1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
|
/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "base/sdk_version.h"
#include "class_linker.h"
#include "dex/art_dex_file_loader.h"
#include "hidden_api.h"
#include "jni.h"
#include "runtime.h"
#include "scoped_thread_state_change-inl.h"
#include "thread.h"
#include "ti-agent/scoped_utf_chars.h"
namespace art {
namespace Test674HiddenApi {
// Should be the same as dalvik.system.VMRuntime.PREVENT_META_REFLECTION_BLACKLIST_ACCESS
static constexpr uint64_t kPreventMetaReflectionBlacklistAccess = 142365358;
std::vector<std::vector<std::unique_ptr<const DexFile>>> opened_dex_files;
extern "C" JNIEXPORT void JNICALL Java_Main_init(JNIEnv*, jclass) {
Runtime* runtime = Runtime::Current();
runtime->SetHiddenApiEnforcementPolicy(hiddenapi::EnforcementPolicy::kEnabled);
runtime->SetCorePlatformApiEnforcementPolicy(hiddenapi::EnforcementPolicy::kEnabled);
runtime->SetTargetSdkVersion(
static_cast<uint32_t>(hiddenapi::ApiList::GreylistMaxO().GetMaxAllowedSdkVersion()));
runtime->SetDedupeHiddenApiWarnings(false);
}
extern "C" JNIEXPORT void JNICALL Java_Main_setDexDomain(
JNIEnv*, jclass, jint int_index, jboolean is_core_platform) {
size_t index = static_cast<size_t>(int_index);
CHECK_LT(index, opened_dex_files.size());
for (std::unique_ptr<const DexFile>& dex_file : opened_dex_files[index]) {
const_cast<DexFile*>(dex_file.get())->SetHiddenapiDomain(
(is_core_platform == JNI_FALSE) ? hiddenapi::Domain::kPlatform
: hiddenapi::Domain::kCorePlatform);
}
}
extern "C" JNIEXPORT jint JNICALL Java_Main_appendToBootClassLoader(
JNIEnv* env, jclass klass, jstring jpath, jboolean is_core_platform) {
ScopedUtfChars utf(env, jpath);
const char* path = utf.c_str();
CHECK(path != nullptr);
const size_t index = opened_dex_files.size();
const jint int_index = static_cast<jint>(index);
opened_dex_files.push_back(std::vector<std::unique_ptr<const DexFile>>());
ArtDexFileLoader dex_loader;
std::string error_msg;
if (!dex_loader.Open(path,
path,
/* verify */ false,
/* verify_checksum */ true,
&error_msg,
&opened_dex_files[index])) {
LOG(FATAL) << "Could not open " << path << " for boot classpath extension: " << error_msg;
UNREACHABLE();
}
Java_Main_setDexDomain(env, klass, int_index, is_core_platform);
ScopedObjectAccess soa(Thread::Current());
for (std::unique_ptr<const DexFile>& dex_file : opened_dex_files[index]) {
Runtime::Current()->GetClassLinker()->AppendToBootClassPath(Thread::Current(), dex_file.get());
}
return int_index;
}
extern "C" JNIEXPORT void JNICALL Java_Main_setWhitelistAll(JNIEnv*, jclass, jboolean value) {
std::vector<std::string> exemptions;
if (value != JNI_FALSE) {
exemptions.push_back("L");
}
Runtime::Current()->SetHiddenApiExemptions(exemptions);
}
static jobject NewInstance(JNIEnv* env, jclass klass) {
jmethodID constructor = env->GetMethodID(klass, "<init>", "()V");
if (constructor == nullptr) {
return nullptr;
}
return env->NewObject(klass, constructor);
}
extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canDiscoverField(
JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
ScopedUtfChars utf_name(env, name);
jfieldID field = is_static ? env->GetStaticFieldID(klass, utf_name.c_str(), "I")
: env->GetFieldID(klass, utf_name.c_str(), "I");
if (field == nullptr) {
env->ExceptionClear();
return JNI_FALSE;
}
return JNI_TRUE;
}
extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canGetField(
JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
ScopedUtfChars utf_name(env, name);
jfieldID field = is_static ? env->GetStaticFieldID(klass, utf_name.c_str(), "I")
: env->GetFieldID(klass, utf_name.c_str(), "I");
if (field == nullptr) {
env->ExceptionClear();
return JNI_FALSE;
}
if (is_static) {
env->GetStaticIntField(klass, field);
} else {
jobject obj = NewInstance(env, klass);
if (obj == nullptr) {
env->ExceptionDescribe();
env->ExceptionClear();
return JNI_FALSE;
}
env->GetIntField(obj, field);
}
if (env->ExceptionOccurred()) {
env->ExceptionDescribe();
env->ExceptionClear();
return JNI_FALSE;
}
return JNI_TRUE;
}
extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canSetField(
JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
ScopedUtfChars utf_name(env, name);
jfieldID field = is_static ? env->GetStaticFieldID(klass, utf_name.c_str(), "I")
: env->GetFieldID(klass, utf_name.c_str(), "I");
if (field == nullptr) {
env->ExceptionClear();
return JNI_FALSE;
}
if (is_static) {
env->SetStaticIntField(klass, field, 42);
} else {
jobject obj = NewInstance(env, klass);
if (obj == nullptr) {
env->ExceptionDescribe();
env->ExceptionClear();
return JNI_FALSE;
}
env->SetIntField(obj, field, 42);
}
if (env->ExceptionOccurred()) {
env->ExceptionDescribe();
env->ExceptionClear();
return JNI_FALSE;
}
return JNI_TRUE;
}
extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canDiscoverMethod(
JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
ScopedUtfChars utf_name(env, name);
jmethodID method = is_static ? env->GetStaticMethodID(klass, utf_name.c_str(), "()I")
: env->GetMethodID(klass, utf_name.c_str(), "()I");
if (method == nullptr) {
env->ExceptionClear();
return JNI_FALSE;
}
return JNI_TRUE;
}
extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canInvokeMethodA(
JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
ScopedUtfChars utf_name(env, name);
jmethodID method = is_static ? env->GetStaticMethodID(klass, utf_name.c_str(), "()I")
: env->GetMethodID(klass, utf_name.c_str(), "()I");
if (method == nullptr) {
env->ExceptionClear();
return JNI_FALSE;
}
if (is_static) {
env->CallStaticIntMethodA(klass, method, nullptr);
} else {
jobject obj = NewInstance(env, klass);
if (obj == nullptr) {
env->ExceptionDescribe();
env->ExceptionClear();
return JNI_FALSE;
}
env->CallIntMethodA(obj, method, nullptr);
}
if (env->ExceptionOccurred()) {
env->ExceptionDescribe();
env->ExceptionClear();
return JNI_FALSE;
}
return JNI_TRUE;
}
extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canInvokeMethodV(
JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
ScopedUtfChars utf_name(env, name);
jmethodID method = is_static ? env->GetStaticMethodID(klass, utf_name.c_str(), "()I")
: env->GetMethodID(klass, utf_name.c_str(), "()I");
if (method == nullptr) {
env->ExceptionClear();
return JNI_FALSE;
}
if (is_static) {
env->CallStaticIntMethod(klass, method);
} else {
jobject obj = NewInstance(env, klass);
if (obj == nullptr) {
env->ExceptionDescribe();
env->ExceptionClear();
return JNI_FALSE;
}
env->CallIntMethod(obj, method);
}
if (env->ExceptionOccurred()) {
env->ExceptionDescribe();
env->ExceptionClear();
return JNI_FALSE;
}
return JNI_TRUE;
}
static constexpr size_t kConstructorSignatureLength = 5; // e.g. (IZ)V
static constexpr size_t kNumConstructorArgs = kConstructorSignatureLength - 3;
extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canDiscoverConstructor(
JNIEnv* env, jclass, jclass klass, jstring args) {
ScopedUtfChars utf_args(env, args);
jmethodID constructor = env->GetMethodID(klass, "<init>", utf_args.c_str());
if (constructor == nullptr) {
env->ExceptionClear();
return JNI_FALSE;
}
return JNI_TRUE;
}
extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canInvokeConstructorA(
JNIEnv* env, jclass, jclass klass, jstring args) {
ScopedUtfChars utf_args(env, args);
jmethodID constructor = env->GetMethodID(klass, "<init>", utf_args.c_str());
if (constructor == nullptr) {
env->ExceptionClear();
return JNI_FALSE;
}
// CheckJNI won't allow out-of-range values, so just zero everything.
CHECK_EQ(strlen(utf_args.c_str()), kConstructorSignatureLength);
size_t initargs_size = sizeof(jvalue) * kNumConstructorArgs;
jvalue *initargs = reinterpret_cast<jvalue*>(alloca(initargs_size));
memset(initargs, 0, initargs_size);
env->NewObjectA(klass, constructor, initargs);
if (env->ExceptionOccurred()) {
env->ExceptionDescribe();
env->ExceptionClear();
return JNI_FALSE;
}
return JNI_TRUE;
}
extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canInvokeConstructorV(
JNIEnv* env, jclass, jclass klass, jstring args) {
ScopedUtfChars utf_args(env, args);
jmethodID constructor = env->GetMethodID(klass, "<init>", utf_args.c_str());
if (constructor == nullptr) {
env->ExceptionClear();
return JNI_FALSE;
}
// CheckJNI won't allow out-of-range values, so just zero everything.
CHECK_EQ(strlen(utf_args.c_str()), kConstructorSignatureLength);
size_t initargs_size = sizeof(jvalue) * kNumConstructorArgs;
jvalue *initargs = reinterpret_cast<jvalue*>(alloca(initargs_size));
memset(initargs, 0, initargs_size);
static_assert(kNumConstructorArgs == 2, "Change the varargs below if you change the constant");
env->NewObject(klass, constructor, initargs[0], initargs[1]);
if (env->ExceptionOccurred()) {
env->ExceptionDescribe();
env->ExceptionClear();
return JNI_FALSE;
}
return JNI_TRUE;
}
extern "C" JNIEXPORT jint JNICALL Java_Reflection_getHiddenApiAccessFlags(JNIEnv*, jclass) {
return static_cast<jint>(kAccHiddenapiBits);
}
extern "C" JNIEXPORT void JNICALL Java_Reflection_setHiddenApiCheckHardening(JNIEnv*, jclass,
jboolean value) {
std::set<uint64_t> disabled_changes = Runtime::Current()->GetDisabledCompatChanges();
if (value == JNI_TRUE) {
// If hidden api check hardening is enabled, remove it from the set of disabled changes.
disabled_changes.erase(kPreventMetaReflectionBlacklistAccess);
} else {
// If hidden api check hardening is disabled, add it to the set of disabled changes.
disabled_changes.insert(kPreventMetaReflectionBlacklistAccess);
}
Runtime::Current()->SetDisabledCompatChanges(disabled_changes);
}
} // namespace Test674HiddenApi
} // namespace art
|
