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 "art_field-inl.h"
21 #include "base/enums.h"
22 #include "common_runtime_test.h"
23 #include "mirror/field-inl.h"
24 #include "proxy_test.h"
25 #include "scoped_thread_state_change-inl.h"
26 #include "well_known_classes.h"
27 
28 namespace art {
29 namespace proxy_test {
30 
31 class ProxyTest : public CommonRuntimeTest {
32  protected:
SetUp()33   void SetUp() override {
34     CommonRuntimeTest::SetUp();
35     // The creation of a Proxy class uses WellKnownClasses. These are not normally initialized by
36     // CommonRuntimeTest so we need to do that now.
37     WellKnownClasses::Clear();
38     WellKnownClasses::Init(art::Thread::Current()->GetJniEnv());
39     // Since we aren't actually calling any of the native functions we can just immediately call
40     // LateInit after calling Init.
41     WellKnownClasses::LateInit(art::Thread::Current()->GetJniEnv());
42   }
43 };
44 
45 // Creates a proxy class and check ClassHelper works correctly.
TEST_F(ProxyTest,ProxyClassHelper)46 TEST_F(ProxyTest, ProxyClassHelper) {
47   ScopedObjectAccess soa(Thread::Current());
48   jobject jclass_loader = LoadDex("Interfaces");
49   StackHandleScope<4> hs(soa.Self());
50   Handle<mirror::ClassLoader> class_loader(
51       hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
52 
53   Handle<mirror::Class> I(hs.NewHandle(
54       class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
55   Handle<mirror::Class> J(hs.NewHandle(
56       class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
57   ASSERT_TRUE(I != nullptr);
58   ASSERT_TRUE(J != nullptr);
59 
60   std::vector<Handle<mirror::Class>> interfaces;
61   interfaces.push_back(I);
62   interfaces.push_back(J);
63   Handle<mirror::Class> proxy_class(hs.NewHandle(
64       GenerateProxyClass(soa, jclass_loader, class_linker_, "$Proxy1234", interfaces)));
65   interfaces.clear();  // Don't least possibly stale objects in the array as good practice.
66   ASSERT_TRUE(proxy_class != nullptr);
67   ASSERT_TRUE(proxy_class->IsProxyClass());
68   ASSERT_TRUE(proxy_class->IsInitialized());
69 
70   EXPECT_EQ(2U, proxy_class->NumDirectInterfaces());  // Interfaces$I and Interfaces$J.
71   EXPECT_OBJ_PTR_EQ(I.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class.Get(), 0));
72   EXPECT_OBJ_PTR_EQ(J.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class.Get(), 1));
73   std::string temp;
74   const char* proxy_class_descriptor = proxy_class->GetDescriptor(&temp);
75   EXPECT_STREQ("L$Proxy1234;", proxy_class_descriptor);
76   EXPECT_EQ(nullptr, proxy_class->GetSourceFile());
77 }
78 
79 // Creates a proxy class and check FieldHelper works correctly.
TEST_F(ProxyTest,ProxyFieldHelper)80 TEST_F(ProxyTest, ProxyFieldHelper) {
81   ScopedObjectAccess soa(Thread::Current());
82   jobject jclass_loader = LoadDex("Interfaces");
83   StackHandleScope<9> hs(soa.Self());
84   Handle<mirror::ClassLoader> class_loader(
85       hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
86 
87   Handle<mirror::Class> I(hs.NewHandle(
88       class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
89   Handle<mirror::Class> J(hs.NewHandle(
90       class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
91   ASSERT_TRUE(I != nullptr);
92   ASSERT_TRUE(J != nullptr);
93 
94   Handle<mirror::Class> proxyClass;
95   {
96     std::vector<Handle<mirror::Class>> interfaces;
97     interfaces.push_back(I);
98     interfaces.push_back(J);
99     proxyClass = hs.NewHandle(
100         GenerateProxyClass(soa, jclass_loader, class_linker_, "$Proxy1234", interfaces));
101   }
102 
103   ASSERT_TRUE(proxyClass != nullptr);
104   ASSERT_TRUE(proxyClass->IsProxyClass());
105   ASSERT_TRUE(proxyClass->IsInitialized());
106 
107   EXPECT_TRUE(proxyClass->GetIFieldsPtr() == nullptr);
108 
109   LengthPrefixedArray<ArtField>* static_fields = proxyClass->GetSFieldsPtr();
110   ASSERT_TRUE(static_fields != nullptr);
111   ASSERT_EQ(2u, proxyClass->NumStaticFields());
112 
113   Handle<mirror::Class> interfacesFieldClass(
114       hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Class;")));
115   ASSERT_TRUE(interfacesFieldClass != nullptr);
116   Handle<mirror::Class> throwsFieldClass(
117       hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Class;")));
118   ASSERT_TRUE(throwsFieldClass != nullptr);
119 
120   // Test "Class[] interfaces" field.
121   ArtField* field = &static_fields->At(0);
122   EXPECT_STREQ("interfaces", field->GetName());
123   EXPECT_STREQ("[Ljava/lang/Class;", field->GetTypeDescriptor());
124   EXPECT_OBJ_PTR_EQ(interfacesFieldClass.Get(), field->ResolveType());
125   std::string temp;
126   EXPECT_STREQ("L$Proxy1234;", field->GetDeclaringClass()->GetDescriptor(&temp));
127   EXPECT_FALSE(field->IsPrimitiveType());
128 
129   // Test "Class[][] throws" field.
130   field = &static_fields->At(1);
131   EXPECT_STREQ("throws", field->GetName());
132   EXPECT_STREQ("[[Ljava/lang/Class;", field->GetTypeDescriptor());
133   EXPECT_OBJ_PTR_EQ(throwsFieldClass.Get(), field->ResolveType());
134   EXPECT_STREQ("L$Proxy1234;", field->GetDeclaringClass()->GetDescriptor(&temp));
135   EXPECT_FALSE(field->IsPrimitiveType());
136 }
137 
138 // Creates two proxy classes and check the art/mirror fields of their static fields.
TEST_F(ProxyTest,CheckArtMirrorFieldsOfProxyStaticFields)139 TEST_F(ProxyTest, CheckArtMirrorFieldsOfProxyStaticFields) {
140   ScopedObjectAccess soa(Thread::Current());
141   jobject jclass_loader = LoadDex("Interfaces");
142   StackHandleScope<7> hs(soa.Self());
143 
144   Handle<mirror::Class> proxyClass0;
145   Handle<mirror::Class> proxyClass1;
146   {
147     std::vector<Handle<mirror::Class>> interfaces;
148     proxyClass0 = hs.NewHandle(
149         GenerateProxyClass(soa, jclass_loader, class_linker_, "$Proxy0", interfaces));
150     proxyClass1 = hs.NewHandle(
151         GenerateProxyClass(soa, jclass_loader, class_linker_, "$Proxy1", interfaces));
152   }
153 
154   ASSERT_TRUE(proxyClass0 != nullptr);
155   ASSERT_TRUE(proxyClass0->IsProxyClass());
156   ASSERT_TRUE(proxyClass0->IsInitialized());
157   ASSERT_TRUE(proxyClass1 != nullptr);
158   ASSERT_TRUE(proxyClass1->IsProxyClass());
159   ASSERT_TRUE(proxyClass1->IsInitialized());
160 
161   LengthPrefixedArray<ArtField>* static_fields0 = proxyClass0->GetSFieldsPtr();
162   ASSERT_TRUE(static_fields0 != nullptr);
163   ASSERT_EQ(2u, static_fields0->size());
164   LengthPrefixedArray<ArtField>* static_fields1 = proxyClass1->GetSFieldsPtr();
165   ASSERT_TRUE(static_fields1 != nullptr);
166   ASSERT_EQ(2u, static_fields1->size());
167 
168   EXPECT_OBJ_PTR_EQ(static_fields0->At(0).GetDeclaringClass(), proxyClass0.Get());
169   EXPECT_OBJ_PTR_EQ(static_fields0->At(1).GetDeclaringClass(), proxyClass0.Get());
170   EXPECT_OBJ_PTR_EQ(static_fields1->At(0).GetDeclaringClass(), proxyClass1.Get());
171   EXPECT_OBJ_PTR_EQ(static_fields1->At(1).GetDeclaringClass(), proxyClass1.Get());
172 
173   ASSERT_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), kRuntimePointerSize);
174   ASSERT_FALSE(Runtime::Current()->IsActiveTransaction());
175   Handle<mirror::Field> field00 =
176       hs.NewHandle(mirror::Field::CreateFromArtField<kRuntimePointerSize, false>(
177           soa.Self(), &static_fields0->At(0), true));
178   Handle<mirror::Field> field01 =
179       hs.NewHandle(mirror::Field::CreateFromArtField<kRuntimePointerSize, false>(
180           soa.Self(), &static_fields0->At(1), true));
181   Handle<mirror::Field> field10 =
182       hs.NewHandle(mirror::Field::CreateFromArtField<kRuntimePointerSize, false>(
183           soa.Self(), &static_fields1->At(0), true));
184   Handle<mirror::Field> field11 =
185       hs.NewHandle(mirror::Field::CreateFromArtField<kRuntimePointerSize, false>(
186           soa.Self(), &static_fields1->At(1), true));
187   EXPECT_EQ(field00->GetArtField(), &static_fields0->At(0));
188   EXPECT_EQ(field01->GetArtField(), &static_fields0->At(1));
189   EXPECT_EQ(field10->GetArtField(), &static_fields1->At(0));
190   EXPECT_EQ(field11->GetArtField(), &static_fields1->At(1));
191 }
192 
193 }  // namespace proxy_test
194 }  // namespace art
195