1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <jni.h> 18 #include <vector> 19 20 #include "common_compiler_test.h" 21 #include "field_helper.h" 22 #include "mirror/art_field-inl.h" 23 #include "scoped_thread_state_change.h" 24 25 namespace art { 26 27 class ProxyTest : public CommonCompilerTest { 28 public: 29 // Generate a proxy class with the given name and interfaces. This is a simplification from what 30 // libcore does to fit to our test needs. We do not check for duplicated interfaces or methods and 31 // we do not declare exceptions. 32 mirror::Class* GenerateProxyClass(ScopedObjectAccess& soa, jobject jclass_loader, 33 const char* className, 34 const std::vector<mirror::Class*>& interfaces) 35 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 36 mirror::Class* javaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;"); 37 CHECK(javaLangObject != nullptr); 38 39 jclass javaLangClass = soa.AddLocalReference<jclass>(mirror::Class::GetJavaLangClass()); 40 41 // Builds the interfaces array. 42 jobjectArray proxyClassInterfaces = soa.Env()->NewObjectArray(interfaces.size(), javaLangClass, 43 nullptr); 44 soa.Self()->AssertNoPendingException(); 45 for (size_t i = 0; i < interfaces.size(); ++i) { 46 soa.Env()->SetObjectArrayElement(proxyClassInterfaces, i, 47 soa.AddLocalReference<jclass>(interfaces[i])); 48 } 49 50 // Builds the method array. 51 jsize methods_count = 3; // Object.equals, Object.hashCode and Object.toString. 52 for (mirror::Class* interface : interfaces) { 53 mirror::ObjectArray<mirror::ArtMethod>* virtual_methods = interface->GetVirtualMethods(); 54 methods_count += (virtual_methods == nullptr) ? 0 : virtual_methods->GetLength(); 55 } 56 jclass javaLangReflectArtMethod = 57 soa.AddLocalReference<jclass>(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 58 jobjectArray proxyClassMethods = soa.Env()->NewObjectArray(methods_count, 59 javaLangReflectArtMethod, nullptr); 60 soa.Self()->AssertNoPendingException(); 61 62 // Fill the method array 63 mirror::ArtMethod* equalsMethod = javaLangObject->FindDeclaredVirtualMethod("equals", 64 "(Ljava/lang/Object;)Z"); 65 mirror::ArtMethod* hashCodeMethod = javaLangObject->FindDeclaredVirtualMethod("hashCode", 66 "()I"); 67 mirror::ArtMethod* toStringMethod = javaLangObject->FindDeclaredVirtualMethod("toString", 68 "()Ljava/lang/String;"); 69 CHECK(equalsMethod != nullptr); 70 CHECK(hashCodeMethod != nullptr); 71 CHECK(toStringMethod != nullptr); 72 73 jsize array_index = 0; 74 // Adds Object methods. 75 soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++, 76 soa.AddLocalReference<jobject>(equalsMethod)); 77 soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++, 78 soa.AddLocalReference<jobject>(hashCodeMethod)); 79 soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++, 80 soa.AddLocalReference<jobject>(toStringMethod)); 81 82 // Now adds all interfaces virtual methods. 83 for (mirror::Class* interface : interfaces) { 84 mirror::ObjectArray<mirror::ArtMethod>* virtual_methods = interface->GetVirtualMethods(); 85 if (virtual_methods != nullptr) { 86 for (int32_t mth_index = 0; mth_index < virtual_methods->GetLength(); ++mth_index) { 87 mirror::ArtMethod* method = virtual_methods->Get(mth_index); 88 soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++, 89 soa.AddLocalReference<jobject>(method)); 90 } 91 } 92 } 93 CHECK_EQ(array_index, methods_count); 94 95 // Builds an empty exception array. 96 jobjectArray proxyClassThrows = soa.Env()->NewObjectArray(0, javaLangClass, nullptr); 97 soa.Self()->AssertNoPendingException(); 98 99 mirror::Class* proxyClass = class_linker_->CreateProxyClass(soa, 100 soa.Env()->NewStringUTF(className), 101 proxyClassInterfaces, jclass_loader, 102 proxyClassMethods, proxyClassThrows); 103 soa.Self()->AssertNoPendingException(); 104 return proxyClass; 105 } 106 }; 107 108 // Creates a proxy class and check ClassHelper works correctly. 109 TEST_F(ProxyTest, ProxyClassHelper) { 110 ScopedObjectAccess soa(Thread::Current()); 111 jobject jclass_loader = LoadDex("Interfaces"); 112 StackHandleScope<4> hs(soa.Self()); 113 Handle<mirror::ClassLoader> class_loader( 114 hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader))); 115 116 Handle<mirror::Class> I(hs.NewHandle( 117 class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader))); 118 Handle<mirror::Class> J(hs.NewHandle( 119 class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader))); 120 ASSERT_TRUE(I.Get() != nullptr); 121 ASSERT_TRUE(J.Get() != nullptr); 122 123 std::vector<mirror::Class*> interfaces; 124 interfaces.push_back(I.Get()); 125 interfaces.push_back(J.Get()); 126 Handle<mirror::Class> proxy_class(hs.NewHandle( 127 GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces))); 128 interfaces.clear(); // Don't least possibly stale objects in the array as good practice. 129 ASSERT_TRUE(proxy_class.Get() != nullptr); 130 ASSERT_TRUE(proxy_class->IsProxyClass()); 131 ASSERT_TRUE(proxy_class->IsInitialized()); 132 133 EXPECT_EQ(2U, proxy_class->NumDirectInterfaces()); // Interfaces$I and Interfaces$J. 134 EXPECT_EQ(I.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 0)); 135 EXPECT_EQ(J.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 1)); 136 std::string temp; 137 const char* proxy_class_descriptor = proxy_class->GetDescriptor(&temp); 138 EXPECT_STREQ("L$Proxy1234;", proxy_class_descriptor); 139 EXPECT_EQ(nullptr, proxy_class->GetSourceFile()); 140 } 141 142 // Creates a proxy class and check FieldHelper works correctly. 143 TEST_F(ProxyTest, ProxyFieldHelper) { 144 ScopedObjectAccess soa(Thread::Current()); 145 jobject jclass_loader = LoadDex("Interfaces"); 146 StackHandleScope<9> hs(soa.Self()); 147 Handle<mirror::ClassLoader> class_loader( 148 hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader))); 149 150 Handle<mirror::Class> I(hs.NewHandle( 151 class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader))); 152 Handle<mirror::Class> J(hs.NewHandle( 153 class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader))); 154 ASSERT_TRUE(I.Get() != nullptr); 155 ASSERT_TRUE(J.Get() != nullptr); 156 157 Handle<mirror::Class> proxyClass; 158 { 159 std::vector<mirror::Class*> interfaces; 160 interfaces.push_back(I.Get()); 161 interfaces.push_back(J.Get()); 162 proxyClass = hs.NewHandle(GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces)); 163 } 164 165 ASSERT_TRUE(proxyClass.Get() != nullptr); 166 ASSERT_TRUE(proxyClass->IsProxyClass()); 167 ASSERT_TRUE(proxyClass->IsInitialized()); 168 169 Handle<mirror::ObjectArray<mirror::ArtField>> instance_fields( 170 hs.NewHandle(proxyClass->GetIFields())); 171 EXPECT_TRUE(instance_fields.Get() == nullptr); 172 173 Handle<mirror::ObjectArray<mirror::ArtField>> static_fields( 174 hs.NewHandle(proxyClass->GetSFields())); 175 ASSERT_TRUE(static_fields.Get() != nullptr); 176 ASSERT_EQ(2, static_fields->GetLength()); 177 178 Handle<mirror::Class> interfacesFieldClass( 179 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Class;"))); 180 ASSERT_TRUE(interfacesFieldClass.Get() != nullptr); 181 Handle<mirror::Class> throwsFieldClass( 182 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Class;"))); 183 ASSERT_TRUE(throwsFieldClass.Get() != nullptr); 184 185 // Test "Class[] interfaces" field. 186 FieldHelper fh(hs.NewHandle(static_fields->Get(0))); 187 EXPECT_EQ("interfaces", std::string(fh.GetField()->GetName())); 188 EXPECT_EQ("[Ljava/lang/Class;", std::string(fh.GetField()->GetTypeDescriptor())); 189 EXPECT_EQ(interfacesFieldClass.Get(), fh.GetType()); 190 EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor())); 191 EXPECT_FALSE(fh.GetField()->IsPrimitiveType()); 192 193 // Test "Class[][] throws" field. 194 fh.ChangeField(static_fields->Get(1)); 195 EXPECT_EQ("throws", std::string(fh.GetField()->GetName())); 196 EXPECT_EQ("[[Ljava/lang/Class;", std::string(fh.GetField()->GetTypeDescriptor())); 197 EXPECT_EQ(throwsFieldClass.Get(), fh.GetType()); 198 EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor())); 199 EXPECT_FALSE(fh.GetField()->IsPrimitiveType()); 200 } 201 202 } // namespace art 203
