LOGW("not enough space for int. remain=%d; needed=%d", |
| 800 | (end - *pos), space_needed); |
| 801 | return false; |
| 802 | } |
| 803 | **pos = EVENT_TYPE_INT; |
| 804 | (*pos)++; |
| 805 | memcpy(*pos, &val, sizeof(val)); |
| 806 | *pos += sizeof(val); |
| 807 | return true; |
| 808 | } |
| 809 | |
| 810 | // From frameworks/base/core/java/android/content/EventLogTags.logtags: |
| 811 | #define LOGTAG_BINDER_OPERATION 52004 |
| 812 | |
| 813 | static void conditionally_log_binder_call(int64_t start_millis, |
| 814 | IBinder* target, jint code) { |
| 815 | int duration_ms = static_cast<int>(uptimeMillis() - start_millis); |
| 816 | |
| 817 | int sample_percent; |
| 818 | if (duration_ms >= 500) { |
| 819 | sample_percent = 100; |
| 820 | } else { |
| 821 | sample_percent = 100 * duration_ms / 500; |
| 822 | if (sample_percent == 0) { |
| 823 | return; |
| 824 | } |
| 825 | if (sample_percent < (random() % 100 + 1)) { |
| 826 | return; |
| 827 | } |
| 828 | } |
| 829 | |
| 830 | char process_name[40]; |
| 831 | getprocname(getpid(), process_name, sizeof(process_name)); |
| 832 | String8 desc(target->getInterfaceDescriptor()); |
| 833 | |
| 834 | char buf[LOGGER_ENTRY_MAX_PAYLOAD]; |
| 835 | buf[0] = EVENT_TYPE_LIST; |
| 836 | buf[1] = 5; |
| 837 | char* pos = &buf[2]; |
| 838 | char* end = &buf[LOGGER_ENTRY_MAX_PAYLOAD - 1]; // leave room for final \n |
| 839 | if (!push_eventlog_string(&pos, end, desc.string())) return; |
| 840 | if (!push_eventlog_int(&pos, end, code)) return; |
| 841 | if (!push_eventlog_int(&pos, end, duration_ms)) return; |
| 842 | if (!push_eventlog_string(&pos, end, process_name)) return; |
| 843 | if (!push_eventlog_int(&pos, end, sample_percent)) return; |
| 844 | *(pos++) = '\n'; // conventional with EVENT_TYPE_LIST apparently. |
| 845 | android_bWriteLog(LOGTAG_BINDER_OPERATION, buf, pos - buf); |
| 846 | } |
| 847 | |
Brad Fitzpatrick | ad8fd28 | 2010-03-25 02:01:32 -0700 | [diff] [blame] | 848 | // We only measure binder call durations to potentially log them if |
| 849 | // we're on the main thread. Unfortunately sim-eng doesn't seem to |
| 850 | // have gettid, so we just ignore this and don't log if we can't |
| 851 | // get the thread id. |
| 852 | static bool should_time_binder_calls() { |
Brad Fitzpatrick | 5348c01 | 2010-03-25 12:43:56 -0700 | [diff] [blame^] | 853 | #ifdef HAVE_GETTID |
| 854 | return (getpid() == androidGetTid()); |
Brad Fitzpatrick | ad8fd28 | 2010-03-25 02:01:32 -0700 | [diff] [blame] | 855 | #else |
| 856 | #warning no gettid(), so not logging Binder calls... |
| 857 | return false; |
| 858 | #endif |
| 859 | } |
| 860 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 861 | static jboolean android_os_BinderProxy_transact(JNIEnv* env, jobject obj, |
| 862 | jint code, jobject dataObj, |
| 863 | jobject replyObj, jint flags) |
| 864 | { |
| 865 | if (dataObj == NULL) { |
| 866 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 867 | return JNI_FALSE; |
| 868 | } |
| 869 | |
| 870 | Parcel* data = parcelForJavaObject(env, dataObj); |
| 871 | if (data == NULL) { |
| 872 | return JNI_FALSE; |
| 873 | } |
| 874 | Parcel* reply = parcelForJavaObject(env, replyObj); |
| 875 | if (reply == NULL && replyObj != NULL) { |
| 876 | return JNI_FALSE; |
| 877 | } |
| 878 | |
| 879 | IBinder* target = (IBinder*) |
| 880 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 881 | if (target == NULL) { |
| 882 | jniThrowException(env, "java/lang/IllegalStateException", "Binder has been finalized!"); |
| 883 | return JNI_FALSE; |
| 884 | } |
| 885 | |
| 886 | LOGV("Java code calling transact on %p in Java object %p with code %d\n", |
| 887 | target, obj, code); |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 888 | |
| 889 | // Only log the binder call duration for things on the Java-level main thread. |
Brad Fitzpatrick | ad8fd28 | 2010-03-25 02:01:32 -0700 | [diff] [blame] | 890 | // But if we don't |
| 891 | const bool time_binder_calls = should_time_binder_calls(); |
| 892 | |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 893 | int64_t start_millis; |
Brad Fitzpatrick | ad8fd28 | 2010-03-25 02:01:32 -0700 | [diff] [blame] | 894 | if (time_binder_calls) { |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 895 | start_millis = uptimeMillis(); |
| 896 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 897 | //printf("Transact from Java code to %p sending: ", target); data->print(); |
| 898 | status_t err = target->transact(code, *data, reply, flags); |
| 899 | //if (reply) printf("Transact from Java code to %p received: ", target); reply->print(); |
Brad Fitzpatrick | ad8fd28 | 2010-03-25 02:01:32 -0700 | [diff] [blame] | 900 | if (time_binder_calls) { |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 901 | conditionally_log_binder_call(start_millis, target, code); |
| 902 | } |
| 903 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 904 | if (err == NO_ERROR) { |
| 905 | return JNI_TRUE; |
| 906 | } else if (err == UNKNOWN_TRANSACTION) { |
| 907 | return JNI_FALSE; |
| 908 | } |
| 909 | |
| 910 | signalExceptionForError(env, obj, err); |
| 911 | return JNI_FALSE; |
| 912 | } |
| 913 | |
| 914 | static void android_os_BinderProxy_linkToDeath(JNIEnv* env, jobject obj, |
| 915 | jobject recipient, jint flags) |
| 916 | { |
| 917 | if (recipient == NULL) { |
| 918 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 919 | return; |
| 920 | } |
| 921 | |
| 922 | IBinder* target = (IBinder*) |
| 923 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 924 | if (target == NULL) { |
| 925 | LOGW("Binder has been finalized when calling linkToDeath() with recip=%p)\n", recipient); |
| 926 | assert(false); |
| 927 | } |
| 928 | |
| 929 | LOGV("linkToDeath: binder=%p recipient=%p\n", target, recipient); |
| 930 | |
| 931 | if (!target->localBinder()) { |
| 932 | sp<JavaDeathRecipient> jdr = new JavaDeathRecipient(env, recipient); |
| 933 | status_t err = target->linkToDeath(jdr, recipient, flags); |
| 934 | if (err != NO_ERROR) { |
| 935 | // Failure adding the death recipient, so clear its reference |
| 936 | // now. |
| 937 | jdr->clearReference(); |
| 938 | signalExceptionForError(env, obj, err); |
| 939 | } |
| 940 | } |
| 941 | } |
| 942 | |
| 943 | static jboolean android_os_BinderProxy_unlinkToDeath(JNIEnv* env, jobject obj, |
| 944 | jobject recipient, jint flags) |
| 945 | { |
| 946 | jboolean res = JNI_FALSE; |
| 947 | if (recipient == NULL) { |
| 948 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 949 | return res; |
| 950 | } |
| 951 | |
| 952 | IBinder* target = (IBinder*) |
| 953 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 954 | if (target == NULL) { |
| 955 | LOGW("Binder has been finalized when calling linkToDeath() with recip=%p)\n", recipient); |
| 956 | return JNI_FALSE; |
| 957 | } |
| 958 | |
| 959 | LOGV("unlinkToDeath: binder=%p recipient=%p\n", target, recipient); |
| 960 | |
| 961 | if (!target->localBinder()) { |
| 962 | wp<IBinder::DeathRecipient> dr; |
| 963 | status_t err = target->unlinkToDeath(NULL, recipient, flags, &dr); |
| 964 | if (err == NO_ERROR && dr != NULL) { |
| 965 | sp<IBinder::DeathRecipient> sdr = dr.promote(); |
| 966 | JavaDeathRecipient* jdr = static_cast<JavaDeathRecipient*>(sdr.get()); |
| 967 | if (jdr != NULL) { |
| 968 | jdr->clearReference(); |
| 969 | } |
| 970 | } |
| 971 | if (err == NO_ERROR || err == DEAD_OBJECT) { |
| 972 | res = JNI_TRUE; |
| 973 | } else { |
| 974 | jniThrowException(env, "java/util/NoSuchElementException", |
| 975 | "Death link does not exist"); |
| 976 | } |
| 977 | } |
| 978 | |
| 979 | return res; |
| 980 | } |
| 981 | |
| 982 | static void android_os_BinderProxy_destroy(JNIEnv* env, jobject obj) |
| 983 | { |
| 984 | IBinder* b = (IBinder*) |
| 985 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 986 | LOGV("Destroying BinderProxy %p: binder=%p\n", obj, b); |
| 987 | env->SetIntField(obj, gBinderProxyOffsets.mObject, 0); |
| 988 | b->decStrong(obj); |
| 989 | IPCThreadState::self()->flushCommands(); |
| 990 | } |
| 991 | |
| 992 | // ---------------------------------------------------------------------------- |
| 993 | |
| 994 | static const JNINativeMethod gBinderProxyMethods[] = { |
| 995 | /* name, signature, funcPtr */ |
| 996 | {"pingBinder", "()Z", (void*)android_os_BinderProxy_pingBinder}, |
| 997 | {"isBinderAlive", "()Z", (void*)android_os_BinderProxy_isBinderAlive}, |
| 998 | {"getInterfaceDescriptor", "()Ljava/lang/String;", (void*)android_os_BinderProxy_getInterfaceDescriptor}, |
| 999 | {"transact", "(ILandroid/os/Parcel;Landroid/os/Parcel;I)Z", (void*)android_os_BinderProxy_transact}, |
| 1000 | {"linkToDeath", "(Landroid/os/IBinder$DeathRecipient;I)V", (void*)android_os_BinderProxy_linkToDeath}, |
| 1001 | {"unlinkToDeath", "(Landroid/os/IBinder$DeathRecipient;I)Z", (void*)android_os_BinderProxy_unlinkToDeath}, |
| 1002 | {"destroy", "()V", (void*)android_os_BinderProxy_destroy}, |
| 1003 | }; |
| 1004 | |
| 1005 | const char* const kBinderProxyPathName = "android/os/BinderProxy"; |
| 1006 | |
| 1007 | static int int_register_android_os_BinderProxy(JNIEnv* env) |
| 1008 | { |
| 1009 | jclass clazz; |
| 1010 | |
| 1011 | clazz = env->FindClass("java/lang/ref/WeakReference"); |
| 1012 | LOG_FATAL_IF(clazz == NULL, "Unable to find class java.lang.ref.WeakReference"); |
| 1013 | gWeakReferenceOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1014 | gWeakReferenceOffsets.mGet |
| 1015 | = env->GetMethodID(clazz, "get", "()Ljava/lang/Object;"); |
| 1016 | assert(gWeakReferenceOffsets.mGet); |
| 1017 | |
| 1018 | clazz = env->FindClass("java/lang/Error"); |
| 1019 | LOG_FATAL_IF(clazz == NULL, "Unable to find class java.lang.Error"); |
| 1020 | gErrorOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1021 | |
| 1022 | clazz = env->FindClass(kBinderProxyPathName); |
| 1023 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.BinderProxy"); |
| 1024 | |
| 1025 | gBinderProxyOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1026 | gBinderProxyOffsets.mConstructor |
| 1027 | = env->GetMethodID(clazz, "<init>", "()V"); |
| 1028 | assert(gBinderProxyOffsets.mConstructor); |
| 1029 | gBinderProxyOffsets.mSendDeathNotice |
| 1030 | = env->GetStaticMethodID(clazz, "sendDeathNotice", "(Landroid/os/IBinder$DeathRecipient;)V"); |
| 1031 | assert(gBinderProxyOffsets.mSendDeathNotice); |
| 1032 | |
| 1033 | gBinderProxyOffsets.mObject |
| 1034 | = env->GetFieldID(clazz, "mObject", "I"); |
| 1035 | assert(gBinderProxyOffsets.mObject); |
| 1036 | gBinderProxyOffsets.mSelf |
| 1037 | = env->GetFieldID(clazz, "mSelf", "Ljava/lang/ref/WeakReference;"); |
| 1038 | assert(gBinderProxyOffsets.mSelf); |
| 1039 | |
| 1040 | return AndroidRuntime::registerNativeMethods( |
| 1041 | env, kBinderProxyPathName, |
| 1042 | gBinderProxyMethods, NELEM(gBinderProxyMethods)); |
| 1043 | } |
| 1044 | |
| 1045 | // **************************************************************************** |
| 1046 | // **************************************************************************** |
| 1047 | // **************************************************************************** |
| 1048 | |
| 1049 | static jint android_os_Parcel_dataSize(JNIEnv* env, jobject clazz) |
| 1050 | { |
| 1051 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1052 | return parcel ? parcel->dataSize() : 0; |
| 1053 | } |
| 1054 | |
| 1055 | static jint android_os_Parcel_dataAvail(JNIEnv* env, jobject clazz) |
| 1056 | { |
| 1057 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1058 | return parcel ? parcel->dataAvail() : 0; |
| 1059 | } |
| 1060 | |
| 1061 | static jint android_os_Parcel_dataPosition(JNIEnv* env, jobject clazz) |
| 1062 | { |
| 1063 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1064 | return parcel ? parcel->dataPosition() : 0; |
| 1065 | } |
| 1066 | |
| 1067 | static jint android_os_Parcel_dataCapacity(JNIEnv* env, jobject clazz) |
| 1068 | { |
| 1069 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1070 | return parcel ? parcel->dataCapacity() : 0; |
| 1071 | } |
| 1072 | |
| 1073 | static void android_os_Parcel_setDataSize(JNIEnv* env, jobject clazz, jint size) |
| 1074 | { |
| 1075 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1076 | if (parcel != NULL) { |
| 1077 | const status_t err = parcel->setDataSize(size); |
| 1078 | if (err != NO_ERROR) { |
| 1079 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1080 | } |
| 1081 | } |
| 1082 | } |
| 1083 | |
| 1084 | static void android_os_Parcel_setDataPosition(JNIEnv* env, jobject clazz, jint pos) |
| 1085 | { |
| 1086 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1087 | if (parcel != NULL) { |
| 1088 | parcel->setDataPosition(pos); |
| 1089 | } |
| 1090 | } |
| 1091 | |
| 1092 | static void android_os_Parcel_setDataCapacity(JNIEnv* env, jobject clazz, jint size) |
| 1093 | { |
| 1094 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1095 | if (parcel != NULL) { |
| 1096 | const status_t err = parcel->setDataCapacity(size); |
| 1097 | if (err != NO_ERROR) { |
| 1098 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1099 | } |
| 1100 | } |
| 1101 | } |
| 1102 | |
| 1103 | static void android_os_Parcel_writeNative(JNIEnv* env, jobject clazz, |
| 1104 | jobject data, jint offset, |
| 1105 | jint length) |
| 1106 | { |
| 1107 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1108 | if (parcel == NULL) { |
| 1109 | return; |
| 1110 | } |
| 1111 | void *dest; |
| 1112 | |
| 1113 | const status_t err = parcel->writeInt32(length); |
| 1114 | if (err != NO_ERROR) { |
| 1115 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1116 | } |
| 1117 | |
| 1118 | dest = parcel->writeInplace(length); |
| 1119 | |
| 1120 | if (dest == NULL) { |
| 1121 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1122 | return; |
| 1123 | } |
| 1124 | |
| 1125 | jbyte* ar = (jbyte*)env->GetPrimitiveArrayCritical((jarray)data, 0); |
| 1126 | if (ar) { |
| 1127 | memcpy(dest, ar, length); |
| 1128 | env->ReleasePrimitiveArrayCritical((jarray)data, ar, 0); |
| 1129 | } |
| 1130 | } |
| 1131 | |
| 1132 | |
| 1133 | static void android_os_Parcel_writeInt(JNIEnv* env, jobject clazz, jint val) |
| 1134 | { |
| 1135 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1136 | if (parcel != NULL) { |
| 1137 | const status_t err = parcel->writeInt32(val); |
| 1138 | if (err != NO_ERROR) { |
| 1139 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1140 | } |
| 1141 | } |
| 1142 | } |
| 1143 | |
| 1144 | static void android_os_Parcel_writeLong(JNIEnv* env, jobject clazz, jlong val) |
| 1145 | { |
| 1146 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1147 | if (parcel != NULL) { |
| 1148 | const status_t err = parcel->writeInt64(val); |
| 1149 | if (err != NO_ERROR) { |
| 1150 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1151 | } |
| 1152 | } |
| 1153 | } |
| 1154 | |
| 1155 | static void android_os_Parcel_writeFloat(JNIEnv* env, jobject clazz, jfloat val) |
| 1156 | { |
| 1157 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1158 | if (parcel != NULL) { |
| 1159 | const status_t err = parcel->writeFloat(val); |
| 1160 | if (err != NO_ERROR) { |
| 1161 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1162 | } |
| 1163 | } |
| 1164 | } |
| 1165 | |
| 1166 | static void android_os_Parcel_writeDouble(JNIEnv* env, jobject clazz, jdouble val) |
| 1167 | { |
| 1168 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1169 | if (parcel != NULL) { |
| 1170 | const status_t err = parcel->writeDouble(val); |
| 1171 | if (err != NO_ERROR) { |
| 1172 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1173 | } |
| 1174 | } |
| 1175 | } |
| 1176 | |
| 1177 | static void android_os_Parcel_writeString(JNIEnv* env, jobject clazz, jstring val) |
| 1178 | { |
| 1179 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1180 | if (parcel != NULL) { |
| 1181 | status_t err = NO_MEMORY; |
| 1182 | if (val) { |
| 1183 | const jchar* str = env->GetStringCritical(val, 0); |
| 1184 | if (str) { |
| 1185 | err = parcel->writeString16(str, env->GetStringLength(val)); |
| 1186 | env->ReleaseStringCritical(val, str); |
| 1187 | } |
| 1188 | } else { |
| 1189 | err = parcel->writeString16(NULL, 0); |
| 1190 | } |
| 1191 | if (err != NO_ERROR) { |
| 1192 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1193 | } |
| 1194 | } |
| 1195 | } |
| 1196 | |
| 1197 | static void android_os_Parcel_writeStrongBinder(JNIEnv* env, jobject clazz, jobject object) |
| 1198 | { |
| 1199 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1200 | if (parcel != NULL) { |
| 1201 | const status_t err = parcel->writeStrongBinder(ibinderForJavaObject(env, object)); |
| 1202 | if (err != NO_ERROR) { |
| 1203 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1204 | } |
| 1205 | } |
| 1206 | } |
| 1207 | |
| 1208 | static void android_os_Parcel_writeFileDescriptor(JNIEnv* env, jobject clazz, jobject object) |
| 1209 | { |
| 1210 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1211 | if (parcel != NULL) { |
| 1212 | const status_t err = parcel->writeDupFileDescriptor( |
| 1213 | env->GetIntField(object, gFileDescriptorOffsets.mDescriptor)); |
| 1214 | if (err != NO_ERROR) { |
| 1215 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1216 | } |
| 1217 | } |
| 1218 | } |
| 1219 | |
| 1220 | static jbyteArray android_os_Parcel_createByteArray(JNIEnv* env, jobject clazz) |
| 1221 | { |
| 1222 | jbyteArray ret = NULL; |
| 1223 | |
| 1224 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1225 | if (parcel != NULL) { |
| 1226 | int32_t len = parcel->readInt32(); |
| 1227 | |
| 1228 | // sanity check the stored length against the true data size |
| 1229 | if (len >= 0 && len <= (int32_t)parcel->dataAvail()) { |
| 1230 | ret = env->NewByteArray(len); |
| 1231 | |
| 1232 | if (ret != NULL) { |
| 1233 | jbyte* a2 = (jbyte*)env->GetPrimitiveArrayCritical(ret, 0); |
| 1234 | if (a2) { |
| 1235 | const void* data = parcel->readInplace(len); |
| 1236 | memcpy(a2, data, len); |
| 1237 | env->ReleasePrimitiveArrayCritical(ret, a2, 0); |
| 1238 | } |
| 1239 | } |
| 1240 | } |
| 1241 | } |
| 1242 | |
| 1243 | return ret; |
| 1244 | } |
| 1245 | |
| 1246 | static jint android_os_Parcel_readInt(JNIEnv* env, jobject clazz) |
| 1247 | { |
| 1248 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1249 | if (parcel != NULL) { |
| 1250 | return parcel->readInt32(); |
| 1251 | } |
| 1252 | return 0; |
| 1253 | } |
| 1254 | |
| 1255 | static jlong android_os_Parcel_readLong(JNIEnv* env, jobject clazz) |
| 1256 | { |
| 1257 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1258 | if (parcel != NULL) { |
| 1259 | return parcel->readInt64(); |
| 1260 | } |
| 1261 | return 0; |
| 1262 | } |
| 1263 | |
| 1264 | static jfloat android_os_Parcel_readFloat(JNIEnv* env, jobject clazz) |
| 1265 | { |
| 1266 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1267 | if (parcel != NULL) { |
| 1268 | return parcel->readFloat(); |
| 1269 | } |
| 1270 | return 0; |
| 1271 | } |
| 1272 | |
| 1273 | static jdouble android_os_Parcel_readDouble(JNIEnv* env, jobject clazz) |
| 1274 | { |
| 1275 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1276 | if (parcel != NULL) { |
| 1277 | return parcel->readDouble(); |
| 1278 | } |
| 1279 | return 0; |
| 1280 | } |
| 1281 | |
| 1282 | static jstring android_os_Parcel_readString(JNIEnv* env, jobject clazz) |
| 1283 | { |
| 1284 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1285 | if (parcel != NULL) { |
| 1286 | size_t len; |
| 1287 | const char16_t* str = parcel->readString16Inplace(&len); |
| 1288 | if (str) { |
| 1289 | return env->NewString(str, len); |
| 1290 | } |
| 1291 | return NULL; |
| 1292 | } |
| 1293 | return NULL; |
| 1294 | } |
| 1295 | |
| 1296 | static jobject android_os_Parcel_readStrongBinder(JNIEnv* env, jobject clazz) |
| 1297 | { |
| 1298 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1299 | if (parcel != NULL) { |
| 1300 | return javaObjectForIBinder(env, parcel->readStrongBinder()); |
| 1301 | } |
| 1302 | return NULL; |
| 1303 | } |
| 1304 | |
| 1305 | static jobject android_os_Parcel_readFileDescriptor(JNIEnv* env, jobject clazz) |
| 1306 | { |
| 1307 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1308 | if (parcel != NULL) { |
| 1309 | int fd = parcel->readFileDescriptor(); |
| 1310 | if (fd < 0) return NULL; |
| 1311 | fd = dup(fd); |
| 1312 | if (fd < 0) return NULL; |
| 1313 | jobject object = env->NewObject( |
| 1314 | gFileDescriptorOffsets.mClass, gFileDescriptorOffsets.mConstructor); |
| 1315 | if (object != NULL) { |
| 1316 | //LOGI("Created new FileDescriptor %p with fd %d\n", object, fd); |
| 1317 | env->SetIntField(object, gFileDescriptorOffsets.mDescriptor, fd); |
| 1318 | } |
| 1319 | return object; |
| 1320 | } |
| 1321 | return NULL; |
| 1322 | } |
| 1323 | |
| 1324 | static jobject android_os_Parcel_openFileDescriptor(JNIEnv* env, jobject clazz, |
| 1325 | jstring name, jint mode) |
| 1326 | { |
| 1327 | if (name == NULL) { |
| 1328 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 1329 | return NULL; |
| 1330 | } |
| 1331 | const jchar* str = env->GetStringCritical(name, 0); |
| 1332 | if (str == NULL) { |
| 1333 | // Whatever, whatever. |
| 1334 | jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| 1335 | return NULL; |
| 1336 | } |
| 1337 | String8 name8(str, env->GetStringLength(name)); |
| 1338 | env->ReleaseStringCritical(name, str); |
| 1339 | int flags=0; |
| 1340 | switch (mode&0x30000000) { |
| 1341 | case 0: |
| 1342 | case 0x10000000: |
| 1343 | flags = O_RDONLY; |
| 1344 | break; |
| 1345 | case 0x20000000: |
| 1346 | flags = O_WRONLY; |
| 1347 | break; |
| 1348 | case 0x30000000: |
| 1349 | flags = O_RDWR; |
| 1350 | break; |
| 1351 | } |
| 1352 | |
| 1353 | if (mode&0x08000000) flags |= O_CREAT; |
| 1354 | if (mode&0x04000000) flags |= O_TRUNC; |
| 1355 | if (mode&0x02000000) flags |= O_APPEND; |
| 1356 | |
| 1357 | int realMode = S_IRWXU|S_IRWXG; |
| 1358 | if (mode&0x00000001) realMode |= S_IROTH; |
| 1359 | if (mode&0x00000002) realMode |= S_IWOTH; |
| 1360 | |
| 1361 | int fd = open(name8.string(), flags, realMode); |
| 1362 | if (fd < 0) { |
| 1363 | jniThrowException(env, "java/io/FileNotFoundException", NULL); |
| 1364 | return NULL; |
| 1365 | } |
| 1366 | jobject object = newFileDescriptor(env, fd); |
| 1367 | if (object == NULL) { |
| 1368 | close(fd); |
| 1369 | } |
| 1370 | return object; |
| 1371 | } |
| 1372 | |
| 1373 | static void android_os_Parcel_closeFileDescriptor(JNIEnv* env, jobject clazz, jobject object) |
| 1374 | { |
| 1375 | int fd = env->GetIntField(object, gFileDescriptorOffsets.mDescriptor); |
| 1376 | if (fd >= 0) { |
| 1377 | env->SetIntField(object, gFileDescriptorOffsets.mDescriptor, -1); |
| 1378 | //LOGI("Closing ParcelFileDescriptor %d\n", fd); |
| 1379 | close(fd); |
| 1380 | } |
| 1381 | } |
| 1382 | |
| 1383 | static void android_os_Parcel_freeBuffer(JNIEnv* env, jobject clazz) |
| 1384 | { |
| 1385 | int32_t own = env->GetIntField(clazz, gParcelOffsets.mOwnObject); |
| 1386 | if (own) { |
| 1387 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1388 | if (parcel != NULL) { |
| 1389 | //LOGI("Parcel.freeBuffer() called for C++ Parcel %p\n", parcel); |
| 1390 | parcel->freeData(); |
| 1391 | } |
| 1392 | } |
| 1393 | } |
| 1394 | |
| 1395 | static void android_os_Parcel_init(JNIEnv* env, jobject clazz, jint parcelInt) |
| 1396 | { |
| 1397 | Parcel* parcel = (Parcel*)parcelInt; |
| 1398 | int own = 0; |
| 1399 | if (!parcel) { |
| 1400 | //LOGI("Initializing obj %p: creating new Parcel\n", clazz); |
| 1401 | own = 1; |
| 1402 | parcel = new Parcel; |
| 1403 | } else { |
| 1404 | //LOGI("Initializing obj %p: given existing Parcel %p\n", clazz, parcel); |
| 1405 | } |
| 1406 | if (parcel == NULL) { |
| 1407 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1408 | return; |
| 1409 | } |
| 1410 | //LOGI("Initializing obj %p from C++ Parcel %p, own=%d\n", clazz, parcel, own); |
| 1411 | env->SetIntField(clazz, gParcelOffsets.mOwnObject, own); |
| 1412 | env->SetIntField(clazz, gParcelOffsets.mObject, (int)parcel); |
| 1413 | } |
| 1414 | |
| 1415 | static void android_os_Parcel_destroy(JNIEnv* env, jobject clazz) |
| 1416 | { |
| 1417 | int32_t own = env->GetIntField(clazz, gParcelOffsets.mOwnObject); |
| 1418 | if (own) { |
| 1419 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1420 | env->SetIntField(clazz, gParcelOffsets.mObject, 0); |
| 1421 | //LOGI("Destroying obj %p: deleting C++ Parcel %p\n", clazz, parcel); |
| 1422 | delete parcel; |
| 1423 | } else { |
| 1424 | env->SetIntField(clazz, gParcelOffsets.mObject, 0); |
| 1425 | //LOGI("Destroying obj %p: leaving C++ Parcel %p\n", clazz); |
| 1426 | } |
| 1427 | } |
| 1428 | |
| 1429 | static jbyteArray android_os_Parcel_marshall(JNIEnv* env, jobject clazz) |
| 1430 | { |
| 1431 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1432 | if (parcel == NULL) { |
| 1433 | return NULL; |
| 1434 | } |
| 1435 | |
| 1436 | // do not marshall if there are binder objects in the parcel |
| 1437 | if (parcel->objectsCount()) |
| 1438 | { |
| 1439 | jniThrowException(env, "java/lang/RuntimeException", "Tried to marshall a Parcel that contained Binder objects."); |
| 1440 | return NULL; |
| 1441 | } |
| 1442 | |
| 1443 | jbyteArray ret = env->NewByteArray(parcel->dataSize()); |
| 1444 | |
| 1445 | if (ret != NULL) |
| 1446 | { |
| 1447 | jbyte* array = (jbyte*)env->GetPrimitiveArrayCritical(ret, 0); |
| 1448 | if (array != NULL) |
| 1449 | { |
| 1450 | memcpy(array, parcel->data(), parcel->dataSize()); |
| 1451 | env->ReleasePrimitiveArrayCritical(ret, array, 0); |
| 1452 | } |
| 1453 | } |
| 1454 | |
| 1455 | return ret; |
| 1456 | } |
| 1457 | |
| 1458 | static void android_os_Parcel_unmarshall(JNIEnv* env, jobject clazz, jbyteArray data, jint offset, jint length) |
| 1459 | { |
| 1460 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1461 | if (parcel == NULL || length < 0) { |
| 1462 | return; |
| 1463 | } |
| 1464 | |
| 1465 | jbyte* array = (jbyte*)env->GetPrimitiveArrayCritical(data, 0); |
| 1466 | if (array) |
| 1467 | { |
| 1468 | parcel->setDataSize(length); |
| 1469 | parcel->setDataPosition(0); |
| 1470 | |
| 1471 | void* raw = parcel->writeInplace(length); |
| 1472 | memcpy(raw, (array + offset), length); |
| 1473 | |
| 1474 | env->ReleasePrimitiveArrayCritical(data, array, 0); |
| 1475 | } |
| 1476 | } |
| 1477 | |
| 1478 | static void android_os_Parcel_appendFrom(JNIEnv* env, jobject clazz, jobject parcel, jint offset, jint length) |
| 1479 | { |
| 1480 | Parcel* thisParcel = parcelForJavaObject(env, clazz); |
| 1481 | if (thisParcel == NULL) { |
| 1482 | return; |
| 1483 | } |
| 1484 | Parcel* otherParcel = parcelForJavaObject(env, parcel); |
| 1485 | if (otherParcel == NULL) { |
| 1486 | return; |
| 1487 | } |
| 1488 | |
| 1489 | (void) thisParcel->appendFrom(otherParcel, offset, length); |
| 1490 | } |
| 1491 | |
| 1492 | static jboolean android_os_Parcel_hasFileDescriptors(JNIEnv* env, jobject clazz) |
| 1493 | { |
| 1494 | jboolean ret = JNI_FALSE; |
| 1495 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1496 | if (parcel != NULL) { |
| 1497 | if (parcel->hasFileDescriptors()) { |
| 1498 | ret = JNI_TRUE; |
| 1499 | } |
| 1500 | } |
| 1501 | return ret; |
| 1502 | } |
| 1503 | |
| 1504 | static void android_os_Parcel_writeInterfaceToken(JNIEnv* env, jobject clazz, jstring name) |
| 1505 | { |
| 1506 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1507 | if (parcel != NULL) { |
| 1508 | // In the current implementation, the token is just the serialized interface name that |
| 1509 | // the caller expects to be invoking |
| 1510 | const jchar* str = env->GetStringCritical(name, 0); |
| 1511 | if (str != NULL) { |
| 1512 | parcel->writeInterfaceToken(String16(str, env->GetStringLength(name))); |
| 1513 | env->ReleaseStringCritical(name, str); |
| 1514 | } |
| 1515 | } |
| 1516 | } |
| 1517 | |
| 1518 | static void android_os_Parcel_enforceInterface(JNIEnv* env, jobject clazz, jstring name) |
| 1519 | { |
| 1520 | jboolean ret = JNI_FALSE; |
| 1521 | |
| 1522 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1523 | if (parcel != NULL) { |
| 1524 | const jchar* str = env->GetStringCritical(name, 0); |
| 1525 | if (str) { |
| 1526 | bool isValid = parcel->enforceInterface(String16(str, env->GetStringLength(name))); |
| 1527 | env->ReleaseStringCritical(name, str); |
| 1528 | if (isValid) { |
| 1529 | return; // everything was correct -> return silently |
| 1530 | } |
| 1531 | } |
| 1532 | } |
| 1533 | |
| 1534 | // all error conditions wind up here |
| 1535 | jniThrowException(env, "java/lang/SecurityException", |
| 1536 | "Binder invocation to an incorrect interface"); |
| 1537 | } |
| 1538 | |
| 1539 | // ---------------------------------------------------------------------------- |
| 1540 | |
| 1541 | static const JNINativeMethod gParcelMethods[] = { |
| 1542 | {"dataSize", "()I", (void*)android_os_Parcel_dataSize}, |
| 1543 | {"dataAvail", "()I", (void*)android_os_Parcel_dataAvail}, |
| 1544 | {"dataPosition", "()I", (void*)android_os_Parcel_dataPosition}, |
| 1545 | {"dataCapacity", "()I", (void*)android_os_Parcel_dataCapacity}, |
| 1546 | {"setDataSize", "(I)V", (void*)android_os_Parcel_setDataSize}, |
| 1547 | {"setDataPosition", "(I)V", (void*)android_os_Parcel_setDataPosition}, |
| 1548 | {"setDataCapacity", "(I)V", (void*)android_os_Parcel_setDataCapacity}, |
| 1549 | {"writeNative", "([BII)V", (void*)android_os_Parcel_writeNative}, |
| 1550 | {"writeInt", "(I)V", (void*)android_os_Parcel_writeInt}, |
| 1551 | {"writeLong", "(J)V", (void*)android_os_Parcel_writeLong}, |
| 1552 | {"writeFloat", "(F)V", (void*)android_os_Parcel_writeFloat}, |
| 1553 | {"writeDouble", "(D)V", (void*)android_os_Parcel_writeDouble}, |
| 1554 | {"writeString", "(Ljava/lang/String;)V", (void*)android_os_Parcel_writeString}, |
| 1555 | {"writeStrongBinder", "(Landroid/os/IBinder;)V", (void*)android_os_Parcel_writeStrongBinder}, |
| 1556 | {"writeFileDescriptor", "(Ljava/io/FileDescriptor;)V", (void*)android_os_Parcel_writeFileDescriptor}, |
| 1557 | {"createByteArray", "()[B", (void*)android_os_Parcel_createByteArray}, |
| 1558 | {"readInt", "()I", (void*)android_os_Parcel_readInt}, |
| 1559 | {"readLong", "()J", (void*)android_os_Parcel_readLong}, |
| 1560 | {"readFloat", "()F", (void*)android_os_Parcel_readFloat}, |
| 1561 | {"readDouble", "()D", (void*)android_os_Parcel_readDouble}, |
| 1562 | {"readString", "()Ljava/lang/String;", (void*)android_os_Parcel_readString}, |
| 1563 | {"readStrongBinder", "()Landroid/os/IBinder;", (void*)android_os_Parcel_readStrongBinder}, |
| 1564 | {"internalReadFileDescriptor", "()Ljava/io/FileDescriptor;", (void*)android_os_Parcel_readFileDescriptor}, |
| 1565 | {"openFileDescriptor", "(Ljava/lang/String;I)Ljava/io/FileDescriptor;", (void*)android_os_Parcel_openFileDescriptor}, |
| 1566 | {"closeFileDescriptor", "(Ljava/io/FileDescriptor;)V", (void*)android_os_Parcel_closeFileDescriptor}, |
| 1567 | {"freeBuffer", "()V", (void*)android_os_Parcel_freeBuffer}, |
| 1568 | {"init", "(I)V", (void*)android_os_Parcel_init}, |
| 1569 | {"destroy", "()V", (void*)android_os_Parcel_destroy}, |
| 1570 | {"marshall", "()[B", (void*)android_os_Parcel_marshall}, |
| 1571 | {"unmarshall", "([BII)V", (void*)android_os_Parcel_unmarshall}, |
| 1572 | {"appendFrom", "(Landroid/os/Parcel;II)V", (void*)android_os_Parcel_appendFrom}, |
| 1573 | {"hasFileDescriptors", "()Z", (void*)android_os_Parcel_hasFileDescriptors}, |
| 1574 | {"writeInterfaceToken", "(Ljava/lang/String;)V", (void*)android_os_Parcel_writeInterfaceToken}, |
| 1575 | {"enforceInterface", "(Ljava/lang/String;)V", (void*)android_os_Parcel_enforceInterface}, |
| 1576 | }; |
| 1577 | |
| 1578 | const char* const kParcelPathName = "android/os/Parcel"; |
| 1579 | |
| 1580 | static int int_register_android_os_Parcel(JNIEnv* env) |
| 1581 | { |
| 1582 | jclass clazz; |
| 1583 | |
| 1584 | clazz = env->FindClass("android/util/Log"); |
| 1585 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.util.Log"); |
| 1586 | gLogOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1587 | gLogOffsets.mLogE = env->GetStaticMethodID( |
| 1588 | clazz, "e", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Throwable;)I"); |
| 1589 | assert(gLogOffsets.mLogE); |
| 1590 | |
| 1591 | clazz = env->FindClass("java/io/FileDescriptor"); |
| 1592 | LOG_FATAL_IF(clazz == NULL, "Unable to find class java.io.FileDescriptor"); |
| 1593 | gFileDescriptorOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1594 | gFileDescriptorOffsets.mConstructor |
| 1595 | = env->GetMethodID(clazz, "<init>", "()V"); |
| 1596 | gFileDescriptorOffsets.mDescriptor = env->GetFieldID(clazz, "descriptor", "I"); |
| 1597 | LOG_FATAL_IF(gFileDescriptorOffsets.mDescriptor == NULL, |
| 1598 | "Unable to find descriptor field in java.io.FileDescriptor"); |
| 1599 | |
| 1600 | clazz = env->FindClass("android/os/ParcelFileDescriptor"); |
| 1601 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.ParcelFileDescriptor"); |
| 1602 | gParcelFileDescriptorOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1603 | gParcelFileDescriptorOffsets.mConstructor |
| 1604 | = env->GetMethodID(clazz, "<init>", "(Ljava/io/FileDescriptor;)V"); |
| 1605 | |
| 1606 | clazz = env->FindClass(kParcelPathName); |
| 1607 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.Parcel"); |
| 1608 | |
| 1609 | gParcelOffsets.mObject |
| 1610 | = env->GetFieldID(clazz, "mObject", "I"); |
| 1611 | gParcelOffsets.mOwnObject |
| 1612 | = env->GetFieldID(clazz, "mOwnObject", "I"); |
| 1613 | |
| 1614 | return AndroidRuntime::registerNativeMethods( |
| 1615 | env, kParcelPathName, |
| 1616 | gParcelMethods, NELEM(gParcelMethods)); |
| 1617 | } |
| 1618 | |
| 1619 | int register_android_os_Binder(JNIEnv* env) |
| 1620 | { |
| 1621 | if (int_register_android_os_Binder(env) < 0) |
| 1622 | return -1; |
| 1623 | if (int_register_android_os_BinderInternal(env) < 0) |
| 1624 | return -1; |
| 1625 | if (int_register_android_os_BinderProxy(env) < 0) |
| 1626 | return -1; |
| 1627 | if (int_register_android_os_Parcel(env) < 0) |
| 1628 | return -1; |
| 1629 | return 0; |
| 1630 | } |
| 1631 | |
| 1632 | namespace android { |
| 1633 | |
| 1634 | // Returns the Unix file descriptor for a ParcelFileDescriptor object |
| 1635 | int getParcelFileDescriptorFD(JNIEnv* env, jobject object) |
| 1636 | { |
| 1637 | return env->GetIntField(object, gFileDescriptorOffsets.mDescriptor); |
| 1638 | } |
| 1639 | |
| 1640 | } |