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 | |
Brad Fitzpatrick | 727de40 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 137 | static struct strict_mode_callback_offsets_t |
| 138 | { |
| 139 | jclass mClass; |
| 140 | jmethodID mCallback; |
| 141 | } gStrictModeCallbackOffsets; |
| 142 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 143 | // **************************************************************************** |
| 144 | // **************************************************************************** |
| 145 | // **************************************************************************** |
| 146 | |
| 147 | static volatile int32_t gNumRefsCreated = 0; |
| 148 | static volatile int32_t gNumProxyRefs = 0; |
| 149 | static volatile int32_t gNumLocalRefs = 0; |
| 150 | static volatile int32_t gNumDeathRefs = 0; |
| 151 | |
| 152 | static void incRefsCreated(JNIEnv* env) |
| 153 | { |
| 154 | int old = android_atomic_inc(&gNumRefsCreated); |
| 155 | if (old == 200) { |
| 156 | android_atomic_and(0, &gNumRefsCreated); |
| 157 | env->CallStaticVoidMethod(gBinderInternalOffsets.mClass, |
| 158 | gBinderInternalOffsets.mForceGc); |
| 159 | } else { |
| 160 | LOGV("Now have %d binder ops", old); |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | static JavaVM* jnienv_to_javavm(JNIEnv* env) |
| 165 | { |
| 166 | JavaVM* vm; |
| 167 | return env->GetJavaVM(&vm) >= 0 ? vm : NULL; |
| 168 | } |
| 169 | |
| 170 | static JNIEnv* javavm_to_jnienv(JavaVM* vm) |
| 171 | { |
| 172 | JNIEnv* env; |
| 173 | return vm->GetEnv((void **)&env, JNI_VERSION_1_4) >= 0 ? env : NULL; |
| 174 | } |
| 175 | |
| 176 | static void report_exception(JNIEnv* env, jthrowable excep, const char* msg) |
| 177 | { |
| 178 | env->ExceptionClear(); |
| 179 | |
| 180 | jstring tagstr = env->NewStringUTF(LOG_TAG); |
| 181 | jstring msgstr = env->NewStringUTF(msg); |
| 182 | |
| 183 | if ((tagstr == NULL) || (msgstr == NULL)) { |
| 184 | env->ExceptionClear(); /* assume exception (OOM?) was thrown */ |
| 185 | LOGE("Unable to call Log.e()\n"); |
| 186 | LOGE("%s", msg); |
| 187 | goto bail; |
| 188 | } |
| 189 | |
| 190 | env->CallStaticIntMethod( |
| 191 | gLogOffsets.mClass, gLogOffsets.mLogE, tagstr, msgstr, excep); |
| 192 | if (env->ExceptionCheck()) { |
| 193 | /* attempting to log the failure has failed */ |
| 194 | LOGW("Failed trying to log exception, msg='%s'\n", msg); |
| 195 | env->ExceptionClear(); |
| 196 | } |
| 197 | |
| 198 | if (env->IsInstanceOf(excep, gErrorOffsets.mClass)) { |
| 199 | /* |
| 200 | * It's an Error: Reraise the exception, detach this thread, and |
| 201 | * wait for the fireworks. Die even more blatantly after a minute |
| 202 | * if the gentler attempt doesn't do the trick. |
| 203 | * |
| 204 | * The GetJavaVM function isn't on the "approved" list of JNI calls |
| 205 | * that can be made while an exception is pending, so we want to |
| 206 | * get the VM ptr, throw the exception, and then detach the thread. |
| 207 | */ |
| 208 | JavaVM* vm = jnienv_to_javavm(env); |
| 209 | env->Throw(excep); |
| 210 | vm->DetachCurrentThread(); |
| 211 | sleep(60); |
| 212 | LOGE("Forcefully exiting"); |
| 213 | exit(1); |
| 214 | *((int *) 1) = 1; |
| 215 | } |
| 216 | |
| 217 | bail: |
| 218 | /* discard local refs created for us by VM */ |
| 219 | env->DeleteLocalRef(tagstr); |
| 220 | env->DeleteLocalRef(msgstr); |
| 221 | } |
| 222 | |
Brad Fitzpatrick | 727de40 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 223 | static void set_dalvik_blockguard_policy(JNIEnv* env, jint strict_policy) |
| 224 | { |
| 225 | // Call back into android.os.StrictMode#onBinderStrictModePolicyChange |
| 226 | // to sync our state back to it. See the comments in StrictMode.java. |
| 227 | env->CallStaticVoidMethod(gStrictModeCallbackOffsets.mClass, |
| 228 | gStrictModeCallbackOffsets.mCallback, |
| 229 | strict_policy); |
| 230 | } |
| 231 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 232 | class JavaBBinderHolder; |
| 233 | |
| 234 | class JavaBBinder : public BBinder |
| 235 | { |
| 236 | public: |
| 237 | JavaBBinder(JNIEnv* env, jobject object) |
| 238 | : mVM(jnienv_to_javavm(env)), mObject(env->NewGlobalRef(object)) |
| 239 | { |
| 240 | LOGV("Creating JavaBBinder %p\n", this); |
| 241 | android_atomic_inc(&gNumLocalRefs); |
| 242 | incRefsCreated(env); |
| 243 | } |
| 244 | |
| 245 | bool checkSubclass(const void* subclassID) const |
| 246 | { |
| 247 | return subclassID == &gBinderOffsets; |
| 248 | } |
| 249 | |
| 250 | jobject object() const |
| 251 | { |
| 252 | return mObject; |
| 253 | } |
| 254 | |
| 255 | protected: |
| 256 | virtual ~JavaBBinder() |
| 257 | { |
| 258 | LOGV("Destroying JavaBBinder %p\n", this); |
| 259 | android_atomic_dec(&gNumLocalRefs); |
| 260 | JNIEnv* env = javavm_to_jnienv(mVM); |
| 261 | env->DeleteGlobalRef(mObject); |
| 262 | } |
| 263 | |
| 264 | virtual status_t onTransact( |
| 265 | uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags = 0) |
| 266 | { |
| 267 | JNIEnv* env = javavm_to_jnienv(mVM); |
| 268 | |
| 269 | LOGV("onTransact() on %p calling object %p in env %p vm %p\n", this, mObject, env, mVM); |
| 270 | |
Brad Fitzpatrick | 727de40 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 271 | IPCThreadState* thread_state = IPCThreadState::self(); |
| 272 | const int strict_policy_before = thread_state->getStrictModePolicy(); |
Brad Fitzpatrick | 0234376 | 2010-08-30 16:01:16 -0700 | [diff] [blame^] | 273 | thread_state->setLastTransactionBinderFlags(flags); |
Brad Fitzpatrick | 727de40 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 274 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 275 | //printf("Transact from %p to Java code sending: ", this); |
| 276 | //data.print(); |
| 277 | //printf("\n"); |
| 278 | jboolean res = env->CallBooleanMethod(mObject, gBinderOffsets.mExecTransact, |
| 279 | code, (int32_t)&data, (int32_t)reply, flags); |
| 280 | jthrowable excep = env->ExceptionOccurred(); |
Brad Fitzpatrick | 727de40 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 281 | |
| 282 | // Restore the Java binder thread's state if it changed while |
| 283 | // processing a call (as it would if the Parcel's header had a |
| 284 | // new policy mask and Parcel.enforceInterface() changed |
| 285 | // it...) |
| 286 | const int strict_policy_after = thread_state->getStrictModePolicy(); |
| 287 | if (strict_policy_after != strict_policy_before) { |
| 288 | // Our thread-local... |
| 289 | thread_state->setStrictModePolicy(strict_policy_before); |
| 290 | // And the Java-level thread-local... |
| 291 | set_dalvik_blockguard_policy(env, strict_policy_before); |
| 292 | } |
| 293 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 294 | if (excep) { |
| 295 | report_exception(env, excep, |
| 296 | "*** Uncaught remote exception! " |
| 297 | "(Exceptions are not yet supported across processes.)"); |
| 298 | res = JNI_FALSE; |
| 299 | |
| 300 | /* clean up JNI local ref -- we don't return to Java code */ |
| 301 | env->DeleteLocalRef(excep); |
| 302 | } |
| 303 | |
| 304 | //aout << "onTransact to Java code; result=" << res << endl |
| 305 | // << "Transact from " << this << " to Java code returning " |
| 306 | // << reply << ": " << *reply << endl; |
| 307 | return res != JNI_FALSE ? NO_ERROR : UNKNOWN_TRANSACTION; |
| 308 | } |
| 309 | |
| 310 | virtual status_t dump(int fd, const Vector<String16>& args) |
| 311 | { |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | private: |
| 316 | JavaVM* const mVM; |
| 317 | jobject const mObject; |
| 318 | }; |
| 319 | |
| 320 | // ---------------------------------------------------------------------------- |
| 321 | |
| 322 | class JavaBBinderHolder : public RefBase |
| 323 | { |
| 324 | public: |
| 325 | JavaBBinderHolder(JNIEnv* env, jobject object) |
| 326 | : mObject(object) |
| 327 | { |
| 328 | LOGV("Creating JavaBBinderHolder for Object %p\n", object); |
| 329 | } |
| 330 | ~JavaBBinderHolder() |
| 331 | { |
| 332 | LOGV("Destroying JavaBBinderHolder for Object %p\n", mObject); |
| 333 | } |
| 334 | |
| 335 | sp<JavaBBinder> get(JNIEnv* env) |
| 336 | { |
| 337 | AutoMutex _l(mLock); |
| 338 | sp<JavaBBinder> b = mBinder.promote(); |
| 339 | if (b == NULL) { |
| 340 | b = new JavaBBinder(env, mObject); |
| 341 | mBinder = b; |
| 342 | LOGV("Creating JavaBinder %p (refs %p) for Object %p, weakCount=%d\n", |
| 343 | b.get(), b->getWeakRefs(), mObject, b->getWeakRefs()->getWeakCount()); |
| 344 | } |
| 345 | |
| 346 | return b; |
| 347 | } |
| 348 | |
| 349 | sp<JavaBBinder> getExisting() |
| 350 | { |
| 351 | AutoMutex _l(mLock); |
| 352 | return mBinder.promote(); |
| 353 | } |
| 354 | |
| 355 | private: |
| 356 | Mutex mLock; |
| 357 | jobject mObject; |
| 358 | wp<JavaBBinder> mBinder; |
| 359 | }; |
| 360 | |
| 361 | // ---------------------------------------------------------------------------- |
| 362 | |
| 363 | class JavaDeathRecipient : public IBinder::DeathRecipient |
| 364 | { |
| 365 | public: |
| 366 | JavaDeathRecipient(JNIEnv* env, jobject object) |
| 367 | : mVM(jnienv_to_javavm(env)), mObject(env->NewGlobalRef(object)), |
| 368 | mHoldsRef(true) |
| 369 | { |
| 370 | incStrong(this); |
| 371 | android_atomic_inc(&gNumDeathRefs); |
| 372 | incRefsCreated(env); |
| 373 | } |
| 374 | |
| 375 | void binderDied(const wp<IBinder>& who) |
| 376 | { |
| 377 | JNIEnv* env = javavm_to_jnienv(mVM); |
| 378 | |
| 379 | LOGV("Receiving binderDied() on JavaDeathRecipient %p\n", this); |
| 380 | |
| 381 | env->CallStaticVoidMethod(gBinderProxyOffsets.mClass, |
| 382 | gBinderProxyOffsets.mSendDeathNotice, mObject); |
| 383 | jthrowable excep = env->ExceptionOccurred(); |
| 384 | if (excep) { |
| 385 | report_exception(env, excep, |
| 386 | "*** Uncaught exception returned from death notification!"); |
| 387 | } |
| 388 | |
| 389 | clearReference(); |
| 390 | } |
| 391 | |
| 392 | void clearReference() |
| 393 | { |
| 394 | bool release = false; |
| 395 | mLock.lock(); |
| 396 | if (mHoldsRef) { |
| 397 | mHoldsRef = false; |
| 398 | release = true; |
| 399 | } |
| 400 | mLock.unlock(); |
| 401 | if (release) { |
| 402 | decStrong(this); |
| 403 | } |
| 404 | } |
| 405 | |
| 406 | protected: |
| 407 | virtual ~JavaDeathRecipient() |
| 408 | { |
| 409 | //LOGI("Removing death ref: recipient=%p\n", mObject); |
| 410 | android_atomic_dec(&gNumDeathRefs); |
| 411 | JNIEnv* env = javavm_to_jnienv(mVM); |
| 412 | env->DeleteGlobalRef(mObject); |
| 413 | } |
| 414 | |
| 415 | private: |
| 416 | JavaVM* const mVM; |
| 417 | jobject const mObject; |
| 418 | Mutex mLock; |
| 419 | bool mHoldsRef; |
| 420 | }; |
| 421 | |
| 422 | // ---------------------------------------------------------------------------- |
| 423 | |
| 424 | namespace android { |
| 425 | |
| 426 | static void proxy_cleanup(const void* id, void* obj, void* cleanupCookie) |
| 427 | { |
| 428 | android_atomic_dec(&gNumProxyRefs); |
| 429 | JNIEnv* env = javavm_to_jnienv((JavaVM*)cleanupCookie); |
| 430 | env->DeleteGlobalRef((jobject)obj); |
| 431 | } |
| 432 | |
| 433 | static Mutex mProxyLock; |
| 434 | |
| 435 | jobject javaObjectForIBinder(JNIEnv* env, const sp<IBinder>& val) |
| 436 | { |
| 437 | if (val == NULL) return NULL; |
| 438 | |
| 439 | if (val->checkSubclass(&gBinderOffsets)) { |
| 440 | // One of our own! |
| 441 | jobject object = static_cast<JavaBBinder*>(val.get())->object(); |
| 442 | //printf("objectForBinder %p: it's our own %p!\n", val.get(), object); |
| 443 | return object; |
| 444 | } |
| 445 | |
| 446 | // For the rest of the function we will hold this lock, to serialize |
| 447 | // looking/creation of Java proxies for native Binder proxies. |
| 448 | AutoMutex _l(mProxyLock); |
| 449 | |
| 450 | // Someone else's... do we know about it? |
| 451 | jobject object = (jobject)val->findObject(&gBinderProxyOffsets); |
| 452 | if (object != NULL) { |
| 453 | jobject res = env->CallObjectMethod(object, gWeakReferenceOffsets.mGet); |
| 454 | if (res != NULL) { |
| 455 | LOGV("objectForBinder %p: found existing %p!\n", val.get(), res); |
| 456 | return res; |
| 457 | } |
| 458 | LOGV("Proxy object %p of IBinder %p no longer in working set!!!", object, val.get()); |
| 459 | android_atomic_dec(&gNumProxyRefs); |
| 460 | val->detachObject(&gBinderProxyOffsets); |
| 461 | env->DeleteGlobalRef(object); |
| 462 | } |
| 463 | |
| 464 | object = env->NewObject(gBinderProxyOffsets.mClass, gBinderProxyOffsets.mConstructor); |
| 465 | if (object != NULL) { |
| 466 | LOGV("objectForBinder %p: created new %p!\n", val.get(), object); |
| 467 | // The proxy holds a reference to the native object. |
| 468 | env->SetIntField(object, gBinderProxyOffsets.mObject, (int)val.get()); |
| 469 | val->incStrong(object); |
| 470 | |
| 471 | // The native object needs to hold a weak reference back to the |
| 472 | // proxy, so we can retrieve the same proxy if it is still active. |
| 473 | jobject refObject = env->NewGlobalRef( |
| 474 | env->GetObjectField(object, gBinderProxyOffsets.mSelf)); |
| 475 | val->attachObject(&gBinderProxyOffsets, refObject, |
| 476 | jnienv_to_javavm(env), proxy_cleanup); |
| 477 | |
| 478 | // Note that a new object reference has been created. |
| 479 | android_atomic_inc(&gNumProxyRefs); |
| 480 | incRefsCreated(env); |
| 481 | } |
| 482 | |
| 483 | return object; |
| 484 | } |
| 485 | |
| 486 | sp<IBinder> ibinderForJavaObject(JNIEnv* env, jobject obj) |
| 487 | { |
| 488 | if (obj == NULL) return NULL; |
| 489 | |
| 490 | if (env->IsInstanceOf(obj, gBinderOffsets.mClass)) { |
| 491 | JavaBBinderHolder* jbh = (JavaBBinderHolder*) |
| 492 | env->GetIntField(obj, gBinderOffsets.mObject); |
| 493 | return jbh != NULL ? jbh->get(env) : NULL; |
| 494 | } |
| 495 | |
| 496 | if (env->IsInstanceOf(obj, gBinderProxyOffsets.mClass)) { |
| 497 | return (IBinder*) |
| 498 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 499 | } |
| 500 | |
| 501 | LOGW("ibinderForJavaObject: %p is not a Binder object", obj); |
| 502 | return NULL; |
| 503 | } |
| 504 | |
| 505 | Parcel* parcelForJavaObject(JNIEnv* env, jobject obj) |
| 506 | { |
| 507 | if (obj) { |
| 508 | Parcel* p = (Parcel*)env->GetIntField(obj, gParcelOffsets.mObject); |
| 509 | if (p != NULL) { |
| 510 | return p; |
| 511 | } |
| 512 | jniThrowException(env, "java/lang/IllegalStateException", "Parcel has been finalized!"); |
| 513 | } |
| 514 | return NULL; |
| 515 | } |
| 516 | |
| 517 | jobject newFileDescriptor(JNIEnv* env, int fd) |
| 518 | { |
| 519 | jobject object = env->NewObject( |
| 520 | gFileDescriptorOffsets.mClass, gFileDescriptorOffsets.mConstructor); |
| 521 | if (object != NULL) { |
| 522 | //LOGI("Created new FileDescriptor %p with fd %d\n", object, fd); |
| 523 | env->SetIntField(object, gFileDescriptorOffsets.mDescriptor, fd); |
| 524 | } |
| 525 | return object; |
| 526 | } |
| 527 | |
| 528 | jobject newParcelFileDescriptor(JNIEnv* env, jobject fileDesc) |
| 529 | { |
| 530 | return env->NewObject( |
| 531 | gParcelFileDescriptorOffsets.mClass, gParcelFileDescriptorOffsets.mConstructor, fileDesc); |
| 532 | } |
| 533 | |
| 534 | void signalExceptionForError(JNIEnv* env, jobject obj, status_t err) |
| 535 | { |
| 536 | switch (err) { |
| 537 | case UNKNOWN_ERROR: |
| 538 | jniThrowException(env, "java/lang/RuntimeException", "Unknown error"); |
| 539 | break; |
| 540 | case NO_MEMORY: |
| 541 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 542 | break; |
| 543 | case INVALID_OPERATION: |
| 544 | jniThrowException(env, "java/lang/UnsupportedOperationException", NULL); |
| 545 | break; |
| 546 | case BAD_VALUE: |
| 547 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 548 | break; |
| 549 | case BAD_INDEX: |
| 550 | jniThrowException(env, "java/lang/IndexOutOfBoundsException", NULL); |
| 551 | break; |
| 552 | case BAD_TYPE: |
| 553 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 554 | break; |
| 555 | case NAME_NOT_FOUND: |
| 556 | jniThrowException(env, "java/util/NoSuchElementException", NULL); |
| 557 | break; |
| 558 | case PERMISSION_DENIED: |
| 559 | jniThrowException(env, "java/lang/SecurityException", NULL); |
| 560 | break; |
| 561 | case NOT_ENOUGH_DATA: |
| 562 | jniThrowException(env, "android/os/ParcelFormatException", "Not enough data"); |
| 563 | break; |
| 564 | case NO_INIT: |
| 565 | jniThrowException(env, "java/lang/RuntimeException", "Not initialized"); |
| 566 | break; |
| 567 | case ALREADY_EXISTS: |
| 568 | jniThrowException(env, "java/lang/RuntimeException", "Item already exists"); |
| 569 | break; |
| 570 | case DEAD_OBJECT: |
| 571 | jniThrowException(env, "android/os/DeadObjectException", NULL); |
| 572 | break; |
| 573 | case UNKNOWN_TRANSACTION: |
| 574 | jniThrowException(env, "java/lang/RuntimeException", "Unknown transaction code"); |
| 575 | break; |
| 576 | case FAILED_TRANSACTION: |
| 577 | LOGE("!!! FAILED BINDER TRANSACTION !!!"); |
| 578 | //jniThrowException(env, "java/lang/OutOfMemoryError", "Binder transaction too large"); |
| 579 | break; |
| 580 | default: |
| 581 | LOGE("Unknown binder error code. 0x%x", err); |
| 582 | } |
| 583 | } |
| 584 | |
| 585 | } |
| 586 | |
| 587 | // ---------------------------------------------------------------------------- |
| 588 | |
| 589 | static jint android_os_Binder_getCallingPid(JNIEnv* env, jobject clazz) |
| 590 | { |
| 591 | return IPCThreadState::self()->getCallingPid(); |
| 592 | } |
| 593 | |
| 594 | static jint android_os_Binder_getCallingUid(JNIEnv* env, jobject clazz) |
| 595 | { |
| 596 | return IPCThreadState::self()->getCallingUid(); |
| 597 | } |
| 598 | |
| 599 | static jlong android_os_Binder_clearCallingIdentity(JNIEnv* env, jobject clazz) |
| 600 | { |
| 601 | return IPCThreadState::self()->clearCallingIdentity(); |
| 602 | } |
| 603 | |
| 604 | static void android_os_Binder_restoreCallingIdentity(JNIEnv* env, jobject clazz, jlong token) |
| 605 | { |
| 606 | IPCThreadState::self()->restoreCallingIdentity(token); |
| 607 | } |
| 608 | |
Brad Fitzpatrick | 727de40 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 609 | static void android_os_Binder_setThreadStrictModePolicy(JNIEnv* env, jobject clazz, jint policyMask) |
| 610 | { |
| 611 | IPCThreadState::self()->setStrictModePolicy(policyMask); |
| 612 | } |
| 613 | |
| 614 | static jint android_os_Binder_getThreadStrictModePolicy(JNIEnv* env, jobject clazz) |
| 615 | { |
| 616 | return IPCThreadState::self()->getStrictModePolicy(); |
| 617 | } |
| 618 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 619 | static void android_os_Binder_flushPendingCommands(JNIEnv* env, jobject clazz) |
| 620 | { |
| 621 | IPCThreadState::self()->flushCommands(); |
| 622 | } |
| 623 | |
| 624 | static void android_os_Binder_init(JNIEnv* env, jobject clazz) |
| 625 | { |
| 626 | JavaBBinderHolder* jbh = new JavaBBinderHolder(env, clazz); |
| 627 | if (jbh == NULL) { |
| 628 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 629 | return; |
| 630 | } |
| 631 | LOGV("Java Binder %p: acquiring first ref on holder %p", clazz, jbh); |
| 632 | jbh->incStrong(clazz); |
| 633 | env->SetIntField(clazz, gBinderOffsets.mObject, (int)jbh); |
| 634 | } |
| 635 | |
| 636 | static void android_os_Binder_destroy(JNIEnv* env, jobject clazz) |
| 637 | { |
| 638 | JavaBBinderHolder* jbh = (JavaBBinderHolder*) |
| 639 | env->GetIntField(clazz, gBinderOffsets.mObject); |
Jeff Brown | 582763a | 2010-03-24 18:56:57 -0700 | [diff] [blame] | 640 | if (jbh != NULL) { |
| 641 | env->SetIntField(clazz, gBinderOffsets.mObject, 0); |
| 642 | LOGV("Java Binder %p: removing ref on holder %p", clazz, jbh); |
| 643 | jbh->decStrong(clazz); |
| 644 | } else { |
| 645 | // Encountering an uninitialized binder is harmless. All it means is that |
| 646 | // the Binder was only partially initialized when its finalizer ran and called |
| 647 | // destroy(). The Binder could be partially initialized for several reasons. |
| 648 | // For example, a Binder subclass constructor might have thrown an exception before |
| 649 | // it could delegate to its superclass's constructor. Consequently init() would |
| 650 | // not have been called and the holder pointer would remain NULL. |
| 651 | LOGV("Java Binder %p: ignoring uninitialized binder", clazz); |
| 652 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 653 | } |
| 654 | |
| 655 | // ---------------------------------------------------------------------------- |
| 656 | |
| 657 | static const JNINativeMethod gBinderMethods[] = { |
| 658 | /* name, signature, funcPtr */ |
| 659 | { "getCallingPid", "()I", (void*)android_os_Binder_getCallingPid }, |
| 660 | { "getCallingUid", "()I", (void*)android_os_Binder_getCallingUid }, |
| 661 | { "clearCallingIdentity", "()J", (void*)android_os_Binder_clearCallingIdentity }, |
| 662 | { "restoreCallingIdentity", "(J)V", (void*)android_os_Binder_restoreCallingIdentity }, |
Brad Fitzpatrick | 727de40 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 663 | { "setThreadStrictModePolicy", "(I)V", (void*)android_os_Binder_setThreadStrictModePolicy }, |
| 664 | { "getThreadStrictModePolicy", "()I", (void*)android_os_Binder_getThreadStrictModePolicy }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 665 | { "flushPendingCommands", "()V", (void*)android_os_Binder_flushPendingCommands }, |
| 666 | { "init", "()V", (void*)android_os_Binder_init }, |
| 667 | { "destroy", "()V", (void*)android_os_Binder_destroy } |
| 668 | }; |
| 669 | |
| 670 | const char* const kBinderPathName = "android/os/Binder"; |
| 671 | |
| 672 | static int int_register_android_os_Binder(JNIEnv* env) |
| 673 | { |
| 674 | jclass clazz; |
| 675 | |
| 676 | clazz = env->FindClass(kBinderPathName); |
| 677 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.Binder"); |
| 678 | |
| 679 | gBinderOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 680 | gBinderOffsets.mExecTransact |
| 681 | = env->GetMethodID(clazz, "execTransact", "(IIII)Z"); |
| 682 | assert(gBinderOffsets.mExecTransact); |
| 683 | |
| 684 | gBinderOffsets.mObject |
| 685 | = env->GetFieldID(clazz, "mObject", "I"); |
| 686 | assert(gBinderOffsets.mObject); |
| 687 | |
| 688 | return AndroidRuntime::registerNativeMethods( |
| 689 | env, kBinderPathName, |
| 690 | gBinderMethods, NELEM(gBinderMethods)); |
| 691 | } |
| 692 | |
| 693 | // **************************************************************************** |
| 694 | // **************************************************************************** |
| 695 | // **************************************************************************** |
| 696 | |
| 697 | namespace android { |
| 698 | |
| 699 | jint android_os_Debug_getLocalObjectCount(JNIEnv* env, jobject clazz) |
| 700 | { |
| 701 | return gNumLocalRefs; |
| 702 | } |
| 703 | |
| 704 | jint android_os_Debug_getProxyObjectCount(JNIEnv* env, jobject clazz) |
| 705 | { |
| 706 | return gNumProxyRefs; |
| 707 | } |
| 708 | |
| 709 | jint android_os_Debug_getDeathObjectCount(JNIEnv* env, jobject clazz) |
| 710 | { |
| 711 | return gNumDeathRefs; |
| 712 | } |
| 713 | |
| 714 | } |
| 715 | |
| 716 | // **************************************************************************** |
| 717 | // **************************************************************************** |
| 718 | // **************************************************************************** |
| 719 | |
| 720 | static jobject android_os_BinderInternal_getContextObject(JNIEnv* env, jobject clazz) |
| 721 | { |
| 722 | sp<IBinder> b = ProcessState::self()->getContextObject(NULL); |
| 723 | return javaObjectForIBinder(env, b); |
| 724 | } |
| 725 | |
| 726 | static void android_os_BinderInternal_joinThreadPool(JNIEnv* env, jobject clazz) |
| 727 | { |
| 728 | sp<IBinder> b = ProcessState::self()->getContextObject(NULL); |
| 729 | android::IPCThreadState::self()->joinThreadPool(); |
| 730 | } |
| 731 | |
Dianne Hackborn | 887f355 | 2009-12-07 17:59:37 -0800 | [diff] [blame] | 732 | static void android_os_BinderInternal_disableBackgroundScheduling(JNIEnv* env, |
| 733 | jobject clazz, jboolean disable) |
| 734 | { |
| 735 | IPCThreadState::disableBackgroundScheduling(disable ? true : false); |
| 736 | } |
| 737 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 738 | static void android_os_BinderInternal_handleGc(JNIEnv* env, jobject clazz) |
| 739 | { |
| 740 | LOGV("Gc has executed, clearing binder ops"); |
| 741 | android_atomic_and(0, &gNumRefsCreated); |
| 742 | } |
| 743 | |
| 744 | // ---------------------------------------------------------------------------- |
| 745 | |
| 746 | static const JNINativeMethod gBinderInternalMethods[] = { |
| 747 | /* name, signature, funcPtr */ |
| 748 | { "getContextObject", "()Landroid/os/IBinder;", (void*)android_os_BinderInternal_getContextObject }, |
| 749 | { "joinThreadPool", "()V", (void*)android_os_BinderInternal_joinThreadPool }, |
Dianne Hackborn | 887f355 | 2009-12-07 17:59:37 -0800 | [diff] [blame] | 750 | { "disableBackgroundScheduling", "(Z)V", (void*)android_os_BinderInternal_disableBackgroundScheduling }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 751 | { "handleGc", "()V", (void*)android_os_BinderInternal_handleGc } |
| 752 | }; |
| 753 | |
| 754 | const char* const kBinderInternalPathName = "com/android/internal/os/BinderInternal"; |
| 755 | |
| 756 | static int int_register_android_os_BinderInternal(JNIEnv* env) |
| 757 | { |
| 758 | jclass clazz; |
| 759 | |
| 760 | clazz = env->FindClass(kBinderInternalPathName); |
| 761 | LOG_FATAL_IF(clazz == NULL, "Unable to find class com.android.internal.os.BinderInternal"); |
| 762 | |
| 763 | gBinderInternalOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 764 | gBinderInternalOffsets.mForceGc |
| 765 | = env->GetStaticMethodID(clazz, "forceBinderGc", "()V"); |
| 766 | assert(gBinderInternalOffsets.mForceGc); |
| 767 | |
| 768 | return AndroidRuntime::registerNativeMethods( |
| 769 | env, kBinderInternalPathName, |
| 770 | gBinderInternalMethods, NELEM(gBinderInternalMethods)); |
| 771 | } |
| 772 | |
| 773 | // **************************************************************************** |
| 774 | // **************************************************************************** |
| 775 | // **************************************************************************** |
| 776 | |
| 777 | static jboolean android_os_BinderProxy_pingBinder(JNIEnv* env, jobject obj) |
| 778 | { |
| 779 | IBinder* target = (IBinder*) |
| 780 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 781 | if (target == NULL) { |
| 782 | return JNI_FALSE; |
| 783 | } |
| 784 | status_t err = target->pingBinder(); |
| 785 | return err == NO_ERROR ? JNI_TRUE : JNI_FALSE; |
| 786 | } |
| 787 | |
| 788 | static jstring android_os_BinderProxy_getInterfaceDescriptor(JNIEnv* env, jobject obj) |
| 789 | { |
| 790 | IBinder* target = (IBinder*) env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 791 | if (target != NULL) { |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 792 | const String16& desc = target->getInterfaceDescriptor(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 793 | return env->NewString(desc.string(), desc.size()); |
| 794 | } |
| 795 | jniThrowException(env, "java/lang/RuntimeException", |
| 796 | "No binder found for object"); |
| 797 | return NULL; |
| 798 | } |
| 799 | |
| 800 | static jboolean android_os_BinderProxy_isBinderAlive(JNIEnv* env, jobject obj) |
| 801 | { |
| 802 | IBinder* target = (IBinder*) |
| 803 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 804 | if (target == NULL) { |
| 805 | return JNI_FALSE; |
| 806 | } |
| 807 | bool alive = target->isBinderAlive(); |
| 808 | return alive ? JNI_TRUE : JNI_FALSE; |
| 809 | } |
| 810 | |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 811 | static int getprocname(pid_t pid, char *buf, size_t len) { |
| 812 | char filename[20]; |
| 813 | FILE *f; |
| 814 | |
| 815 | sprintf(filename, "/proc/%d/cmdline", pid); |
| 816 | f = fopen(filename, "r"); |
| 817 | if (!f) { *buf = '\0'; return 1; } |
| 818 | if (!fgets(buf, len, f)) { *buf = '\0'; return 2; } |
| 819 | fclose(f); |
| 820 | return 0; |
| 821 | } |
| 822 | |
| 823 | static bool push_eventlog_string(char** pos, const char* end, const char* str) { |
| 824 | jint len = strlen(str); |
| 825 | int space_needed = 1 + sizeof(len) + len; |
| 826 | if (end - *pos < space_needed) { |
| 827 | LOGW("not enough space for string. remain=%d; needed=%d", |
| 828 | (end - *pos), space_needed); |
| 829 | return false; |
| 830 | } |
| 831 | **pos = EVENT_TYPE_STRING; |
| 832 | (*pos)++; |
| 833 | memcpy(*pos, &len, sizeof(len)); |
| 834 | *pos += sizeof(len); |
| 835 | memcpy(*pos, str, len); |
| 836 | *pos += len; |
| 837 | return true; |
| 838 | } |
| 839 | |
| 840 | static bool push_eventlog_int(char** pos, const char* end, jint val) { |
| 841 | int space_needed = 1 + sizeof(val); |
| 842 | if (end - *pos < space_needed) { |
| 843 | LOGW("not enough space for int. remain=%d; needed=%d", |
| 844 | (end - *pos), space_needed); |
| 845 | return false; |
| 846 | } |
| 847 | **pos = EVENT_TYPE_INT; |
| 848 | (*pos)++; |
| 849 | memcpy(*pos, &val, sizeof(val)); |
| 850 | *pos += sizeof(val); |
| 851 | return true; |
| 852 | } |
| 853 | |
| 854 | // From frameworks/base/core/java/android/content/EventLogTags.logtags: |
| 855 | #define LOGTAG_BINDER_OPERATION 52004 |
| 856 | |
| 857 | static void conditionally_log_binder_call(int64_t start_millis, |
| 858 | IBinder* target, jint code) { |
| 859 | int duration_ms = static_cast<int>(uptimeMillis() - start_millis); |
| 860 | |
| 861 | int sample_percent; |
| 862 | if (duration_ms >= 500) { |
| 863 | sample_percent = 100; |
| 864 | } else { |
| 865 | sample_percent = 100 * duration_ms / 500; |
| 866 | if (sample_percent == 0) { |
| 867 | return; |
| 868 | } |
| 869 | if (sample_percent < (random() % 100 + 1)) { |
| 870 | return; |
| 871 | } |
| 872 | } |
| 873 | |
| 874 | char process_name[40]; |
| 875 | getprocname(getpid(), process_name, sizeof(process_name)); |
| 876 | String8 desc(target->getInterfaceDescriptor()); |
| 877 | |
| 878 | char buf[LOGGER_ENTRY_MAX_PAYLOAD]; |
| 879 | buf[0] = EVENT_TYPE_LIST; |
| 880 | buf[1] = 5; |
| 881 | char* pos = &buf[2]; |
| 882 | char* end = &buf[LOGGER_ENTRY_MAX_PAYLOAD - 1]; // leave room for final \n |
| 883 | if (!push_eventlog_string(&pos, end, desc.string())) return; |
| 884 | if (!push_eventlog_int(&pos, end, code)) return; |
| 885 | if (!push_eventlog_int(&pos, end, duration_ms)) return; |
| 886 | if (!push_eventlog_string(&pos, end, process_name)) return; |
| 887 | if (!push_eventlog_int(&pos, end, sample_percent)) return; |
| 888 | *(pos++) = '\n'; // conventional with EVENT_TYPE_LIST apparently. |
| 889 | android_bWriteLog(LOGTAG_BINDER_OPERATION, buf, pos - buf); |
| 890 | } |
| 891 | |
Brad Fitzpatrick | ad8fd28 | 2010-03-25 02:01:32 -0700 | [diff] [blame] | 892 | // We only measure binder call durations to potentially log them if |
| 893 | // we're on the main thread. Unfortunately sim-eng doesn't seem to |
| 894 | // have gettid, so we just ignore this and don't log if we can't |
| 895 | // get the thread id. |
| 896 | static bool should_time_binder_calls() { |
Brad Fitzpatrick | 5348c01 | 2010-03-25 12:43:56 -0700 | [diff] [blame] | 897 | #ifdef HAVE_GETTID |
| 898 | return (getpid() == androidGetTid()); |
Brad Fitzpatrick | ad8fd28 | 2010-03-25 02:01:32 -0700 | [diff] [blame] | 899 | #else |
| 900 | #warning no gettid(), so not logging Binder calls... |
| 901 | return false; |
| 902 | #endif |
| 903 | } |
| 904 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 905 | static jboolean android_os_BinderProxy_transact(JNIEnv* env, jobject obj, |
| 906 | jint code, jobject dataObj, |
| 907 | jobject replyObj, jint flags) |
| 908 | { |
| 909 | if (dataObj == NULL) { |
| 910 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 911 | return JNI_FALSE; |
| 912 | } |
| 913 | |
| 914 | Parcel* data = parcelForJavaObject(env, dataObj); |
| 915 | if (data == NULL) { |
| 916 | return JNI_FALSE; |
| 917 | } |
| 918 | Parcel* reply = parcelForJavaObject(env, replyObj); |
| 919 | if (reply == NULL && replyObj != NULL) { |
| 920 | return JNI_FALSE; |
| 921 | } |
| 922 | |
| 923 | IBinder* target = (IBinder*) |
| 924 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 925 | if (target == NULL) { |
| 926 | jniThrowException(env, "java/lang/IllegalStateException", "Binder has been finalized!"); |
| 927 | return JNI_FALSE; |
| 928 | } |
| 929 | |
| 930 | LOGV("Java code calling transact on %p in Java object %p with code %d\n", |
| 931 | target, obj, code); |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 932 | |
| 933 | // 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] | 934 | // But if we don't |
| 935 | const bool time_binder_calls = should_time_binder_calls(); |
| 936 | |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 937 | int64_t start_millis; |
Brad Fitzpatrick | ad8fd28 | 2010-03-25 02:01:32 -0700 | [diff] [blame] | 938 | if (time_binder_calls) { |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 939 | start_millis = uptimeMillis(); |
| 940 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 941 | //printf("Transact from Java code to %p sending: ", target); data->print(); |
| 942 | status_t err = target->transact(code, *data, reply, flags); |
| 943 | //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] | 944 | if (time_binder_calls) { |
Brad Fitzpatrick | 2c5da31 | 2010-03-24 16:14:09 -0700 | [diff] [blame] | 945 | conditionally_log_binder_call(start_millis, target, code); |
| 946 | } |
| 947 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 948 | if (err == NO_ERROR) { |
| 949 | return JNI_TRUE; |
| 950 | } else if (err == UNKNOWN_TRANSACTION) { |
| 951 | return JNI_FALSE; |
| 952 | } |
| 953 | |
| 954 | signalExceptionForError(env, obj, err); |
| 955 | return JNI_FALSE; |
| 956 | } |
| 957 | |
| 958 | static void android_os_BinderProxy_linkToDeath(JNIEnv* env, jobject obj, |
| 959 | jobject recipient, jint flags) |
| 960 | { |
| 961 | if (recipient == NULL) { |
| 962 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 963 | return; |
| 964 | } |
| 965 | |
| 966 | IBinder* target = (IBinder*) |
| 967 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 968 | if (target == NULL) { |
| 969 | LOGW("Binder has been finalized when calling linkToDeath() with recip=%p)\n", recipient); |
| 970 | assert(false); |
| 971 | } |
| 972 | |
| 973 | LOGV("linkToDeath: binder=%p recipient=%p\n", target, recipient); |
| 974 | |
| 975 | if (!target->localBinder()) { |
| 976 | sp<JavaDeathRecipient> jdr = new JavaDeathRecipient(env, recipient); |
| 977 | status_t err = target->linkToDeath(jdr, recipient, flags); |
| 978 | if (err != NO_ERROR) { |
| 979 | // Failure adding the death recipient, so clear its reference |
| 980 | // now. |
| 981 | jdr->clearReference(); |
| 982 | signalExceptionForError(env, obj, err); |
| 983 | } |
| 984 | } |
| 985 | } |
| 986 | |
| 987 | static jboolean android_os_BinderProxy_unlinkToDeath(JNIEnv* env, jobject obj, |
| 988 | jobject recipient, jint flags) |
| 989 | { |
| 990 | jboolean res = JNI_FALSE; |
| 991 | if (recipient == NULL) { |
| 992 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 993 | return res; |
| 994 | } |
| 995 | |
| 996 | IBinder* target = (IBinder*) |
| 997 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 998 | if (target == NULL) { |
| 999 | LOGW("Binder has been finalized when calling linkToDeath() with recip=%p)\n", recipient); |
| 1000 | return JNI_FALSE; |
| 1001 | } |
| 1002 | |
| 1003 | LOGV("unlinkToDeath: binder=%p recipient=%p\n", target, recipient); |
| 1004 | |
| 1005 | if (!target->localBinder()) { |
| 1006 | wp<IBinder::DeathRecipient> dr; |
| 1007 | status_t err = target->unlinkToDeath(NULL, recipient, flags, &dr); |
| 1008 | if (err == NO_ERROR && dr != NULL) { |
| 1009 | sp<IBinder::DeathRecipient> sdr = dr.promote(); |
| 1010 | JavaDeathRecipient* jdr = static_cast<JavaDeathRecipient*>(sdr.get()); |
| 1011 | if (jdr != NULL) { |
| 1012 | jdr->clearReference(); |
| 1013 | } |
| 1014 | } |
| 1015 | if (err == NO_ERROR || err == DEAD_OBJECT) { |
| 1016 | res = JNI_TRUE; |
| 1017 | } else { |
| 1018 | jniThrowException(env, "java/util/NoSuchElementException", |
| 1019 | "Death link does not exist"); |
| 1020 | } |
| 1021 | } |
| 1022 | |
| 1023 | return res; |
| 1024 | } |
| 1025 | |
| 1026 | static void android_os_BinderProxy_destroy(JNIEnv* env, jobject obj) |
| 1027 | { |
| 1028 | IBinder* b = (IBinder*) |
| 1029 | env->GetIntField(obj, gBinderProxyOffsets.mObject); |
| 1030 | LOGV("Destroying BinderProxy %p: binder=%p\n", obj, b); |
| 1031 | env->SetIntField(obj, gBinderProxyOffsets.mObject, 0); |
| 1032 | b->decStrong(obj); |
| 1033 | IPCThreadState::self()->flushCommands(); |
| 1034 | } |
| 1035 | |
| 1036 | // ---------------------------------------------------------------------------- |
| 1037 | |
| 1038 | static const JNINativeMethod gBinderProxyMethods[] = { |
| 1039 | /* name, signature, funcPtr */ |
| 1040 | {"pingBinder", "()Z", (void*)android_os_BinderProxy_pingBinder}, |
| 1041 | {"isBinderAlive", "()Z", (void*)android_os_BinderProxy_isBinderAlive}, |
| 1042 | {"getInterfaceDescriptor", "()Ljava/lang/String;", (void*)android_os_BinderProxy_getInterfaceDescriptor}, |
| 1043 | {"transact", "(ILandroid/os/Parcel;Landroid/os/Parcel;I)Z", (void*)android_os_BinderProxy_transact}, |
| 1044 | {"linkToDeath", "(Landroid/os/IBinder$DeathRecipient;I)V", (void*)android_os_BinderProxy_linkToDeath}, |
| 1045 | {"unlinkToDeath", "(Landroid/os/IBinder$DeathRecipient;I)Z", (void*)android_os_BinderProxy_unlinkToDeath}, |
| 1046 | {"destroy", "()V", (void*)android_os_BinderProxy_destroy}, |
| 1047 | }; |
| 1048 | |
| 1049 | const char* const kBinderProxyPathName = "android/os/BinderProxy"; |
| 1050 | |
| 1051 | static int int_register_android_os_BinderProxy(JNIEnv* env) |
| 1052 | { |
| 1053 | jclass clazz; |
| 1054 | |
| 1055 | clazz = env->FindClass("java/lang/ref/WeakReference"); |
| 1056 | LOG_FATAL_IF(clazz == NULL, "Unable to find class java.lang.ref.WeakReference"); |
| 1057 | gWeakReferenceOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1058 | gWeakReferenceOffsets.mGet |
| 1059 | = env->GetMethodID(clazz, "get", "()Ljava/lang/Object;"); |
| 1060 | assert(gWeakReferenceOffsets.mGet); |
| 1061 | |
| 1062 | clazz = env->FindClass("java/lang/Error"); |
| 1063 | LOG_FATAL_IF(clazz == NULL, "Unable to find class java.lang.Error"); |
| 1064 | gErrorOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1065 | |
| 1066 | clazz = env->FindClass(kBinderProxyPathName); |
| 1067 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.BinderProxy"); |
| 1068 | |
| 1069 | gBinderProxyOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1070 | gBinderProxyOffsets.mConstructor |
| 1071 | = env->GetMethodID(clazz, "<init>", "()V"); |
| 1072 | assert(gBinderProxyOffsets.mConstructor); |
| 1073 | gBinderProxyOffsets.mSendDeathNotice |
| 1074 | = env->GetStaticMethodID(clazz, "sendDeathNotice", "(Landroid/os/IBinder$DeathRecipient;)V"); |
| 1075 | assert(gBinderProxyOffsets.mSendDeathNotice); |
| 1076 | |
| 1077 | gBinderProxyOffsets.mObject |
| 1078 | = env->GetFieldID(clazz, "mObject", "I"); |
| 1079 | assert(gBinderProxyOffsets.mObject); |
| 1080 | gBinderProxyOffsets.mSelf |
| 1081 | = env->GetFieldID(clazz, "mSelf", "Ljava/lang/ref/WeakReference;"); |
| 1082 | assert(gBinderProxyOffsets.mSelf); |
| 1083 | |
| 1084 | return AndroidRuntime::registerNativeMethods( |
| 1085 | env, kBinderProxyPathName, |
| 1086 | gBinderProxyMethods, NELEM(gBinderProxyMethods)); |
| 1087 | } |
| 1088 | |
| 1089 | // **************************************************************************** |
| 1090 | // **************************************************************************** |
| 1091 | // **************************************************************************** |
| 1092 | |
| 1093 | static jint android_os_Parcel_dataSize(JNIEnv* env, jobject clazz) |
| 1094 | { |
| 1095 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1096 | return parcel ? parcel->dataSize() : 0; |
| 1097 | } |
| 1098 | |
| 1099 | static jint android_os_Parcel_dataAvail(JNIEnv* env, jobject clazz) |
| 1100 | { |
| 1101 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1102 | return parcel ? parcel->dataAvail() : 0; |
| 1103 | } |
| 1104 | |
| 1105 | static jint android_os_Parcel_dataPosition(JNIEnv* env, jobject clazz) |
| 1106 | { |
| 1107 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1108 | return parcel ? parcel->dataPosition() : 0; |
| 1109 | } |
| 1110 | |
| 1111 | static jint android_os_Parcel_dataCapacity(JNIEnv* env, jobject clazz) |
| 1112 | { |
| 1113 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1114 | return parcel ? parcel->dataCapacity() : 0; |
| 1115 | } |
| 1116 | |
| 1117 | static void android_os_Parcel_setDataSize(JNIEnv* env, jobject clazz, jint size) |
| 1118 | { |
| 1119 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1120 | if (parcel != NULL) { |
| 1121 | const status_t err = parcel->setDataSize(size); |
| 1122 | if (err != NO_ERROR) { |
| 1123 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1124 | } |
| 1125 | } |
| 1126 | } |
| 1127 | |
| 1128 | static void android_os_Parcel_setDataPosition(JNIEnv* env, jobject clazz, jint pos) |
| 1129 | { |
| 1130 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1131 | if (parcel != NULL) { |
| 1132 | parcel->setDataPosition(pos); |
| 1133 | } |
| 1134 | } |
| 1135 | |
| 1136 | static void android_os_Parcel_setDataCapacity(JNIEnv* env, jobject clazz, jint size) |
| 1137 | { |
| 1138 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1139 | if (parcel != NULL) { |
| 1140 | const status_t err = parcel->setDataCapacity(size); |
| 1141 | if (err != NO_ERROR) { |
| 1142 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1143 | } |
| 1144 | } |
| 1145 | } |
| 1146 | |
| 1147 | static void android_os_Parcel_writeNative(JNIEnv* env, jobject clazz, |
| 1148 | jobject data, jint offset, |
| 1149 | jint length) |
| 1150 | { |
| 1151 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1152 | if (parcel == NULL) { |
| 1153 | return; |
| 1154 | } |
| 1155 | void *dest; |
| 1156 | |
| 1157 | const status_t err = parcel->writeInt32(length); |
| 1158 | if (err != NO_ERROR) { |
| 1159 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1160 | } |
| 1161 | |
| 1162 | dest = parcel->writeInplace(length); |
| 1163 | |
| 1164 | if (dest == NULL) { |
| 1165 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1166 | return; |
| 1167 | } |
| 1168 | |
| 1169 | jbyte* ar = (jbyte*)env->GetPrimitiveArrayCritical((jarray)data, 0); |
| 1170 | if (ar) { |
| 1171 | memcpy(dest, ar, length); |
| 1172 | env->ReleasePrimitiveArrayCritical((jarray)data, ar, 0); |
| 1173 | } |
| 1174 | } |
| 1175 | |
| 1176 | |
| 1177 | static void android_os_Parcel_writeInt(JNIEnv* env, jobject clazz, jint val) |
| 1178 | { |
| 1179 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1180 | if (parcel != NULL) { |
| 1181 | const status_t err = parcel->writeInt32(val); |
| 1182 | if (err != NO_ERROR) { |
| 1183 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1184 | } |
| 1185 | } |
| 1186 | } |
| 1187 | |
| 1188 | static void android_os_Parcel_writeLong(JNIEnv* env, jobject clazz, jlong val) |
| 1189 | { |
| 1190 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1191 | if (parcel != NULL) { |
| 1192 | const status_t err = parcel->writeInt64(val); |
| 1193 | if (err != NO_ERROR) { |
| 1194 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1195 | } |
| 1196 | } |
| 1197 | } |
| 1198 | |
| 1199 | static void android_os_Parcel_writeFloat(JNIEnv* env, jobject clazz, jfloat val) |
| 1200 | { |
| 1201 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1202 | if (parcel != NULL) { |
| 1203 | const status_t err = parcel->writeFloat(val); |
| 1204 | if (err != NO_ERROR) { |
| 1205 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1206 | } |
| 1207 | } |
| 1208 | } |
| 1209 | |
| 1210 | static void android_os_Parcel_writeDouble(JNIEnv* env, jobject clazz, jdouble val) |
| 1211 | { |
| 1212 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1213 | if (parcel != NULL) { |
| 1214 | const status_t err = parcel->writeDouble(val); |
| 1215 | if (err != NO_ERROR) { |
| 1216 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1217 | } |
| 1218 | } |
| 1219 | } |
| 1220 | |
| 1221 | static void android_os_Parcel_writeString(JNIEnv* env, jobject clazz, jstring val) |
| 1222 | { |
| 1223 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1224 | if (parcel != NULL) { |
| 1225 | status_t err = NO_MEMORY; |
| 1226 | if (val) { |
| 1227 | const jchar* str = env->GetStringCritical(val, 0); |
| 1228 | if (str) { |
| 1229 | err = parcel->writeString16(str, env->GetStringLength(val)); |
| 1230 | env->ReleaseStringCritical(val, str); |
| 1231 | } |
| 1232 | } else { |
| 1233 | err = parcel->writeString16(NULL, 0); |
| 1234 | } |
| 1235 | if (err != NO_ERROR) { |
| 1236 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1237 | } |
| 1238 | } |
| 1239 | } |
| 1240 | |
| 1241 | static void android_os_Parcel_writeStrongBinder(JNIEnv* env, jobject clazz, jobject object) |
| 1242 | { |
| 1243 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1244 | if (parcel != NULL) { |
| 1245 | const status_t err = parcel->writeStrongBinder(ibinderForJavaObject(env, object)); |
| 1246 | if (err != NO_ERROR) { |
| 1247 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1248 | } |
| 1249 | } |
| 1250 | } |
| 1251 | |
| 1252 | static void android_os_Parcel_writeFileDescriptor(JNIEnv* env, jobject clazz, jobject object) |
| 1253 | { |
| 1254 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1255 | if (parcel != NULL) { |
| 1256 | const status_t err = parcel->writeDupFileDescriptor( |
| 1257 | env->GetIntField(object, gFileDescriptorOffsets.mDescriptor)); |
| 1258 | if (err != NO_ERROR) { |
| 1259 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1260 | } |
| 1261 | } |
| 1262 | } |
| 1263 | |
| 1264 | static jbyteArray android_os_Parcel_createByteArray(JNIEnv* env, jobject clazz) |
| 1265 | { |
| 1266 | jbyteArray ret = NULL; |
| 1267 | |
| 1268 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1269 | if (parcel != NULL) { |
| 1270 | int32_t len = parcel->readInt32(); |
| 1271 | |
| 1272 | // sanity check the stored length against the true data size |
| 1273 | if (len >= 0 && len <= (int32_t)parcel->dataAvail()) { |
| 1274 | ret = env->NewByteArray(len); |
| 1275 | |
| 1276 | if (ret != NULL) { |
| 1277 | jbyte* a2 = (jbyte*)env->GetPrimitiveArrayCritical(ret, 0); |
| 1278 | if (a2) { |
| 1279 | const void* data = parcel->readInplace(len); |
| 1280 | memcpy(a2, data, len); |
| 1281 | env->ReleasePrimitiveArrayCritical(ret, a2, 0); |
| 1282 | } |
| 1283 | } |
| 1284 | } |
| 1285 | } |
| 1286 | |
| 1287 | return ret; |
| 1288 | } |
| 1289 | |
| 1290 | static jint android_os_Parcel_readInt(JNIEnv* env, jobject clazz) |
| 1291 | { |
| 1292 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1293 | if (parcel != NULL) { |
| 1294 | return parcel->readInt32(); |
| 1295 | } |
| 1296 | return 0; |
| 1297 | } |
| 1298 | |
| 1299 | static jlong android_os_Parcel_readLong(JNIEnv* env, jobject clazz) |
| 1300 | { |
| 1301 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1302 | if (parcel != NULL) { |
| 1303 | return parcel->readInt64(); |
| 1304 | } |
| 1305 | return 0; |
| 1306 | } |
| 1307 | |
| 1308 | static jfloat android_os_Parcel_readFloat(JNIEnv* env, jobject clazz) |
| 1309 | { |
| 1310 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1311 | if (parcel != NULL) { |
| 1312 | return parcel->readFloat(); |
| 1313 | } |
| 1314 | return 0; |
| 1315 | } |
| 1316 | |
| 1317 | static jdouble android_os_Parcel_readDouble(JNIEnv* env, jobject clazz) |
| 1318 | { |
| 1319 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1320 | if (parcel != NULL) { |
| 1321 | return parcel->readDouble(); |
| 1322 | } |
| 1323 | return 0; |
| 1324 | } |
| 1325 | |
| 1326 | static jstring android_os_Parcel_readString(JNIEnv* env, jobject clazz) |
| 1327 | { |
| 1328 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1329 | if (parcel != NULL) { |
| 1330 | size_t len; |
| 1331 | const char16_t* str = parcel->readString16Inplace(&len); |
| 1332 | if (str) { |
| 1333 | return env->NewString(str, len); |
| 1334 | } |
| 1335 | return NULL; |
| 1336 | } |
| 1337 | return NULL; |
| 1338 | } |
| 1339 | |
| 1340 | static jobject android_os_Parcel_readStrongBinder(JNIEnv* env, jobject clazz) |
| 1341 | { |
| 1342 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1343 | if (parcel != NULL) { |
| 1344 | return javaObjectForIBinder(env, parcel->readStrongBinder()); |
| 1345 | } |
| 1346 | return NULL; |
| 1347 | } |
| 1348 | |
| 1349 | static jobject android_os_Parcel_readFileDescriptor(JNIEnv* env, jobject clazz) |
| 1350 | { |
| 1351 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1352 | if (parcel != NULL) { |
| 1353 | int fd = parcel->readFileDescriptor(); |
| 1354 | if (fd < 0) return NULL; |
| 1355 | fd = dup(fd); |
| 1356 | if (fd < 0) return NULL; |
| 1357 | jobject object = env->NewObject( |
| 1358 | gFileDescriptorOffsets.mClass, gFileDescriptorOffsets.mConstructor); |
| 1359 | if (object != NULL) { |
| 1360 | //LOGI("Created new FileDescriptor %p with fd %d\n", object, fd); |
| 1361 | env->SetIntField(object, gFileDescriptorOffsets.mDescriptor, fd); |
| 1362 | } |
| 1363 | return object; |
| 1364 | } |
| 1365 | return NULL; |
| 1366 | } |
| 1367 | |
| 1368 | static jobject android_os_Parcel_openFileDescriptor(JNIEnv* env, jobject clazz, |
| 1369 | jstring name, jint mode) |
| 1370 | { |
| 1371 | if (name == NULL) { |
| 1372 | jniThrowException(env, "java/lang/NullPointerException", NULL); |
| 1373 | return NULL; |
| 1374 | } |
| 1375 | const jchar* str = env->GetStringCritical(name, 0); |
| 1376 | if (str == NULL) { |
| 1377 | // Whatever, whatever. |
| 1378 | jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| 1379 | return NULL; |
| 1380 | } |
| 1381 | String8 name8(str, env->GetStringLength(name)); |
| 1382 | env->ReleaseStringCritical(name, str); |
| 1383 | int flags=0; |
| 1384 | switch (mode&0x30000000) { |
| 1385 | case 0: |
| 1386 | case 0x10000000: |
| 1387 | flags = O_RDONLY; |
| 1388 | break; |
| 1389 | case 0x20000000: |
| 1390 | flags = O_WRONLY; |
| 1391 | break; |
| 1392 | case 0x30000000: |
| 1393 | flags = O_RDWR; |
| 1394 | break; |
| 1395 | } |
| 1396 | |
| 1397 | if (mode&0x08000000) flags |= O_CREAT; |
| 1398 | if (mode&0x04000000) flags |= O_TRUNC; |
| 1399 | if (mode&0x02000000) flags |= O_APPEND; |
| 1400 | |
| 1401 | int realMode = S_IRWXU|S_IRWXG; |
| 1402 | if (mode&0x00000001) realMode |= S_IROTH; |
| 1403 | if (mode&0x00000002) realMode |= S_IWOTH; |
| 1404 | |
| 1405 | int fd = open(name8.string(), flags, realMode); |
| 1406 | if (fd < 0) { |
| 1407 | jniThrowException(env, "java/io/FileNotFoundException", NULL); |
| 1408 | return NULL; |
| 1409 | } |
| 1410 | jobject object = newFileDescriptor(env, fd); |
| 1411 | if (object == NULL) { |
| 1412 | close(fd); |
| 1413 | } |
| 1414 | return object; |
| 1415 | } |
| 1416 | |
| 1417 | static void android_os_Parcel_closeFileDescriptor(JNIEnv* env, jobject clazz, jobject object) |
| 1418 | { |
| 1419 | int fd = env->GetIntField(object, gFileDescriptorOffsets.mDescriptor); |
| 1420 | if (fd >= 0) { |
| 1421 | env->SetIntField(object, gFileDescriptorOffsets.mDescriptor, -1); |
| 1422 | //LOGI("Closing ParcelFileDescriptor %d\n", fd); |
| 1423 | close(fd); |
| 1424 | } |
| 1425 | } |
| 1426 | |
| 1427 | static void android_os_Parcel_freeBuffer(JNIEnv* env, jobject clazz) |
| 1428 | { |
| 1429 | int32_t own = env->GetIntField(clazz, gParcelOffsets.mOwnObject); |
| 1430 | if (own) { |
| 1431 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1432 | if (parcel != NULL) { |
| 1433 | //LOGI("Parcel.freeBuffer() called for C++ Parcel %p\n", parcel); |
| 1434 | parcel->freeData(); |
| 1435 | } |
| 1436 | } |
| 1437 | } |
| 1438 | |
| 1439 | static void android_os_Parcel_init(JNIEnv* env, jobject clazz, jint parcelInt) |
| 1440 | { |
| 1441 | Parcel* parcel = (Parcel*)parcelInt; |
| 1442 | int own = 0; |
| 1443 | if (!parcel) { |
| 1444 | //LOGI("Initializing obj %p: creating new Parcel\n", clazz); |
| 1445 | own = 1; |
| 1446 | parcel = new Parcel; |
| 1447 | } else { |
| 1448 | //LOGI("Initializing obj %p: given existing Parcel %p\n", clazz, parcel); |
| 1449 | } |
| 1450 | if (parcel == NULL) { |
| 1451 | jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| 1452 | return; |
| 1453 | } |
| 1454 | //LOGI("Initializing obj %p from C++ Parcel %p, own=%d\n", clazz, parcel, own); |
| 1455 | env->SetIntField(clazz, gParcelOffsets.mOwnObject, own); |
| 1456 | env->SetIntField(clazz, gParcelOffsets.mObject, (int)parcel); |
| 1457 | } |
| 1458 | |
| 1459 | static void android_os_Parcel_destroy(JNIEnv* env, jobject clazz) |
| 1460 | { |
| 1461 | int32_t own = env->GetIntField(clazz, gParcelOffsets.mOwnObject); |
| 1462 | if (own) { |
| 1463 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1464 | env->SetIntField(clazz, gParcelOffsets.mObject, 0); |
| 1465 | //LOGI("Destroying obj %p: deleting C++ Parcel %p\n", clazz, parcel); |
| 1466 | delete parcel; |
| 1467 | } else { |
| 1468 | env->SetIntField(clazz, gParcelOffsets.mObject, 0); |
| 1469 | //LOGI("Destroying obj %p: leaving C++ Parcel %p\n", clazz); |
| 1470 | } |
| 1471 | } |
| 1472 | |
| 1473 | static jbyteArray android_os_Parcel_marshall(JNIEnv* env, jobject clazz) |
| 1474 | { |
| 1475 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1476 | if (parcel == NULL) { |
| 1477 | return NULL; |
| 1478 | } |
| 1479 | |
| 1480 | // do not marshall if there are binder objects in the parcel |
| 1481 | if (parcel->objectsCount()) |
| 1482 | { |
| 1483 | jniThrowException(env, "java/lang/RuntimeException", "Tried to marshall a Parcel that contained Binder objects."); |
| 1484 | return NULL; |
| 1485 | } |
| 1486 | |
| 1487 | jbyteArray ret = env->NewByteArray(parcel->dataSize()); |
| 1488 | |
| 1489 | if (ret != NULL) |
| 1490 | { |
| 1491 | jbyte* array = (jbyte*)env->GetPrimitiveArrayCritical(ret, 0); |
| 1492 | if (array != NULL) |
| 1493 | { |
| 1494 | memcpy(array, parcel->data(), parcel->dataSize()); |
| 1495 | env->ReleasePrimitiveArrayCritical(ret, array, 0); |
| 1496 | } |
| 1497 | } |
| 1498 | |
| 1499 | return ret; |
| 1500 | } |
| 1501 | |
| 1502 | static void android_os_Parcel_unmarshall(JNIEnv* env, jobject clazz, jbyteArray data, jint offset, jint length) |
| 1503 | { |
| 1504 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1505 | if (parcel == NULL || length < 0) { |
| 1506 | return; |
| 1507 | } |
| 1508 | |
| 1509 | jbyte* array = (jbyte*)env->GetPrimitiveArrayCritical(data, 0); |
| 1510 | if (array) |
| 1511 | { |
| 1512 | parcel->setDataSize(length); |
| 1513 | parcel->setDataPosition(0); |
| 1514 | |
| 1515 | void* raw = parcel->writeInplace(length); |
| 1516 | memcpy(raw, (array + offset), length); |
| 1517 | |
| 1518 | env->ReleasePrimitiveArrayCritical(data, array, 0); |
| 1519 | } |
| 1520 | } |
| 1521 | |
| 1522 | static void android_os_Parcel_appendFrom(JNIEnv* env, jobject clazz, jobject parcel, jint offset, jint length) |
| 1523 | { |
| 1524 | Parcel* thisParcel = parcelForJavaObject(env, clazz); |
| 1525 | if (thisParcel == NULL) { |
| 1526 | return; |
| 1527 | } |
| 1528 | Parcel* otherParcel = parcelForJavaObject(env, parcel); |
| 1529 | if (otherParcel == NULL) { |
| 1530 | return; |
| 1531 | } |
| 1532 | |
| 1533 | (void) thisParcel->appendFrom(otherParcel, offset, length); |
| 1534 | } |
| 1535 | |
| 1536 | static jboolean android_os_Parcel_hasFileDescriptors(JNIEnv* env, jobject clazz) |
| 1537 | { |
| 1538 | jboolean ret = JNI_FALSE; |
| 1539 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1540 | if (parcel != NULL) { |
| 1541 | if (parcel->hasFileDescriptors()) { |
| 1542 | ret = JNI_TRUE; |
| 1543 | } |
| 1544 | } |
| 1545 | return ret; |
| 1546 | } |
| 1547 | |
| 1548 | static void android_os_Parcel_writeInterfaceToken(JNIEnv* env, jobject clazz, jstring name) |
| 1549 | { |
| 1550 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1551 | if (parcel != NULL) { |
| 1552 | // In the current implementation, the token is just the serialized interface name that |
| 1553 | // the caller expects to be invoking |
| 1554 | const jchar* str = env->GetStringCritical(name, 0); |
| 1555 | if (str != NULL) { |
| 1556 | parcel->writeInterfaceToken(String16(str, env->GetStringLength(name))); |
| 1557 | env->ReleaseStringCritical(name, str); |
| 1558 | } |
| 1559 | } |
| 1560 | } |
| 1561 | |
| 1562 | static void android_os_Parcel_enforceInterface(JNIEnv* env, jobject clazz, jstring name) |
| 1563 | { |
| 1564 | jboolean ret = JNI_FALSE; |
| 1565 | |
| 1566 | Parcel* parcel = parcelForJavaObject(env, clazz); |
| 1567 | if (parcel != NULL) { |
| 1568 | const jchar* str = env->GetStringCritical(name, 0); |
| 1569 | if (str) { |
Brad Fitzpatrick | 7bcad8a3 | 2010-07-27 09:49:11 -0700 | [diff] [blame] | 1570 | IPCThreadState* threadState = IPCThreadState::self(); |
| 1571 | const int32_t oldPolicy = threadState->getStrictModePolicy(); |
| 1572 | const bool isValid = parcel->enforceInterface( |
Brad Fitzpatrick | 727de40 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 1573 | String16(str, env->GetStringLength(name)), |
Brad Fitzpatrick | 7bcad8a3 | 2010-07-27 09:49:11 -0700 | [diff] [blame] | 1574 | threadState); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1575 | env->ReleaseStringCritical(name, str); |
| 1576 | if (isValid) { |
Brad Fitzpatrick | 7bcad8a3 | 2010-07-27 09:49:11 -0700 | [diff] [blame] | 1577 | const int32_t newPolicy = threadState->getStrictModePolicy(); |
| 1578 | if (oldPolicy != newPolicy) { |
Brad Fitzpatrick | 727de40 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 1579 | // Need to keep the Java-level thread-local strict |
| 1580 | // mode policy in sync for the libcore |
| 1581 | // enforcements, which involves an upcall back |
| 1582 | // into Java. (We can't modify the |
| 1583 | // Parcel.enforceInterface signature, as it's |
| 1584 | // pseudo-public, and used via AIDL |
| 1585 | // auto-generation...) |
Brad Fitzpatrick | 7bcad8a3 | 2010-07-27 09:49:11 -0700 | [diff] [blame] | 1586 | set_dalvik_blockguard_policy(env, newPolicy); |
Brad Fitzpatrick | 727de40 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 1587 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1588 | return; // everything was correct -> return silently |
| 1589 | } |
| 1590 | } |
| 1591 | } |
| 1592 | |
| 1593 | // all error conditions wind up here |
| 1594 | jniThrowException(env, "java/lang/SecurityException", |
| 1595 | "Binder invocation to an incorrect interface"); |
| 1596 | } |
| 1597 | |
| 1598 | // ---------------------------------------------------------------------------- |
| 1599 | |
| 1600 | static const JNINativeMethod gParcelMethods[] = { |
| 1601 | {"dataSize", "()I", (void*)android_os_Parcel_dataSize}, |
| 1602 | {"dataAvail", "()I", (void*)android_os_Parcel_dataAvail}, |
| 1603 | {"dataPosition", "()I", (void*)android_os_Parcel_dataPosition}, |
| 1604 | {"dataCapacity", "()I", (void*)android_os_Parcel_dataCapacity}, |
| 1605 | {"setDataSize", "(I)V", (void*)android_os_Parcel_setDataSize}, |
| 1606 | {"setDataPosition", "(I)V", (void*)android_os_Parcel_setDataPosition}, |
| 1607 | {"setDataCapacity", "(I)V", (void*)android_os_Parcel_setDataCapacity}, |
| 1608 | {"writeNative", "([BII)V", (void*)android_os_Parcel_writeNative}, |
| 1609 | {"writeInt", "(I)V", (void*)android_os_Parcel_writeInt}, |
| 1610 | {"writeLong", "(J)V", (void*)android_os_Parcel_writeLong}, |
| 1611 | {"writeFloat", "(F)V", (void*)android_os_Parcel_writeFloat}, |
| 1612 | {"writeDouble", "(D)V", (void*)android_os_Parcel_writeDouble}, |
| 1613 | {"writeString", "(Ljava/lang/String;)V", (void*)android_os_Parcel_writeString}, |
| 1614 | {"writeStrongBinder", "(Landroid/os/IBinder;)V", (void*)android_os_Parcel_writeStrongBinder}, |
| 1615 | {"writeFileDescriptor", "(Ljava/io/FileDescriptor;)V", (void*)android_os_Parcel_writeFileDescriptor}, |
| 1616 | {"createByteArray", "()[B", (void*)android_os_Parcel_createByteArray}, |
| 1617 | {"readInt", "()I", (void*)android_os_Parcel_readInt}, |
| 1618 | {"readLong", "()J", (void*)android_os_Parcel_readLong}, |
| 1619 | {"readFloat", "()F", (void*)android_os_Parcel_readFloat}, |
| 1620 | {"readDouble", "()D", (void*)android_os_Parcel_readDouble}, |
| 1621 | {"readString", "()Ljava/lang/String;", (void*)android_os_Parcel_readString}, |
| 1622 | {"readStrongBinder", "()Landroid/os/IBinder;", (void*)android_os_Parcel_readStrongBinder}, |
| 1623 | {"internalReadFileDescriptor", "()Ljava/io/FileDescriptor;", (void*)android_os_Parcel_readFileDescriptor}, |
| 1624 | {"openFileDescriptor", "(Ljava/lang/String;I)Ljava/io/FileDescriptor;", (void*)android_os_Parcel_openFileDescriptor}, |
| 1625 | {"closeFileDescriptor", "(Ljava/io/FileDescriptor;)V", (void*)android_os_Parcel_closeFileDescriptor}, |
| 1626 | {"freeBuffer", "()V", (void*)android_os_Parcel_freeBuffer}, |
| 1627 | {"init", "(I)V", (void*)android_os_Parcel_init}, |
| 1628 | {"destroy", "()V", (void*)android_os_Parcel_destroy}, |
| 1629 | {"marshall", "()[B", (void*)android_os_Parcel_marshall}, |
| 1630 | {"unmarshall", "([BII)V", (void*)android_os_Parcel_unmarshall}, |
| 1631 | {"appendFrom", "(Landroid/os/Parcel;II)V", (void*)android_os_Parcel_appendFrom}, |
| 1632 | {"hasFileDescriptors", "()Z", (void*)android_os_Parcel_hasFileDescriptors}, |
| 1633 | {"writeInterfaceToken", "(Ljava/lang/String;)V", (void*)android_os_Parcel_writeInterfaceToken}, |
| 1634 | {"enforceInterface", "(Ljava/lang/String;)V", (void*)android_os_Parcel_enforceInterface}, |
| 1635 | }; |
| 1636 | |
| 1637 | const char* const kParcelPathName = "android/os/Parcel"; |
| 1638 | |
| 1639 | static int int_register_android_os_Parcel(JNIEnv* env) |
| 1640 | { |
| 1641 | jclass clazz; |
| 1642 | |
| 1643 | clazz = env->FindClass("android/util/Log"); |
| 1644 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.util.Log"); |
| 1645 | gLogOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1646 | gLogOffsets.mLogE = env->GetStaticMethodID( |
| 1647 | clazz, "e", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Throwable;)I"); |
| 1648 | assert(gLogOffsets.mLogE); |
| 1649 | |
| 1650 | clazz = env->FindClass("java/io/FileDescriptor"); |
| 1651 | LOG_FATAL_IF(clazz == NULL, "Unable to find class java.io.FileDescriptor"); |
| 1652 | gFileDescriptorOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1653 | gFileDescriptorOffsets.mConstructor |
| 1654 | = env->GetMethodID(clazz, "<init>", "()V"); |
| 1655 | gFileDescriptorOffsets.mDescriptor = env->GetFieldID(clazz, "descriptor", "I"); |
| 1656 | LOG_FATAL_IF(gFileDescriptorOffsets.mDescriptor == NULL, |
| 1657 | "Unable to find descriptor field in java.io.FileDescriptor"); |
| 1658 | |
| 1659 | clazz = env->FindClass("android/os/ParcelFileDescriptor"); |
| 1660 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.ParcelFileDescriptor"); |
| 1661 | gParcelFileDescriptorOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1662 | gParcelFileDescriptorOffsets.mConstructor |
| 1663 | = env->GetMethodID(clazz, "<init>", "(Ljava/io/FileDescriptor;)V"); |
| 1664 | |
| 1665 | clazz = env->FindClass(kParcelPathName); |
| 1666 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.Parcel"); |
| 1667 | |
| 1668 | gParcelOffsets.mObject |
| 1669 | = env->GetFieldID(clazz, "mObject", "I"); |
| 1670 | gParcelOffsets.mOwnObject |
| 1671 | = env->GetFieldID(clazz, "mOwnObject", "I"); |
| 1672 | |
Brad Fitzpatrick | 727de40 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 1673 | clazz = env->FindClass("android/os/StrictMode"); |
| 1674 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.StrictMode"); |
| 1675 | gStrictModeCallbackOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 1676 | gStrictModeCallbackOffsets.mCallback = env->GetStaticMethodID( |
| 1677 | clazz, "onBinderStrictModePolicyChange", "(I)V"); |
| 1678 | LOG_FATAL_IF(gStrictModeCallbackOffsets.mCallback == NULL, |
| 1679 | "Unable to find strict mode callback."); |
| 1680 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1681 | return AndroidRuntime::registerNativeMethods( |
| 1682 | env, kParcelPathName, |
| 1683 | gParcelMethods, NELEM(gParcelMethods)); |
| 1684 | } |
| 1685 | |
| 1686 | int register_android_os_Binder(JNIEnv* env) |
| 1687 | { |
| 1688 | if (int_register_android_os_Binder(env) < 0) |
| 1689 | return -1; |
| 1690 | if (int_register_android_os_BinderInternal(env) < 0) |
| 1691 | return -1; |
| 1692 | if (int_register_android_os_BinderProxy(env) < 0) |
| 1693 | return -1; |
| 1694 | if (int_register_android_os_Parcel(env) < 0) |
| 1695 | return -1; |
| 1696 | return 0; |
| 1697 | } |
| 1698 | |
| 1699 | namespace android { |
| 1700 | |
| 1701 | // Returns the Unix file descriptor for a ParcelFileDescriptor object |
| 1702 | int getParcelFileDescriptorFD(JNIEnv* env, jobject object) |
| 1703 | { |
| 1704 | return env->GetIntField(object, gFileDescriptorOffsets.mDescriptor); |
| 1705 | } |
| 1706 | |
| 1707 | } |