1 /*
2 * Copyright (C) 2021 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 #if defined(ART_TARGET_ANDROID)
18
19 #include <gtest/gtest.h>
20
21 #include "native_loader_test.h"
22 #include "nativehelper/scoped_utf_chars.h"
23 #include "nativeloader/native_loader.h"
24
25 namespace android {
26 namespace nativeloader {
27
28 using ::testing::StrEq;
29
30 // Only need to test that the trivial lazy lib wrappers call through to the real
31 // functions, but still have to mock things well enough to avoid null pointer
32 // dereferences.
33
34 class NativeLoaderLazyTest : public ::testing::Test {
35 protected:
SetUp()36 void SetUp() override {
37 mock = std::make_unique<testing::NiceMock<MockPlatform>>(false);
38 env = std::make_unique<JNIEnv>();
39 env->functions = CreateJNINativeInterface();
40 }
41
TearDown()42 void TearDown() override {
43 // ResetNativeLoader isn't accessible through the lazy library, so we cannot
44 // reset libnativeloader internal state. Hence be sure to not reuse the same
45 // class loader/namespace names.
46 delete env->functions;
47 mock.reset();
48 }
49
CallCreateClassLoaderNamespace(const char * class_loader)50 void CallCreateClassLoaderNamespace(const char* class_loader) {
51 ON_CALL(*mock, JniObject_getParent(StrEq(class_loader))).WillByDefault(Return(nullptr));
52 EXPECT_CALL(*mock, mock_create_namespace)
53 .WillOnce(Return(TO_MOCK_NAMESPACE(TO_ANDROID_NAMESPACE(class_loader))));
54 ON_CALL(*mock, mock_link_namespaces).WillByDefault(Return(true));
55
56 jstring err = CreateClassLoaderNamespace(env.get(),
57 17,
58 env.get()->NewStringUTF(class_loader),
59 false,
60 env.get()->NewStringUTF("/data/app/foo/classes.dex"),
61 env.get()->NewStringUTF("/data/app/foo"),
62 /*permitted_path=*/nullptr,
63 /*uses_library_list=*/nullptr);
64 EXPECT_EQ(err, nullptr) << "Error is: " << std::string(ScopedUtfChars(env.get(), err).c_str());
65 }
66
67 std::unique_ptr<JNIEnv> env;
68 };
69
TEST_F(NativeLoaderLazyTest,CreateClassLoaderNamespace)70 TEST_F(NativeLoaderLazyTest, CreateClassLoaderNamespace) {
71 CallCreateClassLoaderNamespace("my_classloader_1");
72 }
73
TEST_F(NativeLoaderLazyTest,OpenNativeLibrary)74 TEST_F(NativeLoaderLazyTest, OpenNativeLibrary) {
75 bool needs_native_bridge;
76 char* errmsg = nullptr;
77 EXPECT_EQ(nullptr,
78 OpenNativeLibrary(env.get(),
79 17,
80 "libnotfound.so",
81 env.get()->NewStringUTF("my_classloader"),
82 /*caller_location=*/nullptr,
83 /*library_path=*/nullptr,
84 &needs_native_bridge,
85 &errmsg));
86 EXPECT_NE(nullptr, errmsg);
87 NativeLoaderFreeErrorMessage(errmsg);
88 }
89
TEST_F(NativeLoaderLazyTest,CloseNativeLibrary)90 TEST_F(NativeLoaderLazyTest, CloseNativeLibrary) {
91 char* errmsg = nullptr;
92 EXPECT_FALSE(CloseNativeLibrary(nullptr, false, &errmsg));
93 EXPECT_NE(nullptr, errmsg);
94 NativeLoaderFreeErrorMessage(errmsg);
95 }
96
TEST_F(NativeLoaderLazyTest,OpenNativeLibraryInNamespace)97 TEST_F(NativeLoaderLazyTest, OpenNativeLibraryInNamespace) {
98 CallCreateClassLoaderNamespace("my_classloader_2");
99 struct NativeLoaderNamespace* ns = FindNativeLoaderNamespaceByClassLoader(
100 env.get(), env.get()->NewStringUTF("my_classloader_2"));
101 ASSERT_NE(nullptr, ns);
102
103 bool needs_native_bridge;
104 char* errmsg = nullptr;
105 EXPECT_FALSE(OpenNativeLibraryInNamespace(ns, "libnotfound.so", &needs_native_bridge, &errmsg));
106 EXPECT_NE(nullptr, errmsg);
107 NativeLoaderFreeErrorMessage(errmsg);
108 }
109
TEST_F(NativeLoaderLazyTest,FindNamespaceByClassLoader)110 TEST_F(NativeLoaderLazyTest, FindNamespaceByClassLoader) {
111 EXPECT_EQ(nullptr, FindNamespaceByClassLoader(env.get(), env.get()->NewStringUTF("namespace")));
112 }
113
TEST_F(NativeLoaderLazyTest,FindNativeLoaderNamespaceByClassLoader)114 TEST_F(NativeLoaderLazyTest, FindNativeLoaderNamespaceByClassLoader) {
115 EXPECT_EQ(
116 nullptr,
117 FindNativeLoaderNamespaceByClassLoader(env.get(), env.get()->NewStringUTF("namespace")));
118 }
119
TEST_F(NativeLoaderLazyTest,NativeLoaderFreeErrorMessage)120 TEST_F(NativeLoaderLazyTest, NativeLoaderFreeErrorMessage) {
121 NativeLoaderFreeErrorMessage(nullptr);
122 }
123
124 } // namespace nativeloader
125 } // namespace android
126
127 #endif // defined(ART_TARGET_ANDROID)
128