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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "content/browser/renderer_host/java/java_bound_object.h" | |
| 6 | |
| 7 #include "base/android/jni_android.h" | |
| 8 #include "base/android/jni_string.h" | |
| 9 #include "base/memory/singleton.h" | |
| 10 #include "base/numerics/safe_conversions.h" | |
| 11 #include "base/strings/string_number_conversions.h" | |
| 12 #include "base/strings/stringprintf.h" | |
| 13 #include "content/browser/renderer_host/java/java_bridge_dispatcher_host_manager
.h" | |
| 14 #include "content/browser/renderer_host/java/java_type.h" | |
| 15 #include "content/browser/renderer_host/java/jni_helper.h" | |
| 16 #include "content/public/browser/browser_thread.h" | |
| 17 #include "third_party/WebKit/public/web/WebBindings.h" | |
| 18 | |
| 19 using base::StringPrintf; | |
| 20 using base::android::AttachCurrentThread; | |
| 21 using base::android::ConvertUTF8ToJavaString; | |
| 22 using base::android::GetClass; | |
| 23 using base::android::JavaRef; | |
| 24 using base::android::ScopedJavaGlobalRef; | |
| 25 using base::android::ScopedJavaLocalRef; | |
| 26 using blink::WebBindings; | |
| 27 | |
| 28 // The conversion between JavaScript and Java types is based on the Live | |
| 29 // Connect 2 spec. See | |
| 30 // http://jdk6.java.net/plugin2/liveconnect/#JS_JAVA_CONVERSIONS. | |
| 31 | |
| 32 // Note that in some cases, we differ from from the spec in order to maintain | |
| 33 // existing behavior. These areas are marked LIVECONNECT_COMPLIANCE. We may | |
| 34 // revisit this decision in the future. | |
| 35 | |
| 36 namespace content { | |
| 37 namespace { | |
| 38 | |
| 39 const char kJavaLangClass[] = "java/lang/Class"; | |
| 40 const char kJavaLangObject[] = "java/lang/Object"; | |
| 41 const char kJavaLangReflectMethod[] = "java/lang/reflect/Method"; | |
| 42 const char kJavaLangSecurityExceptionClass[] = "java/lang/SecurityException"; | |
| 43 const char kGetClass[] = "getClass"; | |
| 44 const char kGetMethods[] = "getMethods"; | |
| 45 const char kIsAnnotationPresent[] = "isAnnotationPresent"; | |
| 46 const char kReturningJavaLangClass[] = "()Ljava/lang/Class;"; | |
| 47 const char kReturningJavaLangReflectMethodArray[] = | |
| 48 "()[Ljava/lang/reflect/Method;"; | |
| 49 const char kTakesJavaLangClassReturningBoolean[] = "(Ljava/lang/Class;)Z"; | |
| 50 // This is an exception message, so no need to localize. | |
| 51 const char kAccessToObjectGetClassIsBlocked[] = | |
| 52 "Access to java.lang.Object.getClass is blocked"; | |
| 53 | |
| 54 // Our special NPObject type. We extend an NPObject with a pointer to a | |
| 55 // JavaBoundObject. We also add static methods for each of the NPObject | |
| 56 // callbacks, which are registered by our NPClass. These methods simply | |
| 57 // delegate to the private implementation methods of JavaBoundObject. | |
| 58 struct JavaNPObject : public NPObject { | |
| 59 JavaBoundObject* bound_object; | |
| 60 | |
| 61 static const NPClass kNPClass; | |
| 62 | |
| 63 static NPObject* Allocate(NPP npp, NPClass* np_class); | |
| 64 static void Deallocate(NPObject* np_object); | |
| 65 static bool HasMethod(NPObject* np_object, NPIdentifier np_identifier); | |
| 66 static bool Invoke(NPObject* np_object, NPIdentifier np_identifier, | |
| 67 const NPVariant *args, uint32_t arg_count, | |
| 68 NPVariant *result); | |
| 69 static bool HasProperty(NPObject* np_object, NPIdentifier np_identifier); | |
| 70 static bool GetProperty(NPObject* np_object, NPIdentifier np_identifier, | |
| 71 NPVariant *result); | |
| 72 static bool Enumerate(NPObject* object, NPIdentifier** values, | |
| 73 uint32_t* count); | |
| 74 }; | |
| 75 | |
| 76 const NPClass JavaNPObject::kNPClass = { | |
| 77 NP_CLASS_STRUCT_VERSION, | |
| 78 JavaNPObject::Allocate, | |
| 79 JavaNPObject::Deallocate, | |
| 80 NULL, // NPInvalidate | |
| 81 JavaNPObject::HasMethod, | |
| 82 JavaNPObject::Invoke, | |
| 83 NULL, // NPInvokeDefault | |
| 84 JavaNPObject::HasProperty, | |
| 85 JavaNPObject::GetProperty, | |
| 86 NULL, // NPSetProperty, | |
| 87 NULL, // NPRemoveProperty | |
| 88 JavaNPObject::Enumerate, | |
| 89 NULL, | |
| 90 }; | |
| 91 | |
| 92 NPObject* JavaNPObject::Allocate(NPP npp, NPClass* np_class) { | |
| 93 JavaNPObject* obj = new JavaNPObject(); | |
| 94 return obj; | |
| 95 } | |
| 96 | |
| 97 void JavaNPObject::Deallocate(NPObject* np_object) { | |
| 98 JavaNPObject* obj = reinterpret_cast<JavaNPObject*>(np_object); | |
| 99 delete obj->bound_object; | |
| 100 delete obj; | |
| 101 } | |
| 102 | |
| 103 bool JavaNPObject::HasMethod(NPObject* np_object, NPIdentifier np_identifier) { | |
| 104 std::string name(WebBindings::utf8FromIdentifier(np_identifier)); | |
| 105 JavaNPObject* obj = reinterpret_cast<JavaNPObject*>(np_object); | |
| 106 return obj->bound_object->HasMethod(name); | |
| 107 } | |
| 108 | |
| 109 bool JavaNPObject::Invoke(NPObject* np_object, NPIdentifier np_identifier, | |
| 110 const NPVariant* args, uint32_t arg_count, | |
| 111 NPVariant* result) { | |
| 112 std::string name(WebBindings::utf8FromIdentifier(np_identifier)); | |
| 113 JavaNPObject* obj = reinterpret_cast<JavaNPObject*>(np_object); | |
| 114 return obj->bound_object->Invoke(name, args, arg_count, result); | |
| 115 } | |
| 116 | |
| 117 bool JavaNPObject::HasProperty(NPObject* np_object, | |
| 118 NPIdentifier np_identifier) { | |
| 119 // LIVECONNECT_COMPLIANCE: Existing behavior is to return false to indicate | |
| 120 // that the property is not present. Spec requires supporting this correctly. | |
| 121 return false; | |
| 122 } | |
| 123 | |
| 124 bool JavaNPObject::GetProperty(NPObject* np_object, | |
| 125 NPIdentifier np_identifier, | |
| 126 NPVariant* result) { | |
| 127 // LIVECONNECT_COMPLIANCE: Existing behavior is to return false to indicate | |
| 128 // that the property is undefined. Spec requires supporting this correctly. | |
| 129 return false; | |
| 130 } | |
| 131 | |
| 132 bool JavaNPObject::Enumerate(NPObject* np_object, NPIdentifier** values, | |
| 133 uint32_t* count) { | |
| 134 JavaNPObject* obj = reinterpret_cast<JavaNPObject*>(np_object); | |
| 135 if (!obj->bound_object->CanEnumerateMethods()) return false; | |
| 136 std::vector<std::string> method_names = obj->bound_object->GetMethodNames(); | |
| 137 *count = base::saturated_cast<uint32_t>(method_names.size()); | |
| 138 *values = static_cast<NPIdentifier*>(calloc(*count, sizeof(NPIdentifier))); | |
| 139 for (uint32_t i = 0; i < *count; ++i) { | |
| 140 (*values)[i] = WebBindings::getStringIdentifier(method_names[i].c_str()); | |
| 141 } | |
| 142 return true; | |
| 143 } | |
| 144 | |
| 145 // Calls a Java method through JNI. If the Java method raises an uncaught | |
| 146 // exception, it is cleared and this method returns false. Otherwise, this | |
| 147 // method returns true and the Java method's return value is provided as an | |
| 148 // NPVariant. Note that this method does not do any type coercion. The Java | |
| 149 // return value is simply converted to the corresponding NPAPI type. | |
| 150 bool CallJNIMethod( | |
| 151 jobject object, | |
| 152 jclass clazz, | |
| 153 const JavaType& return_type, | |
| 154 jmethodID id, | |
| 155 jvalue* parameters, | |
| 156 NPVariant* result, | |
| 157 const JavaRef<jclass>& safe_annotation_clazz, | |
| 158 const base::WeakPtr<JavaBridgeDispatcherHostManager>& manager, | |
| 159 bool can_enumerate_methods) { | |
| 160 DCHECK(object || clazz); | |
| 161 JNIEnv* env = AttachCurrentThread(); | |
| 162 switch (return_type.type) { | |
| 163 case JavaType::TypeBoolean: | |
| 164 BOOLEAN_TO_NPVARIANT( | |
| 165 object ? env->CallBooleanMethodA(object, id, parameters) | |
| 166 : env->CallStaticBooleanMethodA(clazz, id, parameters), | |
| 167 *result); | |
| 168 break; | |
| 169 case JavaType::TypeByte: | |
| 170 INT32_TO_NPVARIANT( | |
| 171 object ? env->CallByteMethodA(object, id, parameters) | |
| 172 : env->CallStaticByteMethodA(clazz, id, parameters), | |
| 173 *result); | |
| 174 break; | |
| 175 case JavaType::TypeChar: | |
| 176 INT32_TO_NPVARIANT( | |
| 177 object ? env->CallCharMethodA(object, id, parameters) | |
| 178 : env->CallStaticCharMethodA(clazz, id, parameters), | |
| 179 *result); | |
| 180 break; | |
| 181 case JavaType::TypeShort: | |
| 182 INT32_TO_NPVARIANT( | |
| 183 object ? env->CallShortMethodA(object, id, parameters) | |
| 184 : env->CallStaticShortMethodA(clazz, id, parameters), | |
| 185 *result); | |
| 186 break; | |
| 187 case JavaType::TypeInt: | |
| 188 INT32_TO_NPVARIANT(object | |
| 189 ? env->CallIntMethodA(object, id, parameters) | |
| 190 : env->CallStaticIntMethodA(clazz, id, parameters), | |
| 191 *result); | |
| 192 break; | |
| 193 case JavaType::TypeLong: | |
| 194 DOUBLE_TO_NPVARIANT( | |
| 195 object ? env->CallLongMethodA(object, id, parameters) | |
| 196 : env->CallStaticLongMethodA(clazz, id, parameters), | |
| 197 *result); | |
| 198 break; | |
| 199 case JavaType::TypeFloat: | |
| 200 DOUBLE_TO_NPVARIANT( | |
| 201 object ? env->CallFloatMethodA(object, id, parameters) | |
| 202 : env->CallStaticFloatMethodA(clazz, id, parameters), | |
| 203 *result); | |
| 204 break; | |
| 205 case JavaType::TypeDouble: | |
| 206 DOUBLE_TO_NPVARIANT( | |
| 207 object ? env->CallDoubleMethodA(object, id, parameters) | |
| 208 : env->CallStaticDoubleMethodA(clazz, id, parameters), | |
| 209 *result); | |
| 210 break; | |
| 211 case JavaType::TypeVoid: | |
| 212 if (object) | |
| 213 env->CallVoidMethodA(object, id, parameters); | |
| 214 else | |
| 215 env->CallStaticVoidMethodA(clazz, id, parameters); | |
| 216 VOID_TO_NPVARIANT(*result); | |
| 217 break; | |
| 218 case JavaType::TypeArray: | |
| 219 // LIVECONNECT_COMPLIANCE: Existing behavior is to not call methods that | |
| 220 // return arrays. Spec requires calling the method and converting the | |
| 221 // result to a JavaScript array. | |
| 222 VOID_TO_NPVARIANT(*result); | |
| 223 break; | |
| 224 case JavaType::TypeString: { | |
| 225 jstring java_string = static_cast<jstring>( | |
| 226 object ? env->CallObjectMethodA(object, id, parameters) | |
| 227 : env->CallStaticObjectMethodA(clazz, id, parameters)); | |
| 228 // If an exception was raised, we must clear it before calling most JNI | |
| 229 // methods. ScopedJavaLocalRef is liable to make such calls, so we test | |
| 230 // first. | |
| 231 if (base::android::ClearException(env)) { | |
| 232 return false; | |
| 233 } | |
| 234 ScopedJavaLocalRef<jstring> scoped_java_string(env, java_string); | |
| 235 if (!scoped_java_string.obj()) { | |
| 236 // LIVECONNECT_COMPLIANCE: Existing behavior is to return undefined. | |
| 237 // Spec requires returning a null string. | |
| 238 VOID_TO_NPVARIANT(*result); | |
| 239 break; | |
| 240 } | |
| 241 std::string str = | |
| 242 base::android::ConvertJavaStringToUTF8(scoped_java_string); | |
| 243 size_t length = str.length(); | |
| 244 // This pointer is freed in _NPN_ReleaseVariantValue in | |
| 245 // third_party/WebKit/Source/WebCore/bindings/v8/npruntime.cpp. | |
| 246 char* buffer = static_cast<char*>(malloc(length)); | |
| 247 str.copy(buffer, length, 0); | |
| 248 STRINGN_TO_NPVARIANT(buffer, length, *result); | |
| 249 break; | |
| 250 } | |
| 251 case JavaType::TypeObject: { | |
| 252 // If an exception was raised, we must clear it before calling most JNI | |
| 253 // methods. ScopedJavaLocalRef is liable to make such calls, so we test | |
| 254 // first. | |
| 255 jobject java_object = | |
| 256 object ? env->CallObjectMethodA(object, id, parameters) | |
| 257 : env->CallStaticObjectMethodA(clazz, id, parameters); | |
| 258 if (base::android::ClearException(env)) { | |
| 259 return false; | |
| 260 } | |
| 261 ScopedJavaLocalRef<jobject> scoped_java_object(env, java_object); | |
| 262 if (!scoped_java_object.obj()) { | |
| 263 NULL_TO_NPVARIANT(*result); | |
| 264 break; | |
| 265 } | |
| 266 OBJECT_TO_NPVARIANT(JavaBoundObject::Create(scoped_java_object, | |
| 267 safe_annotation_clazz, | |
| 268 manager, | |
| 269 can_enumerate_methods), | |
| 270 *result); | |
| 271 break; | |
| 272 } | |
| 273 } | |
| 274 return !base::android::ClearException(env); | |
| 275 } | |
| 276 | |
| 277 double RoundDoubleTowardsZero(const double& x) { | |
| 278 if (std::isnan(x)) { | |
| 279 return 0.0; | |
| 280 } | |
| 281 return x > 0.0 ? floor(x) : ceil(x); | |
| 282 } | |
| 283 | |
| 284 // Rounds to jlong using Java's type conversion rules. | |
| 285 jlong RoundDoubleToLong(const double& x) { | |
| 286 double intermediate = RoundDoubleTowardsZero(x); | |
| 287 // The int64 limits can not be converted exactly to double values, so we | |
| 288 // compare to custom constants. kint64max is 2^63 - 1, but the spacing | |
| 289 // between double values in the the range 2^62 to 2^63 is 2^10. The cast is | |
| 290 // required to silence a spurious gcc warning for integer overflow. | |
| 291 const int64 limit = (GG_INT64_C(1) << 63) - static_cast<uint64>(1 << 10); | |
| 292 DCHECK(limit > 0); | |
| 293 const double kLargestDoubleLessThanInt64Max = limit; | |
| 294 const double kSmallestDoubleGreaterThanInt64Min = -limit; | |
| 295 if (intermediate > kLargestDoubleLessThanInt64Max) { | |
| 296 return kint64max; | |
| 297 } | |
| 298 if (intermediate < kSmallestDoubleGreaterThanInt64Min) { | |
| 299 return kint64min; | |
| 300 } | |
| 301 return static_cast<jlong>(intermediate); | |
| 302 } | |
| 303 | |
| 304 // Rounds to jint using Java's type conversion rules. | |
| 305 jint RoundDoubleToInt(const double& x) { | |
| 306 double intermediate = RoundDoubleTowardsZero(x); | |
| 307 // The int32 limits cast exactly to double values. | |
| 308 intermediate = std::min(intermediate, static_cast<double>(kint32max)); | |
| 309 intermediate = std::max(intermediate, static_cast<double>(kint32min)); | |
| 310 return static_cast<jint>(intermediate); | |
| 311 } | |
| 312 | |
| 313 jvalue CoerceJavaScriptNumberToJavaValue(const NPVariant& variant, | |
| 314 const JavaType& target_type, | |
| 315 bool coerce_to_string) { | |
| 316 // See http://jdk6.java.net/plugin2/liveconnect/#JS_NUMBER_VALUES. | |
| 317 | |
| 318 // For conversion to numeric types, we need to replicate Java's type | |
| 319 // conversion rules. This requires that for integer values, we simply discard | |
| 320 // all but the lowest n buts, where n is the number of bits in the target | |
| 321 // type. For double values, the logic is more involved. | |
| 322 jvalue result; | |
| 323 DCHECK(variant.type == NPVariantType_Int32 || | |
| 324 variant.type == NPVariantType_Double); | |
| 325 bool is_double = variant.type == NPVariantType_Double; | |
| 326 switch (target_type.type) { | |
| 327 case JavaType::TypeByte: | |
| 328 result.b = is_double ? | |
| 329 static_cast<jbyte>(RoundDoubleToInt(NPVARIANT_TO_DOUBLE(variant))) : | |
| 330 static_cast<jbyte>(NPVARIANT_TO_INT32(variant)); | |
| 331 break; | |
| 332 case JavaType::TypeChar: | |
| 333 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert double to 0. | |
| 334 // Spec requires converting doubles similarly to how we convert doubles to | |
| 335 // other numeric types. | |
| 336 result.c = is_double ? 0 : | |
| 337 static_cast<jchar>(NPVARIANT_TO_INT32(variant)); | |
| 338 break; | |
| 339 case JavaType::TypeShort: | |
| 340 result.s = is_double ? | |
| 341 static_cast<jshort>(RoundDoubleToInt(NPVARIANT_TO_DOUBLE(variant))) : | |
| 342 static_cast<jshort>(NPVARIANT_TO_INT32(variant)); | |
| 343 break; | |
| 344 case JavaType::TypeInt: | |
| 345 result.i = is_double ? RoundDoubleToInt(NPVARIANT_TO_DOUBLE(variant)) : | |
| 346 NPVARIANT_TO_INT32(variant); | |
| 347 break; | |
| 348 case JavaType::TypeLong: | |
| 349 result.j = is_double ? RoundDoubleToLong(NPVARIANT_TO_DOUBLE(variant)) : | |
| 350 NPVARIANT_TO_INT32(variant); | |
| 351 break; | |
| 352 case JavaType::TypeFloat: | |
| 353 result.f = is_double ? static_cast<jfloat>(NPVARIANT_TO_DOUBLE(variant)) : | |
| 354 NPVARIANT_TO_INT32(variant); | |
| 355 break; | |
| 356 case JavaType::TypeDouble: | |
| 357 result.d = is_double ? NPVARIANT_TO_DOUBLE(variant) : | |
| 358 NPVARIANT_TO_INT32(variant); | |
| 359 break; | |
| 360 case JavaType::TypeObject: | |
| 361 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to null. Spec | |
| 362 // requires handling object equivalents of primitive types. | |
| 363 result.l = NULL; | |
| 364 break; | |
| 365 case JavaType::TypeString: | |
| 366 result.l = coerce_to_string ? | |
| 367 ConvertUTF8ToJavaString( | |
| 368 AttachCurrentThread(), | |
| 369 is_double ? | |
| 370 base::StringPrintf("%.6lg", NPVARIANT_TO_DOUBLE(variant)) : | |
| 371 base::Int64ToString(NPVARIANT_TO_INT32(variant))).Release() : | |
| 372 NULL; | |
| 373 break; | |
| 374 case JavaType::TypeBoolean: | |
| 375 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to false. Spec | |
| 376 // requires converting to false for 0 or NaN, true otherwise. | |
| 377 result.z = JNI_FALSE; | |
| 378 break; | |
| 379 case JavaType::TypeArray: | |
| 380 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to null. Spec | |
| 381 // requires raising a JavaScript exception. | |
| 382 result.l = NULL; | |
| 383 break; | |
| 384 case JavaType::TypeVoid: | |
| 385 // Conversion to void must never happen. | |
| 386 NOTREACHED(); | |
| 387 break; | |
| 388 } | |
| 389 return result; | |
| 390 } | |
| 391 | |
| 392 jvalue CoerceJavaScriptBooleanToJavaValue(const NPVariant& variant, | |
| 393 const JavaType& target_type, | |
| 394 bool coerce_to_string) { | |
| 395 // See http://jdk6.java.net/plugin2/liveconnect/#JS_BOOLEAN_VALUES. | |
| 396 DCHECK_EQ(NPVariantType_Bool, variant.type); | |
| 397 bool boolean_value = NPVARIANT_TO_BOOLEAN(variant); | |
| 398 jvalue result; | |
| 399 switch (target_type.type) { | |
| 400 case JavaType::TypeBoolean: | |
| 401 result.z = boolean_value ? JNI_TRUE : JNI_FALSE; | |
| 402 break; | |
| 403 case JavaType::TypeObject: | |
| 404 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to NULL. Spec | |
| 405 // requires handling java.lang.Boolean and java.lang.Object. | |
| 406 result.l = NULL; | |
| 407 break; | |
| 408 case JavaType::TypeString: | |
| 409 result.l = coerce_to_string ? | |
| 410 ConvertUTF8ToJavaString(AttachCurrentThread(), | |
| 411 boolean_value ? "true" : "false").Release() : | |
| 412 NULL; | |
| 413 break; | |
| 414 case JavaType::TypeByte: | |
| 415 case JavaType::TypeChar: | |
| 416 case JavaType::TypeShort: | |
| 417 case JavaType::TypeInt: | |
| 418 case JavaType::TypeLong: | |
| 419 case JavaType::TypeFloat: | |
| 420 case JavaType::TypeDouble: { | |
| 421 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to 0. Spec | |
| 422 // requires converting to 0 or 1. | |
| 423 jvalue null_value = {0}; | |
| 424 result = null_value; | |
| 425 break; | |
| 426 } | |
| 427 case JavaType::TypeArray: | |
| 428 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to NULL. Spec | |
| 429 // requires raising a JavaScript exception. | |
| 430 result.l = NULL; | |
| 431 break; | |
| 432 case JavaType::TypeVoid: | |
| 433 // Conversion to void must never happen. | |
| 434 NOTREACHED(); | |
| 435 break; | |
| 436 } | |
| 437 return result; | |
| 438 } | |
| 439 | |
| 440 jvalue CoerceJavaScriptStringToJavaValue(const NPVariant& variant, | |
| 441 const JavaType& target_type) { | |
| 442 // See http://jdk6.java.net/plugin2/liveconnect/#JS_STRING_VALUES. | |
| 443 DCHECK_EQ(NPVariantType_String, variant.type); | |
| 444 jvalue result; | |
| 445 switch (target_type.type) { | |
| 446 case JavaType::TypeString: | |
| 447 result.l = ConvertUTF8ToJavaString( | |
| 448 AttachCurrentThread(), | |
| 449 base::StringPiece(NPVARIANT_TO_STRING(variant).UTF8Characters, | |
| 450 NPVARIANT_TO_STRING(variant).UTF8Length)).Release(); | |
| 451 break; | |
| 452 case JavaType::TypeObject: | |
| 453 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to NULL. Spec | |
| 454 // requires handling java.lang.Object. | |
| 455 result.l = NULL; | |
| 456 break; | |
| 457 case JavaType::TypeByte: | |
| 458 case JavaType::TypeShort: | |
| 459 case JavaType::TypeInt: | |
| 460 case JavaType::TypeLong: | |
| 461 case JavaType::TypeFloat: | |
| 462 case JavaType::TypeDouble: { | |
| 463 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to 0. Spec | |
| 464 // requires using valueOf() method of corresponding object type. | |
| 465 jvalue null_value = {0}; | |
| 466 result = null_value; | |
| 467 break; | |
| 468 } | |
| 469 case JavaType::TypeChar: | |
| 470 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to 0. Spec | |
| 471 // requires using java.lang.Short.decode(). | |
| 472 result.c = 0; | |
| 473 break; | |
| 474 case JavaType::TypeBoolean: | |
| 475 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to false. Spec | |
| 476 // requires converting the empty string to false, otherwise true. | |
| 477 result.z = JNI_FALSE; | |
| 478 break; | |
| 479 case JavaType::TypeArray: | |
| 480 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to NULL. Spec | |
| 481 // requires raising a JavaScript exception. | |
| 482 result.l = NULL; | |
| 483 break; | |
| 484 case JavaType::TypeVoid: | |
| 485 // Conversion to void must never happen. | |
| 486 NOTREACHED(); | |
| 487 break; | |
| 488 } | |
| 489 return result; | |
| 490 } | |
| 491 | |
| 492 // Note that this only handles primitive types and strings. | |
| 493 jobject CreateJavaArray(const JavaType& type, jsize length) { | |
| 494 JNIEnv* env = AttachCurrentThread(); | |
| 495 switch (type.type) { | |
| 496 case JavaType::TypeBoolean: | |
| 497 return env->NewBooleanArray(length); | |
| 498 case JavaType::TypeByte: | |
| 499 return env->NewByteArray(length); | |
| 500 case JavaType::TypeChar: | |
| 501 return env->NewCharArray(length); | |
| 502 case JavaType::TypeShort: | |
| 503 return env->NewShortArray(length); | |
| 504 case JavaType::TypeInt: | |
| 505 return env->NewIntArray(length); | |
| 506 case JavaType::TypeLong: | |
| 507 return env->NewLongArray(length); | |
| 508 case JavaType::TypeFloat: | |
| 509 return env->NewFloatArray(length); | |
| 510 case JavaType::TypeDouble: | |
| 511 return env->NewDoubleArray(length); | |
| 512 case JavaType::TypeString: { | |
| 513 ScopedJavaLocalRef<jclass> clazz(GetClass(env, "java/lang/String")); | |
| 514 return env->NewObjectArray(length, clazz.obj(), NULL); | |
| 515 } | |
| 516 case JavaType::TypeVoid: | |
| 517 // Conversion to void must never happen. | |
| 518 case JavaType::TypeArray: | |
| 519 case JavaType::TypeObject: | |
| 520 // Not handled. | |
| 521 NOTREACHED(); | |
| 522 } | |
| 523 return NULL; | |
| 524 } | |
| 525 | |
| 526 // Sets the specified element of the supplied array to the value of the | |
| 527 // supplied jvalue. Requires that the type of the array matches that of the | |
| 528 // jvalue. Handles only primitive types and strings. Note that in the case of a | |
| 529 // string, the array takes a new reference to the string object. | |
| 530 void SetArrayElement(jobject array, | |
| 531 const JavaType& type, | |
| 532 jsize index, | |
| 533 const jvalue& value) { | |
| 534 JNIEnv* env = AttachCurrentThread(); | |
| 535 switch (type.type) { | |
| 536 case JavaType::TypeBoolean: | |
| 537 env->SetBooleanArrayRegion(static_cast<jbooleanArray>(array), index, 1, | |
| 538 &value.z); | |
| 539 break; | |
| 540 case JavaType::TypeByte: | |
| 541 env->SetByteArrayRegion(static_cast<jbyteArray>(array), index, 1, | |
| 542 &value.b); | |
| 543 break; | |
| 544 case JavaType::TypeChar: | |
| 545 env->SetCharArrayRegion(static_cast<jcharArray>(array), index, 1, | |
| 546 &value.c); | |
| 547 break; | |
| 548 case JavaType::TypeShort: | |
| 549 env->SetShortArrayRegion(static_cast<jshortArray>(array), index, 1, | |
| 550 &value.s); | |
| 551 break; | |
| 552 case JavaType::TypeInt: | |
| 553 env->SetIntArrayRegion(static_cast<jintArray>(array), index, 1, | |
| 554 &value.i); | |
| 555 break; | |
| 556 case JavaType::TypeLong: | |
| 557 env->SetLongArrayRegion(static_cast<jlongArray>(array), index, 1, | |
| 558 &value.j); | |
| 559 break; | |
| 560 case JavaType::TypeFloat: | |
| 561 env->SetFloatArrayRegion(static_cast<jfloatArray>(array), index, 1, | |
| 562 &value.f); | |
| 563 break; | |
| 564 case JavaType::TypeDouble: | |
| 565 env->SetDoubleArrayRegion(static_cast<jdoubleArray>(array), index, 1, | |
| 566 &value.d); | |
| 567 break; | |
| 568 case JavaType::TypeString: | |
| 569 env->SetObjectArrayElement(static_cast<jobjectArray>(array), index, | |
| 570 value.l); | |
| 571 break; | |
| 572 case JavaType::TypeVoid: | |
| 573 // Conversion to void must never happen. | |
| 574 case JavaType::TypeArray: | |
| 575 case JavaType::TypeObject: | |
| 576 // Not handled. | |
| 577 NOTREACHED(); | |
| 578 } | |
| 579 base::android::CheckException(env); | |
| 580 } | |
| 581 | |
| 582 void ReleaseJavaValueIfRequired(JNIEnv* env, | |
| 583 jvalue* value, | |
| 584 const JavaType& type) { | |
| 585 if (type.type == JavaType::TypeString || | |
| 586 type.type == JavaType::TypeObject || | |
| 587 type.type == JavaType::TypeArray) { | |
| 588 env->DeleteLocalRef(value->l); | |
| 589 value->l = NULL; | |
| 590 } | |
| 591 } | |
| 592 | |
| 593 jvalue CoerceJavaScriptValueToJavaValue(const NPVariant& variant, | |
| 594 const JavaType& target_type, | |
| 595 bool coerce_to_string); | |
| 596 | |
| 597 // Returns a new local reference to a Java array. | |
| 598 jobject CoerceJavaScriptObjectToArray(const NPVariant& variant, | |
| 599 const JavaType& target_type) { | |
| 600 DCHECK_EQ(JavaType::TypeArray, target_type.type); | |
| 601 NPObject* object = NPVARIANT_TO_OBJECT(variant); | |
| 602 DCHECK_NE(&JavaNPObject::kNPClass, object->_class); | |
| 603 | |
| 604 const JavaType& target_inner_type = *target_type.inner_type.get(); | |
| 605 // LIVECONNECT_COMPLIANCE: Existing behavior is to return null for | |
| 606 // multi-dimensional arrays. Spec requires handling multi-demensional arrays. | |
| 607 if (target_inner_type.type == JavaType::TypeArray) { | |
| 608 return NULL; | |
| 609 } | |
| 610 | |
| 611 // LIVECONNECT_COMPLIANCE: Existing behavior is to return null for object | |
| 612 // arrays. Spec requires handling object arrays. | |
| 613 if (target_inner_type.type == JavaType::TypeObject) { | |
| 614 return NULL; | |
| 615 } | |
| 616 | |
| 617 // If the object does not have a length property, return null. | |
| 618 NPVariant length_variant; | |
| 619 if (!WebBindings::getProperty(0, object, | |
| 620 WebBindings::getStringIdentifier("length"), | |
| 621 &length_variant)) { | |
| 622 WebBindings::releaseVariantValue(&length_variant); | |
| 623 return NULL; | |
| 624 } | |
| 625 | |
| 626 // If the length property does not have numeric type, or is outside the valid | |
| 627 // range for a Java array length, return null. | |
| 628 jsize length = -1; | |
| 629 if (NPVARIANT_IS_INT32(length_variant) | |
| 630 && NPVARIANT_TO_INT32(length_variant) >= 0) { | |
| 631 length = NPVARIANT_TO_INT32(length_variant); | |
| 632 } else if (NPVARIANT_IS_DOUBLE(length_variant) | |
| 633 && NPVARIANT_TO_DOUBLE(length_variant) >= 0.0 | |
| 634 && NPVARIANT_TO_DOUBLE(length_variant) <= kint32max) { | |
| 635 length = static_cast<jsize>(NPVARIANT_TO_DOUBLE(length_variant)); | |
| 636 } | |
| 637 WebBindings::releaseVariantValue(&length_variant); | |
| 638 if (length == -1) { | |
| 639 return NULL; | |
| 640 } | |
| 641 | |
| 642 // Create the Java array. | |
| 643 // TODO(steveblock): Handle failure to create the array. | |
| 644 jobject result = CreateJavaArray(target_inner_type, length); | |
| 645 NPVariant value_variant; | |
| 646 JNIEnv* env = AttachCurrentThread(); | |
| 647 for (jsize i = 0; i < length; ++i) { | |
| 648 // It seems that getProperty() will set the variant to type void on failure, | |
| 649 // but this doesn't seem to be documented, so do it explicitly here for | |
| 650 // safety. | |
| 651 VOID_TO_NPVARIANT(value_variant); | |
| 652 // If this fails, for example due to a missing element, we simply treat the | |
| 653 // value as JavaScript undefined. | |
| 654 WebBindings::getProperty(0, object, WebBindings::getIntIdentifier(i), | |
| 655 &value_variant); | |
| 656 jvalue element = CoerceJavaScriptValueToJavaValue(value_variant, | |
| 657 target_inner_type, | |
| 658 false); | |
| 659 SetArrayElement(result, target_inner_type, i, element); | |
| 660 // CoerceJavaScriptValueToJavaValue() creates new local references to | |
| 661 // strings, objects and arrays. Of these, only strings can occur here. | |
| 662 // SetArrayElement() causes the array to take its own reference to the | |
| 663 // string, so we can now release the local reference. | |
| 664 DCHECK_NE(JavaType::TypeObject, target_inner_type.type); | |
| 665 DCHECK_NE(JavaType::TypeArray, target_inner_type.type); | |
| 666 ReleaseJavaValueIfRequired(env, &element, target_inner_type); | |
| 667 WebBindings::releaseVariantValue(&value_variant); | |
| 668 } | |
| 669 | |
| 670 return result; | |
| 671 } | |
| 672 | |
| 673 jvalue CoerceJavaScriptObjectToJavaValue(const NPVariant& variant, | |
| 674 const JavaType& target_type, | |
| 675 bool coerce_to_string) { | |
| 676 // This covers both JavaScript objects (including arrays) and Java objects. | |
| 677 // See http://jdk6.java.net/plugin2/liveconnect/#JS_OTHER_OBJECTS, | |
| 678 // http://jdk6.java.net/plugin2/liveconnect/#JS_ARRAY_VALUES and | |
| 679 // http://jdk6.java.net/plugin2/liveconnect/#JS_JAVA_OBJECTS | |
| 680 DCHECK_EQ(NPVariantType_Object, variant.type); | |
| 681 | |
| 682 NPObject* object = NPVARIANT_TO_OBJECT(variant); | |
| 683 bool is_java_object = &JavaNPObject::kNPClass == object->_class; | |
| 684 | |
| 685 jvalue result; | |
| 686 switch (target_type.type) { | |
| 687 case JavaType::TypeObject: | |
| 688 if (is_java_object) { | |
| 689 // LIVECONNECT_COMPLIANCE: Existing behavior is to pass all Java | |
| 690 // objects. Spec requires passing only Java objects which are | |
| 691 // assignment-compatibile. | |
| 692 result.l = AttachCurrentThread()->NewLocalRef( | |
| 693 JavaBoundObject::GetJavaObject(object).obj()); | |
| 694 } else { | |
| 695 // LIVECONNECT_COMPLIANCE: Existing behavior is to pass null. Spec | |
| 696 // requires converting if the target type is | |
| 697 // netscape.javascript.JSObject, otherwise raising a JavaScript | |
| 698 // exception. | |
| 699 result.l = NULL; | |
| 700 } | |
| 701 break; | |
| 702 case JavaType::TypeString: | |
| 703 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to | |
| 704 // "undefined". Spec requires calling toString() on the Java object. | |
| 705 result.l = coerce_to_string ? | |
| 706 ConvertUTF8ToJavaString(AttachCurrentThread(), "undefined"). | |
| 707 Release() : | |
| 708 NULL; | |
| 709 break; | |
| 710 case JavaType::TypeByte: | |
| 711 case JavaType::TypeShort: | |
| 712 case JavaType::TypeInt: | |
| 713 case JavaType::TypeLong: | |
| 714 case JavaType::TypeFloat: | |
| 715 case JavaType::TypeDouble: | |
| 716 case JavaType::TypeChar: { | |
| 717 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to 0. Spec | |
| 718 // requires raising a JavaScript exception. | |
| 719 jvalue null_value = {0}; | |
| 720 result = null_value; | |
| 721 break; | |
| 722 } | |
| 723 case JavaType::TypeBoolean: | |
| 724 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to false. Spec | |
| 725 // requires raising a JavaScript exception. | |
| 726 result.z = JNI_FALSE; | |
| 727 break; | |
| 728 case JavaType::TypeArray: | |
| 729 if (is_java_object) { | |
| 730 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to NULL. Spec | |
| 731 // requires raising a JavaScript exception. | |
| 732 result.l = NULL; | |
| 733 } else { | |
| 734 result.l = CoerceJavaScriptObjectToArray(variant, target_type); | |
| 735 } | |
| 736 break; | |
| 737 case JavaType::TypeVoid: | |
| 738 // Conversion to void must never happen. | |
| 739 NOTREACHED(); | |
| 740 break; | |
| 741 } | |
| 742 return result; | |
| 743 } | |
| 744 | |
| 745 jvalue CoerceJavaScriptNullOrUndefinedToJavaValue(const NPVariant& variant, | |
| 746 const JavaType& target_type, | |
| 747 bool coerce_to_string) { | |
| 748 // See http://jdk6.java.net/plugin2/liveconnect/#JS_NULL. | |
| 749 DCHECK(variant.type == NPVariantType_Null || | |
| 750 variant.type == NPVariantType_Void); | |
| 751 jvalue result; | |
| 752 switch (target_type.type) { | |
| 753 case JavaType::TypeObject: | |
| 754 result.l = NULL; | |
| 755 break; | |
| 756 case JavaType::TypeString: | |
| 757 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert undefined to | |
| 758 // "undefined". Spec requires converting undefined to NULL. | |
| 759 result.l = (coerce_to_string && variant.type == NPVariantType_Void) ? | |
| 760 ConvertUTF8ToJavaString(AttachCurrentThread(), "undefined"). | |
| 761 Release() : | |
| 762 NULL; | |
| 763 break; | |
| 764 case JavaType::TypeByte: | |
| 765 case JavaType::TypeChar: | |
| 766 case JavaType::TypeShort: | |
| 767 case JavaType::TypeInt: | |
| 768 case JavaType::TypeLong: | |
| 769 case JavaType::TypeFloat: | |
| 770 case JavaType::TypeDouble: { | |
| 771 jvalue null_value = {0}; | |
| 772 result = null_value; | |
| 773 break; | |
| 774 } | |
| 775 case JavaType::TypeBoolean: | |
| 776 result.z = JNI_FALSE; | |
| 777 break; | |
| 778 case JavaType::TypeArray: | |
| 779 // LIVECONNECT_COMPLIANCE: Existing behavior is to convert to NULL. Spec | |
| 780 // requires raising a JavaScript exception. | |
| 781 result.l = NULL; | |
| 782 break; | |
| 783 case JavaType::TypeVoid: | |
| 784 // Conversion to void must never happen. | |
| 785 NOTREACHED(); | |
| 786 break; | |
| 787 } | |
| 788 return result; | |
| 789 } | |
| 790 | |
| 791 // coerce_to_string means that we should try to coerce all JavaScript values to | |
| 792 // strings when required, rather than simply converting to NULL. This is used | |
| 793 // to maintain current behaviour, which differs slightly depending upon whether | |
| 794 // or not the coercion in question is for an array element. | |
| 795 // | |
| 796 // Note that the jvalue returned by this method may contain a new local | |
| 797 // reference to an object (string, object or array). This must be released by | |
| 798 // the caller. | |
| 799 jvalue CoerceJavaScriptValueToJavaValue(const NPVariant& variant, | |
| 800 const JavaType& target_type, | |
| 801 bool coerce_to_string) { | |
| 802 // Note that in all these conversions, the relevant field of the jvalue must | |
| 803 // always be explicitly set, as jvalue does not initialize its fields. | |
| 804 | |
| 805 switch (variant.type) { | |
| 806 case NPVariantType_Int32: | |
| 807 case NPVariantType_Double: | |
| 808 return CoerceJavaScriptNumberToJavaValue(variant, target_type, | |
| 809 coerce_to_string); | |
| 810 case NPVariantType_Bool: | |
| 811 return CoerceJavaScriptBooleanToJavaValue(variant, target_type, | |
| 812 coerce_to_string); | |
| 813 case NPVariantType_String: | |
| 814 return CoerceJavaScriptStringToJavaValue(variant, target_type); | |
| 815 case NPVariantType_Object: | |
| 816 return CoerceJavaScriptObjectToJavaValue(variant, target_type, | |
| 817 coerce_to_string); | |
| 818 case NPVariantType_Null: | |
| 819 case NPVariantType_Void: | |
| 820 return CoerceJavaScriptNullOrUndefinedToJavaValue(variant, target_type, | |
| 821 coerce_to_string); | |
| 822 } | |
| 823 NOTREACHED(); | |
| 824 return jvalue(); | |
| 825 } | |
| 826 | |
| 827 } // namespace | |
| 828 | |
| 829 NPObject* JavaBoundObject::Create( | |
| 830 const JavaRef<jobject>& object, | |
| 831 const JavaRef<jclass>& safe_annotation_clazz, | |
| 832 const base::WeakPtr<JavaBridgeDispatcherHostManager>& manager, | |
| 833 bool can_enumerate_methods) { | |
| 834 // The first argument (a plugin's instance handle) is passed through to the | |
| 835 // allocate function directly, and we don't use it, so it's ok to be 0. | |
| 836 // The object is created with a ref count of one. | |
| 837 NPObject* np_object = WebBindings::createObject(0, const_cast<NPClass*>( | |
| 838 &JavaNPObject::kNPClass)); | |
| 839 // The NPObject takes ownership of the JavaBoundObject. | |
| 840 reinterpret_cast<JavaNPObject*>(np_object)->bound_object = | |
| 841 new JavaBoundObject( | |
| 842 object, safe_annotation_clazz, manager, can_enumerate_methods); | |
| 843 return np_object; | |
| 844 } | |
| 845 | |
| 846 JavaBoundObject::JavaBoundObject( | |
| 847 const JavaRef<jobject>& object, | |
| 848 const JavaRef<jclass>& safe_annotation_clazz, | |
| 849 const base::WeakPtr<JavaBridgeDispatcherHostManager>& manager, | |
| 850 bool can_enumerate_methods) | |
| 851 : java_object_(AttachCurrentThread(), object.obj()), | |
| 852 manager_(manager), | |
| 853 are_methods_set_up_(false), | |
| 854 object_get_class_method_id_(NULL), | |
| 855 can_enumerate_methods_(can_enumerate_methods), | |
| 856 safe_annotation_clazz_(safe_annotation_clazz) { | |
| 857 BrowserThread::PostTask( | |
| 858 BrowserThread::UI, FROM_HERE, | |
| 859 base::Bind(&JavaBridgeDispatcherHostManager::JavaBoundObjectCreated, | |
| 860 manager_, | |
| 861 base::android::ScopedJavaGlobalRef<jobject>(object))); | |
| 862 // Other than informing the JavaBridgeDispatcherHostManager that a java bound | |
| 863 // object has been created (above), we don't do anything else with our Java | |
| 864 // object when first created. We do it all lazily when a method is first | |
| 865 // invoked. | |
| 866 } | |
| 867 | |
| 868 JavaBoundObject::~JavaBoundObject() { | |
| 869 BrowserThread::PostTask( | |
| 870 BrowserThread::UI, FROM_HERE, | |
| 871 base::Bind(&JavaBridgeDispatcherHostManager::JavaBoundObjectDestroyed, | |
| 872 manager_, | |
| 873 base::android::ScopedJavaGlobalRef<jobject>( | |
| 874 java_object_.get(AttachCurrentThread())))); | |
| 875 } | |
| 876 | |
| 877 ScopedJavaLocalRef<jobject> JavaBoundObject::GetJavaObject(NPObject* object) { | |
| 878 DCHECK_EQ(&JavaNPObject::kNPClass, object->_class); | |
| 879 JavaBoundObject* jbo = reinterpret_cast<JavaNPObject*>(object)->bound_object; | |
| 880 return jbo->java_object_.get(AttachCurrentThread()); | |
| 881 } | |
| 882 | |
| 883 std::vector<std::string> JavaBoundObject::GetMethodNames() const { | |
| 884 EnsureMethodsAreSetUp(); | |
| 885 std::vector<std::string> result; | |
| 886 for (JavaMethodMap::const_iterator it = methods_.begin(); | |
| 887 it != methods_.end(); | |
| 888 it = methods_.upper_bound(it->first)) { | |
| 889 result.push_back(it->first); | |
| 890 } | |
| 891 return result; | |
| 892 } | |
| 893 | |
| 894 bool JavaBoundObject::HasMethod(const std::string& name) const { | |
| 895 EnsureMethodsAreSetUp(); | |
| 896 return methods_.find(name) != methods_.end(); | |
| 897 } | |
| 898 | |
| 899 bool JavaBoundObject::Invoke(const std::string& name, const NPVariant* args, | |
| 900 size_t arg_count, NPVariant* result) { | |
| 901 EnsureMethodsAreSetUp(); | |
| 902 | |
| 903 // Get all methods with the correct name. | |
| 904 std::pair<JavaMethodMap::const_iterator, JavaMethodMap::const_iterator> | |
| 905 iters = methods_.equal_range(name); | |
| 906 if (iters.first == iters.second) { | |
| 907 return false; | |
| 908 } | |
| 909 | |
| 910 // Take the first method with the correct number of arguments. | |
| 911 JavaMethod* method = NULL; | |
| 912 for (JavaMethodMap::const_iterator iter = iters.first; iter != iters.second; | |
| 913 ++iter) { | |
| 914 if (iter->second->num_parameters() == arg_count) { | |
| 915 method = iter->second.get(); | |
| 916 break; | |
| 917 } | |
| 918 } | |
| 919 if (!method) { | |
| 920 return false; | |
| 921 } | |
| 922 | |
| 923 // Block access to java.lang.Object.getClass. | |
| 924 // As it is declared to be final, it is sufficient to compare methodIDs. | |
| 925 if (method->id() == object_get_class_method_id_) { | |
| 926 BrowserThread::PostTask( | |
| 927 BrowserThread::UI, FROM_HERE, | |
| 928 base::Bind(&JavaBoundObject::ThrowSecurityException, | |
| 929 kAccessToObjectGetClassIsBlocked)); | |
| 930 return false; | |
| 931 } | |
| 932 | |
| 933 // Coerce | |
| 934 std::vector<jvalue> parameters(arg_count); | |
| 935 for (size_t i = 0; i < arg_count; ++i) { | |
| 936 parameters[i] = CoerceJavaScriptValueToJavaValue(args[i], | |
| 937 method->parameter_type(i), | |
| 938 true); | |
| 939 } | |
| 940 | |
| 941 JNIEnv* env = AttachCurrentThread(); | |
| 942 | |
| 943 ScopedJavaLocalRef<jobject> obj; | |
| 944 ScopedJavaLocalRef<jclass> cls; | |
| 945 bool ok = false; | |
| 946 if (method->is_static()) { | |
| 947 cls = GetLocalClassRef(env); | |
| 948 } else { | |
| 949 obj = java_object_.get(env); | |
| 950 } | |
| 951 if (!obj.is_null() || !cls.is_null()) { | |
| 952 // Call | |
| 953 ok = CallJNIMethod(obj.obj(), cls.obj(), method->return_type(), | |
| 954 method->id(), ¶meters[0], result, | |
| 955 safe_annotation_clazz_, | |
| 956 manager_, | |
| 957 can_enumerate_methods_); | |
| 958 } | |
| 959 | |
| 960 // Now that we're done with the jvalue, release any local references created | |
| 961 // by CoerceJavaScriptValueToJavaValue(). | |
| 962 for (size_t i = 0; i < arg_count; ++i) { | |
| 963 ReleaseJavaValueIfRequired(env, ¶meters[i], method->parameter_type(i)); | |
| 964 } | |
| 965 | |
| 966 return ok; | |
| 967 } | |
| 968 | |
| 969 ScopedJavaLocalRef<jclass> JavaBoundObject::GetLocalClassRef( | |
| 970 JNIEnv* env) const { | |
| 971 if (!object_get_class_method_id_) { | |
| 972 object_get_class_method_id_ = GetMethodIDFromClassName( | |
| 973 env, kJavaLangObject, kGetClass, kReturningJavaLangClass); | |
| 974 } | |
| 975 | |
| 976 ScopedJavaLocalRef<jobject> obj = java_object_.get(env); | |
| 977 if (!obj.is_null()) { | |
| 978 return ScopedJavaLocalRef<jclass>(env, static_cast<jclass>( | |
| 979 env->CallObjectMethod(obj.obj(), object_get_class_method_id_))); | |
| 980 } else { | |
| 981 return ScopedJavaLocalRef<jclass>(); | |
| 982 } | |
| 983 } | |
| 984 | |
| 985 void JavaBoundObject::EnsureMethodsAreSetUp() const { | |
| 986 if (are_methods_set_up_) | |
| 987 return; | |
| 988 are_methods_set_up_ = true; | |
| 989 | |
| 990 JNIEnv* env = AttachCurrentThread(); | |
| 991 | |
| 992 ScopedJavaLocalRef<jclass> clazz = GetLocalClassRef(env); | |
| 993 if (clazz.is_null()) { | |
| 994 return; | |
| 995 } | |
| 996 | |
| 997 ScopedJavaLocalRef<jobjectArray> methods(env, static_cast<jobjectArray>( | |
| 998 env->CallObjectMethod(clazz.obj(), GetMethodIDFromClassName( | |
| 999 env, | |
| 1000 kJavaLangClass, | |
| 1001 kGetMethods, | |
| 1002 kReturningJavaLangReflectMethodArray)))); | |
| 1003 | |
| 1004 size_t num_methods = env->GetArrayLength(methods.obj()); | |
| 1005 // Java objects always have public methods. | |
| 1006 DCHECK(num_methods); | |
| 1007 | |
| 1008 for (size_t i = 0; i < num_methods; ++i) { | |
| 1009 ScopedJavaLocalRef<jobject> java_method( | |
| 1010 env, | |
| 1011 env->GetObjectArrayElement(methods.obj(), i)); | |
| 1012 | |
| 1013 if (!safe_annotation_clazz_.is_null()) { | |
| 1014 jboolean safe = env->CallBooleanMethod(java_method.obj(), | |
| 1015 GetMethodIDFromClassName( | |
| 1016 env, | |
| 1017 kJavaLangReflectMethod, | |
| 1018 kIsAnnotationPresent, | |
| 1019 kTakesJavaLangClassReturningBoolean), | |
| 1020 safe_annotation_clazz_.obj()); | |
| 1021 | |
| 1022 if (!safe) | |
| 1023 continue; | |
| 1024 } | |
| 1025 | |
| 1026 JavaMethod* method = new JavaMethod(java_method); | |
| 1027 methods_.insert(std::make_pair(method->name(), method)); | |
| 1028 } | |
| 1029 } | |
| 1030 | |
| 1031 // static | |
| 1032 void JavaBoundObject::ThrowSecurityException(const char* message) { | |
| 1033 DCHECK_CURRENTLY_ON(BrowserThread::UI); | |
| 1034 JNIEnv* env = AttachCurrentThread(); | |
| 1035 base::android::ScopedJavaLocalRef<jclass> clazz( | |
| 1036 env, env->FindClass(kJavaLangSecurityExceptionClass)); | |
| 1037 env->ThrowNew(clazz.obj(), message); | |
| 1038 } | |
| 1039 | |
| 1040 } // namespace content | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 336313018:
[Android] Move content/browser/{renderer_host => android}/java/* (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src