Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 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 | |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 17 | #include "java_lang_Class.h" |
| 18 | |
Nicolas Geoffray | 0e7fa6b | 2016-01-13 15:28:58 +0000 | [diff] [blame] | 19 | #include <iostream> |
| 20 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 21 | #include "art_field-inl.h" |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 22 | #include "art_method-inl.h" |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 23 | #include "base/enums.h" |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 24 | #include "class_linker-inl.h" |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 25 | #include "common_throws.h" |
David Sehr | b2ec9f5 | 2018-02-21 13:20:31 -0800 | [diff] [blame] | 26 | #include "dex/descriptors_names.h" |
David Sehr | 9e734c7 | 2018-01-04 17:56:19 -0800 | [diff] [blame] | 27 | #include "dex/dex_file-inl.h" |
| 28 | #include "dex/dex_file_annotations.h" |
David Sehr | 0225f8e | 2018-01-31 08:52:24 +0000 | [diff] [blame] | 29 | #include "dex/utf.h" |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 30 | #include "hidden_api.h" |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 31 | #include "jni_internal.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 32 | #include "mirror/class-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 33 | #include "mirror/class_loader.h" |
Hiroshi Yamauchi | 02d2f29 | 2015-04-03 13:35:16 -0700 | [diff] [blame] | 34 | #include "mirror/field-inl.h" |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 35 | #include "mirror/method.h" |
Orion Hodson | 198a27e | 2018-04-06 15:41:28 +0100 | [diff] [blame] | 36 | #include "mirror/method_handles_lookup.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 37 | #include "mirror/object-inl.h" |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 38 | #include "mirror/object_array-inl.h" |
| 39 | #include "mirror/string-inl.h" |
Andreas Gampe | 87583b3 | 2017-05-25 11:22:18 -0700 | [diff] [blame] | 40 | #include "native_util.h" |
Steven Moreland | e431e27 | 2017-07-18 16:53:49 -0700 | [diff] [blame] | 41 | #include "nativehelper/jni_macros.h" |
Andreas Gampe | 373a9b5 | 2017-10-18 09:01:57 -0700 | [diff] [blame] | 42 | #include "nativehelper/scoped_local_ref.h" |
| 43 | #include "nativehelper/scoped_utf_chars.h" |
Steven Moreland | e431e27 | 2017-07-18 16:53:49 -0700 | [diff] [blame] | 44 | #include "nth_caller_visitor.h" |
Mathieu Chartier | a59d9b2 | 2016-09-26 18:13:17 -0700 | [diff] [blame] | 45 | #include "obj_ptr-inl.h" |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 46 | #include "reflection.h" |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 47 | #include "scoped_fast_native_object_access-inl.h" |
Steven Moreland | e431e27 | 2017-07-18 16:53:49 -0700 | [diff] [blame] | 48 | #include "scoped_thread_state_change-inl.h" |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 49 | #include "well_known_classes.h" |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 50 | |
| 51 | namespace art { |
| 52 | |
Orion Hodson | 198a27e | 2018-04-06 15:41:28 +0100 | [diff] [blame] | 53 | // Returns true if the first caller outside of the Class class or java.lang.invoke package |
| 54 | // is in a platform DEX file. |
David Brazdil | f2a300b | 2018-03-27 08:14:25 +0000 | [diff] [blame] | 55 | static bool IsCallerInPlatformDex(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_) { |
Orion Hodson | 198a27e | 2018-04-06 15:41:28 +0100 | [diff] [blame] | 56 | // Walk the stack and find the first frame not from java.lang.Class and not from java.lang.invoke. |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 57 | // This is very expensive. Save this till the last. |
Orion Hodson | 198a27e | 2018-04-06 15:41:28 +0100 | [diff] [blame] | 58 | struct FirstExternalCallerVisitor : public StackVisitor { |
| 59 | explicit FirstExternalCallerVisitor(Thread* thread) |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 60 | : StackVisitor(thread, nullptr, StackVisitor::StackWalkKind::kIncludeInlinedFrames), |
| 61 | caller(nullptr) { |
| 62 | } |
| 63 | |
| 64 | bool VisitFrame() REQUIRES_SHARED(Locks::mutator_lock_) { |
| 65 | ArtMethod *m = GetMethod(); |
| 66 | if (m == nullptr) { |
| 67 | // Attached native thread. Assume this is *not* boot class path. |
| 68 | caller = nullptr; |
| 69 | return false; |
| 70 | } else if (m->IsRuntimeMethod()) { |
| 71 | // Internal runtime method, continue walking the stack. |
| 72 | return true; |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 73 | } |
Orion Hodson | 198a27e | 2018-04-06 15:41:28 +0100 | [diff] [blame] | 74 | |
| 75 | ObjPtr<mirror::Class> declaring_class = m->GetDeclaringClass(); |
| 76 | if (declaring_class->IsBootStrapClassLoaded()) { |
| 77 | if (declaring_class->IsClassClass()) { |
| 78 | return true; |
| 79 | } |
| 80 | ObjPtr<mirror::Class> lookup_class = mirror::MethodHandlesLookup::StaticClass(); |
| 81 | if (declaring_class == lookup_class || declaring_class->IsInSamePackage(lookup_class)) { |
| 82 | // Check classes in the java.lang.invoke package. At the time of writing, the |
| 83 | // classes of interest are MethodHandles and MethodHandles.Lookup, but this |
| 84 | // is subject to change so conservatively cover the entire package. |
| 85 | return true; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | caller = m; |
| 90 | return false; |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | ArtMethod* caller; |
| 94 | }; |
| 95 | |
Orion Hodson | 198a27e | 2018-04-06 15:41:28 +0100 | [diff] [blame] | 96 | FirstExternalCallerVisitor visitor(self); |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 97 | visitor.WalkStack(); |
David Brazdil | a02cb11 | 2018-01-31 11:36:39 +0000 | [diff] [blame] | 98 | return visitor.caller != nullptr && |
David Brazdil | f2a300b | 2018-03-27 08:14:25 +0000 | [diff] [blame] | 99 | hiddenapi::IsCallerInPlatformDex(visitor.caller->GetDeclaringClass()); |
David Brazdil | a02cb11 | 2018-01-31 11:36:39 +0000 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | // Returns true if the first non-ClassClass caller up the stack is not allowed to |
| 103 | // access hidden APIs. This can be *very* expensive. Never call this in a loop. |
| 104 | ALWAYS_INLINE static bool ShouldEnforceHiddenApi(Thread* self) |
| 105 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathew Inwood | a5dc52c | 2018-02-19 15:30:51 +0000 | [diff] [blame] | 106 | hiddenapi::EnforcementPolicy policy = Runtime::Current()->GetHiddenApiEnforcementPolicy(); |
David Brazdil | f2a300b | 2018-03-27 08:14:25 +0000 | [diff] [blame] | 107 | return policy != hiddenapi::EnforcementPolicy::kNoChecks && !IsCallerInPlatformDex(self); |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | // Returns true if the first non-ClassClass caller up the stack should not be |
| 111 | // allowed access to `member`. |
| 112 | template<typename T> |
| 113 | ALWAYS_INLINE static bool ShouldBlockAccessToMember(T* member, Thread* self) |
| 114 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Narayan Kamath | e453a8d | 2018-04-03 15:23:46 +0100 | [diff] [blame] | 115 | hiddenapi::Action action = hiddenapi::GetMemberAction( |
David Brazdil | f2a300b | 2018-03-27 08:14:25 +0000 | [diff] [blame] | 116 | member, self, IsCallerInPlatformDex, hiddenapi::kReflection); |
Narayan Kamath | e453a8d | 2018-04-03 15:23:46 +0100 | [diff] [blame] | 117 | if (action != hiddenapi::kAllow) { |
| 118 | hiddenapi::NotifyHiddenApiListener(member); |
| 119 | } |
| 120 | |
| 121 | return action == hiddenapi::kDeny; |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 122 | } |
| 123 | |
| 124 | // Returns true if a class member should be discoverable with reflection given |
| 125 | // the criteria. Some reflection calls only return public members |
| 126 | // (public_only == true), some members should be hidden from non-boot class path |
| 127 | // callers (enforce_hidden_api == true). |
Mathew Inwood | 64ee8ae | 2018-04-09 12:24:55 +0100 | [diff] [blame^] | 128 | template<typename T> |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 129 | ALWAYS_INLINE static bool IsDiscoverable(bool public_only, |
| 130 | bool enforce_hidden_api, |
Mathew Inwood | 64ee8ae | 2018-04-09 12:24:55 +0100 | [diff] [blame^] | 131 | T* member) |
| 132 | REQUIRES_SHARED(Locks::mutator_lock_) { |
| 133 | if (public_only && ((member->GetAccessFlags() & kAccPublic) == 0)) { |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 134 | return false; |
| 135 | } |
| 136 | |
Mathew Inwood | 64ee8ae | 2018-04-09 12:24:55 +0100 | [diff] [blame^] | 137 | return hiddenapi::GetMemberAction(member, |
| 138 | nullptr, |
| 139 | [enforce_hidden_api] (Thread*) { return !enforce_hidden_api; }, |
| 140 | hiddenapi::kNone) |
| 141 | != hiddenapi::kDeny; |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 142 | } |
| 143 | |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 144 | ALWAYS_INLINE static inline ObjPtr<mirror::Class> DecodeClass( |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 145 | const ScopedFastNativeObjectAccess& soa, jobject java_class) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 146 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 147 | ObjPtr<mirror::Class> c = soa.Decode<mirror::Class>(java_class); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 148 | DCHECK(c != nullptr); |
Elliott Hughes | 1521693 | 2012-03-21 21:53:06 -0700 | [diff] [blame] | 149 | DCHECK(c->IsClass()); |
Elliott Hughes | 923e8b8 | 2012-03-23 11:44:07 -0700 | [diff] [blame] | 150 | // TODO: we could EnsureInitialized here, rather than on every reflective get/set or invoke . |
| 151 | // For now, we conservatively preserve the old dalvik behavior. A quick "IsInitialized" check |
| 152 | // every time probably doesn't make much difference to reflection performance anyway. |
| 153 | return c; |
Elliott Hughes | 1521693 | 2012-03-21 21:53:06 -0700 | [diff] [blame] | 154 | } |
| 155 | |
Brian Carlstrom | f91c8c3 | 2011-09-21 17:30:34 -0700 | [diff] [blame] | 156 | // "name" is in "binary name" format, e.g. "dalvik.system.Debug$1". |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 157 | static jclass Class_classForName(JNIEnv* env, jclass, jstring javaName, jboolean initialize, |
| 158 | jobject javaLoader) { |
Ian Rogers | 53b8b09 | 2014-03-13 23:45:53 -0700 | [diff] [blame] | 159 | ScopedFastNativeObjectAccess soa(env); |
Brian Carlstrom | f91c8c3 | 2011-09-21 17:30:34 -0700 | [diff] [blame] | 160 | ScopedUtfChars name(env, javaName); |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 161 | if (name.c_str() == nullptr) { |
| 162 | return nullptr; |
Brian Carlstrom | f91c8c3 | 2011-09-21 17:30:34 -0700 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | // We need to validate and convert the name (from x.y.z to x/y/z). This |
| 166 | // is especially handy for array types, since we want to avoid |
| 167 | // auto-generating bogus array classes. |
Elliott Hughes | 906e685 | 2011-10-28 14:52:10 -0700 | [diff] [blame] | 168 | if (!IsValidBinaryClassName(name.c_str())) { |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 169 | soa.Self()->ThrowNewExceptionF("Ljava/lang/ClassNotFoundException;", |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 170 | "Invalid name: %s", name.c_str()); |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 171 | return nullptr; |
Brian Carlstrom | f91c8c3 | 2011-09-21 17:30:34 -0700 | [diff] [blame] | 172 | } |
| 173 | |
| 174 | std::string descriptor(DotToDescriptor(name.c_str())); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 175 | StackHandleScope<2> hs(soa.Self()); |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 176 | Handle<mirror::ClassLoader> class_loader( |
| 177 | hs.NewHandle(soa.Decode<mirror::ClassLoader>(javaLoader))); |
Brian Carlstrom | f91c8c3 | 2011-09-21 17:30:34 -0700 | [diff] [blame] | 178 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 179 | Handle<mirror::Class> c( |
| 180 | hs.NewHandle(class_linker->FindClass(soa.Self(), descriptor.c_str(), class_loader))); |
Andreas Gampe | fa4333d | 2017-02-14 11:10:34 -0800 | [diff] [blame] | 181 | if (c == nullptr) { |
Elliott Hughes | 844f9a0 | 2012-01-24 20:19:58 -0800 | [diff] [blame] | 182 | ScopedLocalRef<jthrowable> cause(env, env->ExceptionOccurred()); |
Brian Carlstrom | 395520e | 2011-09-25 19:35:00 -0700 | [diff] [blame] | 183 | env->ExceptionClear(); |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 184 | jthrowable cnfe = reinterpret_cast<jthrowable>( |
| 185 | env->NewObject(WellKnownClasses::java_lang_ClassNotFoundException, |
| 186 | WellKnownClasses::java_lang_ClassNotFoundException_init, |
| 187 | javaName, |
| 188 | cause.get())); |
Ian Rogers | c114b5f | 2014-07-21 08:55:01 -0700 | [diff] [blame] | 189 | if (cnfe != nullptr) { |
| 190 | // Make sure allocation didn't fail with an OOME. |
| 191 | env->Throw(cnfe); |
| 192 | } |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 193 | return nullptr; |
Brian Carlstrom | 395520e | 2011-09-25 19:35:00 -0700 | [diff] [blame] | 194 | } |
Brian Carlstrom | f91c8c3 | 2011-09-21 17:30:34 -0700 | [diff] [blame] | 195 | if (initialize) { |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 196 | class_linker->EnsureInitialized(soa.Self(), c, true, true); |
Brian Carlstrom | f91c8c3 | 2011-09-21 17:30:34 -0700 | [diff] [blame] | 197 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 198 | return soa.AddLocalReference<jclass>(c.Get()); |
Brian Carlstrom | f91c8c3 | 2011-09-21 17:30:34 -0700 | [diff] [blame] | 199 | } |
| 200 | |
Vladimir Marko | 7287c4d | 2018-02-15 10:41:07 +0000 | [diff] [blame] | 201 | static jclass Class_getPrimitiveClass(JNIEnv* env, jclass, jstring name) { |
| 202 | ScopedFastNativeObjectAccess soa(env); |
| 203 | ObjPtr<mirror::Class> klass = mirror::Class::GetPrimitiveClass(soa.Decode<mirror::String>(name)); |
| 204 | return soa.AddLocalReference<jclass>(klass); |
| 205 | } |
| 206 | |
Elliott Hughes | 0512f02 | 2012-03-15 22:10:52 -0700 | [diff] [blame] | 207 | static jstring Class_getNameNative(JNIEnv* env, jobject javaThis) { |
Ian Rogers | 1eb512d | 2013-10-18 15:42:20 -0700 | [diff] [blame] | 208 | ScopedFastNativeObjectAccess soa(env); |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 209 | StackHandleScope<1> hs(soa.Self()); |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 210 | ObjPtr<mirror::Class> c = DecodeClass(soa, javaThis); |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 211 | return soa.AddLocalReference<jstring>(mirror::Class::ComputeName(hs.NewHandle(c))); |
Elliott Hughes | 6bdc3b2 | 2011-09-16 19:24:10 -0700 | [diff] [blame] | 212 | } |
| 213 | |
Narayan Kamath | 6b2dc31 | 2017-03-14 13:26:12 +0000 | [diff] [blame] | 214 | // TODO: Move this to mirror::Class ? Other mirror types that commonly appear |
| 215 | // as arrays have a GetArrayClass() method. |
| 216 | static ObjPtr<mirror::Class> GetClassArrayClass(Thread* self) |
| 217 | REQUIRES_SHARED(Locks::mutator_lock_) { |
| 218 | ObjPtr<mirror::Class> class_class = mirror::Class::GetJavaLangClass(); |
| 219 | return Runtime::Current()->GetClassLinker()->FindArrayClass(self, &class_class); |
| 220 | } |
| 221 | |
| 222 | static jobjectArray Class_getInterfacesInternal(JNIEnv* env, jobject javaThis) { |
Ian Rogers | 1eb512d | 2013-10-18 15:42:20 -0700 | [diff] [blame] | 223 | ScopedFastNativeObjectAccess soa(env); |
Narayan Kamath | 6b2dc31 | 2017-03-14 13:26:12 +0000 | [diff] [blame] | 224 | StackHandleScope<4> hs(soa.Self()); |
| 225 | Handle<mirror::Class> klass = hs.NewHandle(DecodeClass(soa, javaThis)); |
| 226 | |
| 227 | if (klass->IsProxyClass()) { |
| 228 | return soa.AddLocalReference<jobjectArray>(klass->GetProxyInterfaces()->Clone(soa.Self())); |
| 229 | } |
| 230 | |
| 231 | const DexFile::TypeList* iface_list = klass->GetInterfaceTypeList(); |
| 232 | if (iface_list == nullptr) { |
| 233 | return nullptr; |
| 234 | } |
| 235 | |
| 236 | const uint32_t num_ifaces = iface_list->Size(); |
| 237 | Handle<mirror::Class> class_array_class = hs.NewHandle(GetClassArrayClass(soa.Self())); |
| 238 | Handle<mirror::ObjectArray<mirror::Class>> ifaces = hs.NewHandle( |
| 239 | mirror::ObjectArray<mirror::Class>::Alloc(soa.Self(), class_array_class.Get(), num_ifaces)); |
| 240 | if (ifaces.IsNull()) { |
| 241 | DCHECK(soa.Self()->IsExceptionPending()); |
| 242 | return nullptr; |
| 243 | } |
| 244 | |
| 245 | // Check that we aren't in an active transaction, we call SetWithoutChecks |
| 246 | // with kActiveTransaction == false. |
| 247 | DCHECK(!Runtime::Current()->IsActiveTransaction()); |
| 248 | |
Vladimir Marko | 666ee3d | 2017-12-11 18:37:36 +0000 | [diff] [blame] | 249 | ClassLinker* linker = Runtime::Current()->GetClassLinker(); |
Narayan Kamath | 6b2dc31 | 2017-03-14 13:26:12 +0000 | [diff] [blame] | 250 | MutableHandle<mirror::Class> interface(hs.NewHandle<mirror::Class>(nullptr)); |
| 251 | for (uint32_t i = 0; i < num_ifaces; ++i) { |
| 252 | const dex::TypeIndex type_idx = iface_list->GetTypeItem(i).type_idx_; |
Vladimir Marko | 666ee3d | 2017-12-11 18:37:36 +0000 | [diff] [blame] | 253 | interface.Assign(linker->LookupResolvedType(type_idx, klass.Get())); |
Narayan Kamath | 6b2dc31 | 2017-03-14 13:26:12 +0000 | [diff] [blame] | 254 | ifaces->SetWithoutChecks<false>(i, interface.Get()); |
| 255 | } |
| 256 | |
| 257 | return soa.AddLocalReference<jobjectArray>(ifaces.Get()); |
Elliott Hughes | 2ed52c4 | 2012-03-21 16:56:56 -0700 | [diff] [blame] | 258 | } |
| 259 | |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 260 | static mirror::ObjectArray<mirror::Field>* GetDeclaredFields( |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 261 | Thread* self, ObjPtr<mirror::Class> klass, bool public_only, bool force_resolve) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 262 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 263 | StackHandleScope<1> hs(self); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 264 | IterationRange<StrideIterator<ArtField>> ifields = klass->GetIFields(); |
| 265 | IterationRange<StrideIterator<ArtField>> sfields = klass->GetSFields(); |
| 266 | size_t array_size = klass->NumInstanceFields() + klass->NumStaticFields(); |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 267 | bool enforce_hidden_api = ShouldEnforceHiddenApi(self); |
| 268 | // Lets go subtract all the non discoverable fields. |
| 269 | for (ArtField& field : ifields) { |
Mathew Inwood | 64ee8ae | 2018-04-09 12:24:55 +0100 | [diff] [blame^] | 270 | if (!IsDiscoverable(public_only, enforce_hidden_api, &field)) { |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 271 | --array_size; |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 272 | } |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 273 | } |
| 274 | for (ArtField& field : sfields) { |
Mathew Inwood | 64ee8ae | 2018-04-09 12:24:55 +0100 | [diff] [blame^] | 275 | if (!IsDiscoverable(public_only, enforce_hidden_api, &field)) { |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 276 | --array_size; |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 277 | } |
| 278 | } |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 279 | size_t array_idx = 0; |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 280 | auto object_array = hs.NewHandle(mirror::ObjectArray<mirror::Field>::Alloc( |
| 281 | self, mirror::Field::ArrayClass(), array_size)); |
Andreas Gampe | fa4333d | 2017-02-14 11:10:34 -0800 | [diff] [blame] | 282 | if (object_array == nullptr) { |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 283 | return nullptr; |
| 284 | } |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 285 | for (ArtField& field : ifields) { |
Mathew Inwood | 64ee8ae | 2018-04-09 12:24:55 +0100 | [diff] [blame^] | 286 | if (IsDiscoverable(public_only, enforce_hidden_api, &field)) { |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 287 | auto* reflect_field = mirror::Field::CreateFromArtField<kRuntimePointerSize>(self, |
| 288 | &field, |
| 289 | force_resolve); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 290 | if (reflect_field == nullptr) { |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 291 | if (kIsDebugBuild) { |
| 292 | self->AssertPendingException(); |
| 293 | } |
| 294 | // Maybe null due to OOME or type resolving exception. |
| 295 | return nullptr; |
| 296 | } |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 297 | object_array->SetWithoutChecks<false>(array_idx++, reflect_field); |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 298 | } |
| 299 | } |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 300 | for (ArtField& field : sfields) { |
Mathew Inwood | 64ee8ae | 2018-04-09 12:24:55 +0100 | [diff] [blame^] | 301 | if (IsDiscoverable(public_only, enforce_hidden_api, &field)) { |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 302 | auto* reflect_field = mirror::Field::CreateFromArtField<kRuntimePointerSize>(self, |
| 303 | &field, |
| 304 | force_resolve); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 305 | if (reflect_field == nullptr) { |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 306 | if (kIsDebugBuild) { |
| 307 | self->AssertPendingException(); |
| 308 | } |
| 309 | return nullptr; |
| 310 | } |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 311 | object_array->SetWithoutChecks<false>(array_idx++, reflect_field); |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 312 | } |
| 313 | } |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 314 | DCHECK_EQ(array_idx, array_size); |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 315 | return object_array.Get(); |
| 316 | } |
| 317 | |
| 318 | static jobjectArray Class_getDeclaredFieldsUnchecked(JNIEnv* env, jobject javaThis, |
| 319 | jboolean publicOnly) { |
| 320 | ScopedFastNativeObjectAccess soa(env); |
| 321 | return soa.AddLocalReference<jobjectArray>( |
| 322 | GetDeclaredFields(soa.Self(), DecodeClass(soa, javaThis), publicOnly != JNI_FALSE, false)); |
| 323 | } |
| 324 | |
| 325 | static jobjectArray Class_getDeclaredFields(JNIEnv* env, jobject javaThis) { |
| 326 | ScopedFastNativeObjectAccess soa(env); |
| 327 | return soa.AddLocalReference<jobjectArray>( |
| 328 | GetDeclaredFields(soa.Self(), DecodeClass(soa, javaThis), false, true)); |
| 329 | } |
| 330 | |
| 331 | static jobjectArray Class_getPublicDeclaredFields(JNIEnv* env, jobject javaThis) { |
| 332 | ScopedFastNativeObjectAccess soa(env); |
| 333 | return soa.AddLocalReference<jobjectArray>( |
| 334 | GetDeclaredFields(soa.Self(), DecodeClass(soa, javaThis), true, true)); |
| 335 | } |
| 336 | |
| 337 | // Performs a binary search through an array of fields, TODO: Is this fast enough if we don't use |
| 338 | // the dex cache for lookups? I think CompareModifiedUtf8ToUtf16AsCodePointValues should be fairly |
| 339 | // fast. |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 340 | ALWAYS_INLINE static inline ArtField* FindFieldByName(ObjPtr<mirror::String> name, |
| 341 | LengthPrefixedArray<ArtField>* fields) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 342 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 343 | if (fields == nullptr) { |
| 344 | return nullptr; |
| 345 | } |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 346 | size_t low = 0; |
Vladimir Marko | 35831e8 | 2015-09-11 11:59:18 +0100 | [diff] [blame] | 347 | size_t high = fields->size(); |
jessicahandojo | 3aaa37b | 2016-07-29 14:46:37 -0700 | [diff] [blame] | 348 | const bool is_name_compressed = name->IsCompressed(); |
| 349 | const uint16_t* const data = (is_name_compressed) ? nullptr : name->GetValue(); |
| 350 | const uint8_t* const data_compressed = (is_name_compressed) ? name->GetValueCompressed() |
| 351 | : nullptr; |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 352 | const size_t length = name->GetLength(); |
| 353 | while (low < high) { |
| 354 | auto mid = (low + high) / 2; |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 355 | ArtField& field = fields->At(mid); |
jessicahandojo | 3aaa37b | 2016-07-29 14:46:37 -0700 | [diff] [blame] | 356 | int result = 0; |
| 357 | if (is_name_compressed) { |
| 358 | size_t field_length = strlen(field.GetName()); |
| 359 | size_t min_size = (length < field_length) ? length : field_length; |
| 360 | result = memcmp(field.GetName(), data_compressed, min_size); |
| 361 | if (result == 0) { |
| 362 | result = field_length - length; |
| 363 | } |
| 364 | } else { |
| 365 | result = CompareModifiedUtf8ToUtf16AsCodePointValues(field.GetName(), data, length); |
| 366 | } |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 367 | // Alternate approach, only a few % faster at the cost of more allocations. |
| 368 | // int result = field->GetStringName(self, true)->CompareTo(name); |
| 369 | if (result < 0) { |
| 370 | low = mid + 1; |
| 371 | } else if (result > 0) { |
| 372 | high = mid; |
| 373 | } else { |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 374 | return &field; |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 375 | } |
| 376 | } |
| 377 | if (kIsDebugBuild) { |
Vladimir Marko | cf36d49 | 2015-08-12 19:27:26 +0100 | [diff] [blame] | 378 | for (ArtField& field : MakeIterationRangeFromLengthPrefixedArray(fields)) { |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 379 | CHECK_NE(field.GetName(), name->ToModifiedUtf8()); |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 380 | } |
| 381 | } |
| 382 | return nullptr; |
| 383 | } |
| 384 | |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 385 | ALWAYS_INLINE static inline mirror::Field* GetDeclaredField(Thread* self, |
| 386 | ObjPtr<mirror::Class> c, |
| 387 | ObjPtr<mirror::String> name) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 388 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 389 | ArtField* art_field = FindFieldByName(name, c->GetIFieldsPtr()); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 390 | if (art_field != nullptr) { |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 391 | return mirror::Field::CreateFromArtField<kRuntimePointerSize>(self, art_field, true); |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 392 | } |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 393 | art_field = FindFieldByName(name, c->GetSFieldsPtr()); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 394 | if (art_field != nullptr) { |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 395 | return mirror::Field::CreateFromArtField<kRuntimePointerSize>(self, art_field, true); |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 396 | } |
| 397 | return nullptr; |
| 398 | } |
| 399 | |
Alex Light | 72f9075 | 2015-10-01 13:35:09 -0700 | [diff] [blame] | 400 | static mirror::Field* GetPublicFieldRecursive( |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 401 | Thread* self, ObjPtr<mirror::Class> clazz, ObjPtr<mirror::String> name) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 402 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Alex Light | 72f9075 | 2015-10-01 13:35:09 -0700 | [diff] [blame] | 403 | DCHECK(clazz != nullptr); |
| 404 | DCHECK(name != nullptr); |
| 405 | DCHECK(self != nullptr); |
| 406 | |
Nicolas Geoffray | a96f316 | 2016-05-03 14:04:02 +0100 | [diff] [blame] | 407 | StackHandleScope<2> hs(self); |
Alex Light | 72f9075 | 2015-10-01 13:35:09 -0700 | [diff] [blame] | 408 | MutableHandle<mirror::Class> h_clazz(hs.NewHandle(clazz)); |
Nicolas Geoffray | a96f316 | 2016-05-03 14:04:02 +0100 | [diff] [blame] | 409 | Handle<mirror::String> h_name(hs.NewHandle(name)); |
Alex Light | 72f9075 | 2015-10-01 13:35:09 -0700 | [diff] [blame] | 410 | |
| 411 | // We search the current class, its direct interfaces then its superclass. |
Andreas Gampe | fa4333d | 2017-02-14 11:10:34 -0800 | [diff] [blame] | 412 | while (h_clazz != nullptr) { |
Nicolas Geoffray | a96f316 | 2016-05-03 14:04:02 +0100 | [diff] [blame] | 413 | mirror::Field* result = GetDeclaredField(self, h_clazz.Get(), h_name.Get()); |
Alex Light | 72f9075 | 2015-10-01 13:35:09 -0700 | [diff] [blame] | 414 | if ((result != nullptr) && (result->GetAccessFlags() & kAccPublic)) { |
| 415 | return result; |
| 416 | } else if (UNLIKELY(self->IsExceptionPending())) { |
| 417 | // Something went wrong. Bail out. |
| 418 | return nullptr; |
| 419 | } |
| 420 | |
| 421 | uint32_t num_direct_interfaces = h_clazz->NumDirectInterfaces(); |
| 422 | for (uint32_t i = 0; i < num_direct_interfaces; i++) { |
Vladimir Marko | 19a4d37 | 2016-12-08 14:41:46 +0000 | [diff] [blame] | 423 | ObjPtr<mirror::Class> iface = mirror::Class::ResolveDirectInterface(self, h_clazz, i); |
Alex Light | 72f9075 | 2015-10-01 13:35:09 -0700 | [diff] [blame] | 424 | if (UNLIKELY(iface == nullptr)) { |
| 425 | self->AssertPendingException(); |
| 426 | return nullptr; |
| 427 | } |
Nicolas Geoffray | a96f316 | 2016-05-03 14:04:02 +0100 | [diff] [blame] | 428 | result = GetPublicFieldRecursive(self, iface, h_name.Get()); |
Alex Light | 72f9075 | 2015-10-01 13:35:09 -0700 | [diff] [blame] | 429 | if (result != nullptr) { |
| 430 | DCHECK(result->GetAccessFlags() & kAccPublic); |
| 431 | return result; |
| 432 | } else if (UNLIKELY(self->IsExceptionPending())) { |
| 433 | // Something went wrong. Bail out. |
| 434 | return nullptr; |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | // We don't try the superclass if we are an interface. |
| 439 | if (h_clazz->IsInterface()) { |
| 440 | break; |
| 441 | } |
| 442 | |
| 443 | // Get the next class. |
| 444 | h_clazz.Assign(h_clazz->GetSuperClass()); |
| 445 | } |
| 446 | return nullptr; |
| 447 | } |
| 448 | |
| 449 | static jobject Class_getPublicFieldRecursive(JNIEnv* env, jobject javaThis, jstring name) { |
| 450 | ScopedFastNativeObjectAccess soa(env); |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 451 | auto name_string = soa.Decode<mirror::String>(name); |
Alex Light | 72f9075 | 2015-10-01 13:35:09 -0700 | [diff] [blame] | 452 | if (UNLIKELY(name_string == nullptr)) { |
| 453 | ThrowNullPointerException("name == null"); |
| 454 | return nullptr; |
| 455 | } |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 456 | |
Narayan Kamath | e453a8d | 2018-04-03 15:23:46 +0100 | [diff] [blame] | 457 | StackHandleScope<1> hs(soa.Self()); |
| 458 | Handle<mirror::Field> field = hs.NewHandle(GetPublicFieldRecursive( |
| 459 | soa.Self(), DecodeClass(soa, javaThis), name_string)); |
| 460 | if (field.Get() == nullptr || |
| 461 | ShouldBlockAccessToMember(field->GetArtField(), soa.Self())) { |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 462 | return nullptr; |
| 463 | } |
Narayan Kamath | e453a8d | 2018-04-03 15:23:46 +0100 | [diff] [blame] | 464 | return soa.AddLocalReference<jobject>(field.Get()); |
Alex Light | 72f9075 | 2015-10-01 13:35:09 -0700 | [diff] [blame] | 465 | } |
| 466 | |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 467 | static jobject Class_getDeclaredField(JNIEnv* env, jobject javaThis, jstring name) { |
| 468 | ScopedFastNativeObjectAccess soa(env); |
Nicolas Geoffray | 9d07414 | 2016-09-30 09:51:32 +0100 | [diff] [blame] | 469 | StackHandleScope<3> hs(soa.Self()); |
| 470 | Handle<mirror::String> h_string = hs.NewHandle(soa.Decode<mirror::String>(name)); |
Andreas Gampe | fa4333d | 2017-02-14 11:10:34 -0800 | [diff] [blame] | 471 | if (h_string == nullptr) { |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 472 | ThrowNullPointerException("name == null"); |
| 473 | return nullptr; |
| 474 | } |
Nicolas Geoffray | 9d07414 | 2016-09-30 09:51:32 +0100 | [diff] [blame] | 475 | Handle<mirror::Class> h_klass = hs.NewHandle(DecodeClass(soa, javaThis)); |
| 476 | Handle<mirror::Field> result = |
| 477 | hs.NewHandle(GetDeclaredField(soa.Self(), h_klass.Get(), h_string.Get())); |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 478 | if (result == nullptr || ShouldBlockAccessToMember(result->GetArtField(), soa.Self())) { |
Nicolas Geoffray | 9d07414 | 2016-09-30 09:51:32 +0100 | [diff] [blame] | 479 | std::string name_str = h_string->ToModifiedUtf8(); |
| 480 | if (name_str == "value" && h_klass->IsStringClass()) { |
Nicolas Geoffray | 7ea4c09 | 2016-01-07 10:55:14 +0000 | [diff] [blame] | 481 | // We log the error for this specific case, as the user might just swallow the exception. |
| 482 | // This helps diagnose crashes when applications rely on the String#value field being |
| 483 | // there. |
Nicolas Geoffray | 0e7fa6b | 2016-01-13 15:28:58 +0000 | [diff] [blame] | 484 | // Also print on the error stream to test it through run-test. |
| 485 | std::string message("The String#value field is not present on Android versions >= 6.0"); |
| 486 | LOG(ERROR) << message; |
| 487 | std::cerr << message << std::endl; |
Nicolas Geoffray | 7ea4c09 | 2016-01-07 10:55:14 +0000 | [diff] [blame] | 488 | } |
Mathieu Chartier | ca239af | 2015-03-29 18:27:50 -0700 | [diff] [blame] | 489 | // We may have a pending exception if we failed to resolve. |
| 490 | if (!soa.Self()->IsExceptionPending()) { |
Nicolas Geoffray | 9d07414 | 2016-09-30 09:51:32 +0100 | [diff] [blame] | 491 | ThrowNoSuchFieldException(h_klass.Get(), name_str.c_str()); |
Mathieu Chartier | ca239af | 2015-03-29 18:27:50 -0700 | [diff] [blame] | 492 | } |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 493 | return nullptr; |
| 494 | } |
Nicolas Geoffray | 9d07414 | 2016-09-30 09:51:32 +0100 | [diff] [blame] | 495 | return soa.AddLocalReference<jobject>(result.Get()); |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 496 | } |
| 497 | |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 498 | static jobject Class_getDeclaredConstructorInternal( |
| 499 | JNIEnv* env, jobject javaThis, jobjectArray args) { |
| 500 | ScopedFastNativeObjectAccess soa(env); |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 501 | DCHECK_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), kRuntimePointerSize); |
Andreas Gampe | e01e364 | 2016-07-25 13:06:04 -0700 | [diff] [blame] | 502 | DCHECK(!Runtime::Current()->IsActiveTransaction()); |
Narayan Kamath | e453a8d | 2018-04-03 15:23:46 +0100 | [diff] [blame] | 503 | |
| 504 | StackHandleScope<1> hs(soa.Self()); |
| 505 | Handle<mirror::Constructor> result = hs.NewHandle( |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 506 | mirror::Class::GetDeclaredConstructorInternal<kRuntimePointerSize, false>( |
Andreas Gampe | 6039e56 | 2016-04-05 18:18:43 -0700 | [diff] [blame] | 507 | soa.Self(), |
Mathieu Chartier | 1a5337f | 2016-10-13 13:48:23 -0700 | [diff] [blame] | 508 | DecodeClass(soa, javaThis), |
Narayan Kamath | e453a8d | 2018-04-03 15:23:46 +0100 | [diff] [blame] | 509 | soa.Decode<mirror::ObjectArray<mirror::Class>>(args))); |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 510 | if (result == nullptr || ShouldBlockAccessToMember(result->GetArtMethod(), soa.Self())) { |
| 511 | return nullptr; |
| 512 | } |
Narayan Kamath | e453a8d | 2018-04-03 15:23:46 +0100 | [diff] [blame] | 513 | return soa.AddLocalReference<jobject>(result.Get()); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 514 | } |
| 515 | |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 516 | static ALWAYS_INLINE inline bool MethodMatchesConstructor( |
| 517 | ArtMethod* m, bool public_only, bool enforce_hidden_api) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 518 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 519 | DCHECK(m != nullptr); |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 520 | return m->IsConstructor() && |
| 521 | !m->IsStatic() && |
Mathew Inwood | 64ee8ae | 2018-04-09 12:24:55 +0100 | [diff] [blame^] | 522 | IsDiscoverable(public_only, enforce_hidden_api, m); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 523 | } |
| 524 | |
| 525 | static jobjectArray Class_getDeclaredConstructorsInternal( |
| 526 | JNIEnv* env, jobject javaThis, jboolean publicOnly) { |
| 527 | ScopedFastNativeObjectAccess soa(env); |
Mathieu Chartier | 05b7226 | 2015-06-17 16:11:12 -0700 | [diff] [blame] | 528 | StackHandleScope<2> hs(soa.Self()); |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 529 | bool public_only = (publicOnly != JNI_FALSE); |
| 530 | bool enforce_hidden_api = ShouldEnforceHiddenApi(soa.Self()); |
Mathieu Chartier | 05b7226 | 2015-06-17 16:11:12 -0700 | [diff] [blame] | 531 | Handle<mirror::Class> h_klass = hs.NewHandle(DecodeClass(soa, javaThis)); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 532 | size_t constructor_count = 0; |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 533 | // Two pass approach for speed. |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 534 | for (auto& m : h_klass->GetDirectMethods(kRuntimePointerSize)) { |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 535 | constructor_count += MethodMatchesConstructor(&m, public_only, enforce_hidden_api) ? 1u : 0u; |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 536 | } |
| 537 | auto h_constructors = hs.NewHandle(mirror::ObjectArray<mirror::Constructor>::Alloc( |
| 538 | soa.Self(), mirror::Constructor::ArrayClass(), constructor_count)); |
Andreas Gampe | fa4333d | 2017-02-14 11:10:34 -0800 | [diff] [blame] | 539 | if (UNLIKELY(h_constructors == nullptr)) { |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 540 | soa.Self()->AssertPendingException(); |
| 541 | return nullptr; |
| 542 | } |
| 543 | constructor_count = 0; |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 544 | for (auto& m : h_klass->GetDirectMethods(kRuntimePointerSize)) { |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 545 | if (MethodMatchesConstructor(&m, public_only, enforce_hidden_api)) { |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 546 | DCHECK_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), kRuntimePointerSize); |
Andreas Gampe | e01e364 | 2016-07-25 13:06:04 -0700 | [diff] [blame] | 547 | DCHECK(!Runtime::Current()->IsActiveTransaction()); |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 548 | auto* constructor = mirror::Constructor::CreateFromArtMethod<kRuntimePointerSize, false>( |
Andreas Gampe | e01e364 | 2016-07-25 13:06:04 -0700 | [diff] [blame] | 549 | soa.Self(), &m); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 550 | if (UNLIKELY(constructor == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 551 | soa.Self()->AssertPendingOOMException(); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 552 | return nullptr; |
| 553 | } |
| 554 | h_constructors->SetWithoutChecks<false>(constructor_count++, constructor); |
| 555 | } |
| 556 | } |
| 557 | return soa.AddLocalReference<jobjectArray>(h_constructors.Get()); |
| 558 | } |
| 559 | |
| 560 | static jobject Class_getDeclaredMethodInternal(JNIEnv* env, jobject javaThis, |
Igor Murashkin | 06537f7 | 2018-02-22 15:03:05 -0800 | [diff] [blame] | 561 | jstring name, jobjectArray args) { |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 562 | ScopedFastNativeObjectAccess soa(env); |
Narayan Kamath | e453a8d | 2018-04-03 15:23:46 +0100 | [diff] [blame] | 563 | StackHandleScope<1> hs(soa.Self()); |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 564 | DCHECK_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), kRuntimePointerSize); |
Andreas Gampe | e01e364 | 2016-07-25 13:06:04 -0700 | [diff] [blame] | 565 | DCHECK(!Runtime::Current()->IsActiveTransaction()); |
Narayan Kamath | e453a8d | 2018-04-03 15:23:46 +0100 | [diff] [blame] | 566 | Handle<mirror::Method> result = hs.NewHandle( |
Mathieu Chartier | 28bd2e4 | 2016-10-04 13:54:57 -0700 | [diff] [blame] | 567 | mirror::Class::GetDeclaredMethodInternal<kRuntimePointerSize, false>( |
| 568 | soa.Self(), |
| 569 | DecodeClass(soa, javaThis), |
| 570 | soa.Decode<mirror::String>(name), |
Narayan Kamath | e453a8d | 2018-04-03 15:23:46 +0100 | [diff] [blame] | 571 | soa.Decode<mirror::ObjectArray<mirror::Class>>(args))); |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 572 | if (result == nullptr || ShouldBlockAccessToMember(result->GetArtMethod(), soa.Self())) { |
| 573 | return nullptr; |
| 574 | } |
Narayan Kamath | e453a8d | 2018-04-03 15:23:46 +0100 | [diff] [blame] | 575 | return soa.AddLocalReference<jobject>(result.Get()); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 576 | } |
| 577 | |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 578 | static jobjectArray Class_getDeclaredMethodsUnchecked(JNIEnv* env, jobject javaThis, |
| 579 | jboolean publicOnly) { |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 580 | ScopedFastNativeObjectAccess soa(env); |
Mathieu Chartier | 281e500 | 2015-06-11 16:21:42 -0700 | [diff] [blame] | 581 | StackHandleScope<2> hs(soa.Self()); |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 582 | |
| 583 | bool enforce_hidden_api = ShouldEnforceHiddenApi(soa.Self()); |
| 584 | bool public_only = (publicOnly != JNI_FALSE); |
| 585 | |
Mathieu Chartier | 05b7226 | 2015-06-17 16:11:12 -0700 | [diff] [blame] | 586 | Handle<mirror::Class> klass = hs.NewHandle(DecodeClass(soa, javaThis)); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 587 | size_t num_methods = 0; |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 588 | for (ArtMethod& m : klass->GetDeclaredMethods(kRuntimePointerSize)) { |
| 589 | uint32_t modifiers = m.GetAccessFlags(); |
Alex Light | e64300b | 2015-12-15 15:02:47 -0800 | [diff] [blame] | 590 | // Add non-constructor declared methods. |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 591 | if ((modifiers & kAccConstructor) == 0 && |
Mathew Inwood | 64ee8ae | 2018-04-09 12:24:55 +0100 | [diff] [blame^] | 592 | IsDiscoverable(public_only, enforce_hidden_api, &m)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 593 | ++num_methods; |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 594 | } |
| 595 | } |
| 596 | auto ret = hs.NewHandle(mirror::ObjectArray<mirror::Method>::Alloc( |
| 597 | soa.Self(), mirror::Method::ArrayClass(), num_methods)); |
Andreas Gampe | fa4333d | 2017-02-14 11:10:34 -0800 | [diff] [blame] | 598 | if (ret == nullptr) { |
Vladimir Marko | a35510d | 2017-01-16 22:42:09 +0000 | [diff] [blame] | 599 | soa.Self()->AssertPendingOOMException(); |
| 600 | return nullptr; |
| 601 | } |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 602 | num_methods = 0; |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 603 | for (ArtMethod& m : klass->GetDeclaredMethods(kRuntimePointerSize)) { |
| 604 | uint32_t modifiers = m.GetAccessFlags(); |
| 605 | if ((modifiers & kAccConstructor) == 0 && |
Mathew Inwood | 64ee8ae | 2018-04-09 12:24:55 +0100 | [diff] [blame^] | 606 | IsDiscoverable(public_only, enforce_hidden_api, &m)) { |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 607 | DCHECK_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), kRuntimePointerSize); |
Andreas Gampe | e01e364 | 2016-07-25 13:06:04 -0700 | [diff] [blame] | 608 | DCHECK(!Runtime::Current()->IsActiveTransaction()); |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 609 | auto* method = |
| 610 | mirror::Method::CreateFromArtMethod<kRuntimePointerSize, false>(soa.Self(), &m); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 611 | if (method == nullptr) { |
| 612 | soa.Self()->AssertPendingException(); |
| 613 | return nullptr; |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 614 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 615 | ret->SetWithoutChecks<false>(num_methods++, method); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 616 | } |
| 617 | } |
| 618 | return soa.AddLocalReference<jobjectArray>(ret.Get()); |
| 619 | } |
| 620 | |
Igor Murashkin | df187e4 | 2016-02-01 11:43:26 -0800 | [diff] [blame] | 621 | static jobject Class_getDeclaredAnnotation(JNIEnv* env, jobject javaThis, jclass annotationClass) { |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 622 | ScopedFastNativeObjectAccess soa(env); |
| 623 | StackHandleScope<2> hs(soa.Self()); |
| 624 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
Igor Murashkin | df187e4 | 2016-02-01 11:43:26 -0800 | [diff] [blame] | 625 | |
| 626 | // Handle public contract to throw NPE if the "annotationClass" argument was null. |
| 627 | if (UNLIKELY(annotationClass == nullptr)) { |
| 628 | ThrowNullPointerException("annotationClass"); |
| 629 | return nullptr; |
| 630 | } |
| 631 | |
Nicolas Geoffray | 3a09092 | 2015-11-24 09:17:30 +0000 | [diff] [blame] | 632 | if (klass->IsProxyClass() || klass->GetDexCache() == nullptr) { |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 633 | return nullptr; |
| 634 | } |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 635 | Handle<mirror::Class> annotation_class(hs.NewHandle(soa.Decode<mirror::Class>(annotationClass))); |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 636 | return soa.AddLocalReference<jobject>( |
David Sehr | 9323e6e | 2016-09-13 08:58:35 -0700 | [diff] [blame] | 637 | annotations::GetAnnotationForClass(klass, annotation_class)); |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 638 | } |
| 639 | |
| 640 | static jobjectArray Class_getDeclaredAnnotations(JNIEnv* env, jobject javaThis) { |
| 641 | ScopedFastNativeObjectAccess soa(env); |
| 642 | StackHandleScope<1> hs(soa.Self()); |
| 643 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
Nicolas Geoffray | 3a09092 | 2015-11-24 09:17:30 +0000 | [diff] [blame] | 644 | if (klass->IsProxyClass() || klass->GetDexCache() == nullptr) { |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 645 | // Return an empty array instead of a null pointer. |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 646 | ObjPtr<mirror::Class> annotation_array_class = |
| 647 | soa.Decode<mirror::Class>(WellKnownClasses::java_lang_annotation_Annotation__array); |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 648 | mirror::ObjectArray<mirror::Object>* empty_array = |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 649 | mirror::ObjectArray<mirror::Object>::Alloc(soa.Self(), |
Mathieu Chartier | 1cc62e4 | 2016-10-03 18:01:28 -0700 | [diff] [blame] | 650 | annotation_array_class.Ptr(), |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 651 | 0); |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 652 | return soa.AddLocalReference<jobjectArray>(empty_array); |
| 653 | } |
David Sehr | 9323e6e | 2016-09-13 08:58:35 -0700 | [diff] [blame] | 654 | return soa.AddLocalReference<jobjectArray>(annotations::GetAnnotationsForClass(klass)); |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 655 | } |
| 656 | |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 657 | static jobjectArray Class_getDeclaredClasses(JNIEnv* env, jobject javaThis) { |
| 658 | ScopedFastNativeObjectAccess soa(env); |
| 659 | StackHandleScope<1> hs(soa.Self()); |
| 660 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
| 661 | mirror::ObjectArray<mirror::Class>* classes = nullptr; |
Nicolas Geoffray | 3a09092 | 2015-11-24 09:17:30 +0000 | [diff] [blame] | 662 | if (!klass->IsProxyClass() && klass->GetDexCache() != nullptr) { |
David Sehr | 9323e6e | 2016-09-13 08:58:35 -0700 | [diff] [blame] | 663 | classes = annotations::GetDeclaredClasses(klass); |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 664 | } |
| 665 | if (classes == nullptr) { |
| 666 | // Return an empty array instead of a null pointer. |
Mathieu Chartier | 6cfc2c0 | 2015-10-12 15:06:16 -0700 | [diff] [blame] | 667 | if (soa.Self()->IsExceptionPending()) { |
| 668 | // Pending exception from GetDeclaredClasses. |
| 669 | return nullptr; |
| 670 | } |
Narayan Kamath | 6b2dc31 | 2017-03-14 13:26:12 +0000 | [diff] [blame] | 671 | ObjPtr<mirror::Class> class_array_class = GetClassArrayClass(soa.Self()); |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 672 | if (class_array_class == nullptr) { |
| 673 | return nullptr; |
| 674 | } |
Mathieu Chartier | bc5a795 | 2016-10-17 15:46:31 -0700 | [diff] [blame] | 675 | ObjPtr<mirror::ObjectArray<mirror::Class>> empty_array = |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 676 | mirror::ObjectArray<mirror::Class>::Alloc(soa.Self(), class_array_class, 0); |
| 677 | return soa.AddLocalReference<jobjectArray>(empty_array); |
| 678 | } |
| 679 | return soa.AddLocalReference<jobjectArray>(classes); |
| 680 | } |
| 681 | |
| 682 | static jclass Class_getEnclosingClass(JNIEnv* env, jobject javaThis) { |
| 683 | ScopedFastNativeObjectAccess soa(env); |
| 684 | StackHandleScope<1> hs(soa.Self()); |
| 685 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
Nicolas Geoffray | 3a09092 | 2015-11-24 09:17:30 +0000 | [diff] [blame] | 686 | if (klass->IsProxyClass() || klass->GetDexCache() == nullptr) { |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 687 | return nullptr; |
| 688 | } |
David Sehr | 9323e6e | 2016-09-13 08:58:35 -0700 | [diff] [blame] | 689 | return soa.AddLocalReference<jclass>(annotations::GetEnclosingClass(klass)); |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | static jobject Class_getEnclosingConstructorNative(JNIEnv* env, jobject javaThis) { |
| 693 | ScopedFastNativeObjectAccess soa(env); |
| 694 | StackHandleScope<1> hs(soa.Self()); |
| 695 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
Nicolas Geoffray | 3a09092 | 2015-11-24 09:17:30 +0000 | [diff] [blame] | 696 | if (klass->IsProxyClass() || klass->GetDexCache() == nullptr) { |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 697 | return nullptr; |
| 698 | } |
Mathieu Chartier | bc5a795 | 2016-10-17 15:46:31 -0700 | [diff] [blame] | 699 | ObjPtr<mirror::Object> method = annotations::GetEnclosingMethod(klass); |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 700 | if (method != nullptr) { |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 701 | if (soa.Decode<mirror::Class>(WellKnownClasses::java_lang_reflect_Constructor) == |
| 702 | method->GetClass()) { |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 703 | return soa.AddLocalReference<jobject>(method); |
| 704 | } |
| 705 | } |
| 706 | return nullptr; |
| 707 | } |
| 708 | |
| 709 | static jobject Class_getEnclosingMethodNative(JNIEnv* env, jobject javaThis) { |
| 710 | ScopedFastNativeObjectAccess soa(env); |
| 711 | StackHandleScope<1> hs(soa.Self()); |
| 712 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
Nicolas Geoffray | 3a09092 | 2015-11-24 09:17:30 +0000 | [diff] [blame] | 713 | if (klass->IsProxyClass() || klass->GetDexCache() == nullptr) { |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 714 | return nullptr; |
| 715 | } |
Mathieu Chartier | bc5a795 | 2016-10-17 15:46:31 -0700 | [diff] [blame] | 716 | ObjPtr<mirror::Object> method = annotations::GetEnclosingMethod(klass); |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 717 | if (method != nullptr) { |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 718 | if (soa.Decode<mirror::Class>(WellKnownClasses::java_lang_reflect_Method) == |
| 719 | method->GetClass()) { |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 720 | return soa.AddLocalReference<jobject>(method); |
| 721 | } |
| 722 | } |
| 723 | return nullptr; |
| 724 | } |
| 725 | |
| 726 | static jint Class_getInnerClassFlags(JNIEnv* env, jobject javaThis, jint defaultValue) { |
| 727 | ScopedFastNativeObjectAccess soa(env); |
| 728 | StackHandleScope<1> hs(soa.Self()); |
| 729 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
Andreas Gampe | 715fdc2 | 2016-04-18 17:07:30 -0700 | [diff] [blame] | 730 | return mirror::Class::GetInnerClassFlags(klass, defaultValue); |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | static jstring Class_getInnerClassName(JNIEnv* env, jobject javaThis) { |
| 734 | ScopedFastNativeObjectAccess soa(env); |
| 735 | StackHandleScope<1> hs(soa.Self()); |
| 736 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
Nicolas Geoffray | 3a09092 | 2015-11-24 09:17:30 +0000 | [diff] [blame] | 737 | if (klass->IsProxyClass() || klass->GetDexCache() == nullptr) { |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 738 | return nullptr; |
| 739 | } |
| 740 | mirror::String* class_name = nullptr; |
David Sehr | 9323e6e | 2016-09-13 08:58:35 -0700 | [diff] [blame] | 741 | if (!annotations::GetInnerClass(klass, &class_name)) { |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 742 | return nullptr; |
| 743 | } |
| 744 | return soa.AddLocalReference<jstring>(class_name); |
| 745 | } |
| 746 | |
Jeff Hao | 1133db7 | 2016-04-04 19:50:14 -0700 | [diff] [blame] | 747 | static jobjectArray Class_getSignatureAnnotation(JNIEnv* env, jobject javaThis) { |
| 748 | ScopedFastNativeObjectAccess soa(env); |
| 749 | StackHandleScope<1> hs(soa.Self()); |
| 750 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
| 751 | if (klass->IsProxyClass() || klass->GetDexCache() == nullptr) { |
| 752 | return nullptr; |
| 753 | } |
| 754 | return soa.AddLocalReference<jobjectArray>( |
David Sehr | 9323e6e | 2016-09-13 08:58:35 -0700 | [diff] [blame] | 755 | annotations::GetSignatureAnnotationForClass(klass)); |
Jeff Hao | 1133db7 | 2016-04-04 19:50:14 -0700 | [diff] [blame] | 756 | } |
| 757 | |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 758 | static jboolean Class_isAnonymousClass(JNIEnv* env, jobject javaThis) { |
| 759 | ScopedFastNativeObjectAccess soa(env); |
| 760 | StackHandleScope<1> hs(soa.Self()); |
| 761 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
Nicolas Geoffray | 3a09092 | 2015-11-24 09:17:30 +0000 | [diff] [blame] | 762 | if (klass->IsProxyClass() || klass->GetDexCache() == nullptr) { |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 763 | return false; |
| 764 | } |
| 765 | mirror::String* class_name = nullptr; |
David Sehr | 9323e6e | 2016-09-13 08:58:35 -0700 | [diff] [blame] | 766 | if (!annotations::GetInnerClass(klass, &class_name)) { |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 767 | return false; |
| 768 | } |
| 769 | return class_name == nullptr; |
| 770 | } |
| 771 | |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 772 | static jboolean Class_isDeclaredAnnotationPresent(JNIEnv* env, jobject javaThis, |
| 773 | jclass annotationType) { |
| 774 | ScopedFastNativeObjectAccess soa(env); |
| 775 | StackHandleScope<2> hs(soa.Self()); |
| 776 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
Nicolas Geoffray | 3a09092 | 2015-11-24 09:17:30 +0000 | [diff] [blame] | 777 | if (klass->IsProxyClass() || klass->GetDexCache() == nullptr) { |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 778 | return false; |
| 779 | } |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 780 | Handle<mirror::Class> annotation_class(hs.NewHandle(soa.Decode<mirror::Class>(annotationType))); |
David Sehr | 9323e6e | 2016-09-13 08:58:35 -0700 | [diff] [blame] | 781 | return annotations::IsClassAnnotationPresent(klass, annotation_class); |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 782 | } |
| 783 | |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 784 | static jclass Class_getDeclaringClass(JNIEnv* env, jobject javaThis) { |
| 785 | ScopedFastNativeObjectAccess soa(env); |
| 786 | StackHandleScope<1> hs(soa.Self()); |
| 787 | Handle<mirror::Class> klass(hs.NewHandle(DecodeClass(soa, javaThis))); |
Nicolas Geoffray | 3a09092 | 2015-11-24 09:17:30 +0000 | [diff] [blame] | 788 | if (klass->IsProxyClass() || klass->GetDexCache() == nullptr) { |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 789 | return nullptr; |
| 790 | } |
| 791 | // Return null for anonymous classes. |
| 792 | if (Class_isAnonymousClass(env, javaThis)) { |
| 793 | return nullptr; |
| 794 | } |
David Sehr | 9323e6e | 2016-09-13 08:58:35 -0700 | [diff] [blame] | 795 | return soa.AddLocalReference<jclass>(annotations::GetDeclaringClass(klass)); |
Jeff Hao | 2a5892f | 2015-08-31 15:00:40 -0700 | [diff] [blame] | 796 | } |
| 797 | |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 798 | static jobject Class_newInstance(JNIEnv* env, jobject javaThis) { |
| 799 | ScopedFastNativeObjectAccess soa(env); |
| 800 | StackHandleScope<4> hs(soa.Self()); |
Mathieu Chartier | 05b7226 | 2015-06-17 16:11:12 -0700 | [diff] [blame] | 801 | Handle<mirror::Class> klass = hs.NewHandle(DecodeClass(soa, javaThis)); |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 802 | if (UNLIKELY(klass->GetPrimitiveType() != 0 || klass->IsInterface() || klass->IsArrayClass() || |
| 803 | klass->IsAbstract())) { |
| 804 | soa.Self()->ThrowNewExceptionF("Ljava/lang/InstantiationException;", |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 805 | "%s cannot be instantiated", |
| 806 | klass->PrettyClass().c_str()); |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 807 | return nullptr; |
| 808 | } |
| 809 | auto caller = hs.NewHandle<mirror::Class>(nullptr); |
| 810 | // Verify that we can access the class. |
| 811 | if (!klass->IsPublic()) { |
| 812 | caller.Assign(GetCallingClass(soa.Self(), 1)); |
Andreas Gampe | fa4333d | 2017-02-14 11:10:34 -0800 | [diff] [blame] | 813 | if (caller != nullptr && !caller->CanAccess(klass.Get())) { |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 814 | soa.Self()->ThrowNewExceptionF( |
| 815 | "Ljava/lang/IllegalAccessException;", "%s is not accessible from %s", |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 816 | klass->PrettyClass().c_str(), caller->PrettyClass().c_str()); |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 817 | return nullptr; |
| 818 | } |
| 819 | } |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 820 | ArtMethod* constructor = klass->GetDeclaredConstructor( |
Mathieu Chartier | 9865bde | 2015-12-21 09:58:16 -0800 | [diff] [blame] | 821 | soa.Self(), |
Andreas Gampe | 6039e56 | 2016-04-05 18:18:43 -0700 | [diff] [blame] | 822 | ScopedNullHandle<mirror::ObjectArray<mirror::Class>>(), |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 823 | kRuntimePointerSize); |
David Brazdil | 5a61bb7 | 2018-01-19 16:59:46 +0000 | [diff] [blame] | 824 | if (UNLIKELY(constructor == nullptr) || ShouldBlockAccessToMember(constructor, soa.Self())) { |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 825 | soa.Self()->ThrowNewExceptionF("Ljava/lang/InstantiationException;", |
| 826 | "%s has no zero argument constructor", |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 827 | klass->PrettyClass().c_str()); |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 828 | return nullptr; |
| 829 | } |
Jeff Hao | 69bdcb2 | 2015-04-27 20:54:07 -0700 | [diff] [blame] | 830 | // Invoke the string allocator to return an empty string for the string class. |
| 831 | if (klass->IsStringClass()) { |
| 832 | gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator(); |
Mathieu Chartier | bc5a795 | 2016-10-17 15:46:31 -0700 | [diff] [blame] | 833 | ObjPtr<mirror::Object> obj = mirror::String::AllocEmptyString<true>(soa.Self(), allocator_type); |
Jeff Hao | 69bdcb2 | 2015-04-27 20:54:07 -0700 | [diff] [blame] | 834 | if (UNLIKELY(soa.Self()->IsExceptionPending())) { |
| 835 | return nullptr; |
| 836 | } else { |
| 837 | return soa.AddLocalReference<jobject>(obj); |
| 838 | } |
| 839 | } |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 840 | auto receiver = hs.NewHandle(klass->AllocObject(soa.Self())); |
Andreas Gampe | fa4333d | 2017-02-14 11:10:34 -0800 | [diff] [blame] | 841 | if (UNLIKELY(receiver == nullptr)) { |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 842 | soa.Self()->AssertPendingOOMException(); |
| 843 | return nullptr; |
| 844 | } |
| 845 | // Verify that we can access the constructor. |
| 846 | auto* declaring_class = constructor->GetDeclaringClass(); |
| 847 | if (!constructor->IsPublic()) { |
Andreas Gampe | fa4333d | 2017-02-14 11:10:34 -0800 | [diff] [blame] | 848 | if (caller == nullptr) { |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 849 | caller.Assign(GetCallingClass(soa.Self(), 1)); |
| 850 | } |
Andreas Gampe | fa4333d | 2017-02-14 11:10:34 -0800 | [diff] [blame] | 851 | if (UNLIKELY(caller != nullptr && !VerifyAccess(receiver.Get(), |
Mathieu Chartier | f8ac97f | 2016-10-05 15:56:52 -0700 | [diff] [blame] | 852 | declaring_class, |
| 853 | constructor->GetAccessFlags(), |
| 854 | caller.Get()))) { |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 855 | soa.Self()->ThrowNewExceptionF( |
| 856 | "Ljava/lang/IllegalAccessException;", "%s is not accessible from %s", |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 857 | constructor->PrettyMethod().c_str(), caller->PrettyClass().c_str()); |
Mathieu Chartier | f36cb5f | 2015-04-24 16:55:16 -0700 | [diff] [blame] | 858 | return nullptr; |
| 859 | } |
| 860 | } |
| 861 | // Ensure that we are initialized. |
| 862 | if (UNLIKELY(!declaring_class->IsInitialized())) { |
| 863 | if (!Runtime::Current()->GetClassLinker()->EnsureInitialized( |
| 864 | soa.Self(), hs.NewHandle(declaring_class), true, true)) { |
| 865 | soa.Self()->AssertPendingException(); |
| 866 | return nullptr; |
| 867 | } |
| 868 | } |
| 869 | // Invoke the constructor. |
| 870 | JValue result; |
| 871 | uint32_t args[1] = { static_cast<uint32_t>(reinterpret_cast<uintptr_t>(receiver.Get())) }; |
| 872 | constructor->Invoke(soa.Self(), args, sizeof(args), &result, "V"); |
| 873 | if (UNLIKELY(soa.Self()->IsExceptionPending())) { |
| 874 | return nullptr; |
| 875 | } |
| 876 | // Constructors are ()V methods, so we shouldn't touch the result of InvokeMethod. |
| 877 | return soa.AddLocalReference<jobject>(receiver.Get()); |
| 878 | } |
| 879 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 880 | static JNINativeMethod gMethods[] = { |
Igor Murashkin | 3b6f440 | 2017-02-16 16:13:17 -0800 | [diff] [blame] | 881 | FAST_NATIVE_METHOD(Class, classForName, |
| 882 | "(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;"), |
| 883 | FAST_NATIVE_METHOD(Class, getDeclaredAnnotation, |
| 884 | "(Ljava/lang/Class;)Ljava/lang/annotation/Annotation;"), |
| 885 | FAST_NATIVE_METHOD(Class, getDeclaredAnnotations, "()[Ljava/lang/annotation/Annotation;"), |
| 886 | FAST_NATIVE_METHOD(Class, getDeclaredClasses, "()[Ljava/lang/Class;"), |
| 887 | FAST_NATIVE_METHOD(Class, getDeclaredConstructorInternal, |
| 888 | "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;"), |
| 889 | FAST_NATIVE_METHOD(Class, getDeclaredConstructorsInternal, "(Z)[Ljava/lang/reflect/Constructor;"), |
| 890 | FAST_NATIVE_METHOD(Class, getDeclaredField, "(Ljava/lang/String;)Ljava/lang/reflect/Field;"), |
| 891 | FAST_NATIVE_METHOD(Class, getPublicFieldRecursive, "(Ljava/lang/String;)Ljava/lang/reflect/Field;"), |
| 892 | FAST_NATIVE_METHOD(Class, getDeclaredFields, "()[Ljava/lang/reflect/Field;"), |
| 893 | FAST_NATIVE_METHOD(Class, getDeclaredFieldsUnchecked, "(Z)[Ljava/lang/reflect/Field;"), |
| 894 | FAST_NATIVE_METHOD(Class, getDeclaredMethodInternal, |
| 895 | "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;"), |
| 896 | FAST_NATIVE_METHOD(Class, getDeclaredMethodsUnchecked, |
| 897 | "(Z)[Ljava/lang/reflect/Method;"), |
| 898 | FAST_NATIVE_METHOD(Class, getDeclaringClass, "()Ljava/lang/Class;"), |
| 899 | FAST_NATIVE_METHOD(Class, getEnclosingClass, "()Ljava/lang/Class;"), |
| 900 | FAST_NATIVE_METHOD(Class, getEnclosingConstructorNative, "()Ljava/lang/reflect/Constructor;"), |
| 901 | FAST_NATIVE_METHOD(Class, getEnclosingMethodNative, "()Ljava/lang/reflect/Method;"), |
| 902 | FAST_NATIVE_METHOD(Class, getInnerClassFlags, "(I)I"), |
| 903 | FAST_NATIVE_METHOD(Class, getInnerClassName, "()Ljava/lang/String;"), |
Narayan Kamath | 6b2dc31 | 2017-03-14 13:26:12 +0000 | [diff] [blame] | 904 | FAST_NATIVE_METHOD(Class, getInterfacesInternal, "()[Ljava/lang/Class;"), |
Vladimir Marko | 7287c4d | 2018-02-15 10:41:07 +0000 | [diff] [blame] | 905 | FAST_NATIVE_METHOD(Class, getPrimitiveClass, "(Ljava/lang/String;)Ljava/lang/Class;"), |
Igor Murashkin | 3b6f440 | 2017-02-16 16:13:17 -0800 | [diff] [blame] | 906 | FAST_NATIVE_METHOD(Class, getNameNative, "()Ljava/lang/String;"), |
Igor Murashkin | 3b6f440 | 2017-02-16 16:13:17 -0800 | [diff] [blame] | 907 | FAST_NATIVE_METHOD(Class, getPublicDeclaredFields, "()[Ljava/lang/reflect/Field;"), |
| 908 | FAST_NATIVE_METHOD(Class, getSignatureAnnotation, "()[Ljava/lang/String;"), |
| 909 | FAST_NATIVE_METHOD(Class, isAnonymousClass, "()Z"), |
| 910 | FAST_NATIVE_METHOD(Class, isDeclaredAnnotationPresent, "(Ljava/lang/Class;)Z"), |
| 911 | FAST_NATIVE_METHOD(Class, newInstance, "()Ljava/lang/Object;"), |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 912 | }; |
| 913 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 914 | void register_java_lang_Class(JNIEnv* env) { |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 915 | REGISTER_NATIVE_METHODS("java/lang/Class"); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 916 | } |
| 917 | |
| 918 | } // namespace art |