| /* |
| * Copyright (C) 2018 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 "jni.h" |
| |
| class ScopedUtfChars { |
| public: |
| ScopedUtfChars(JNIEnv* env, jstring s) : env_(env), string_(s) { |
| if (s == NULL) { |
| utf_chars_ = NULL; |
| } else { |
| utf_chars_ = env->GetStringUTFChars(s, NULL); |
| } |
| } |
| |
| ~ScopedUtfChars() { |
| if (utf_chars_) { |
| env_->ReleaseStringUTFChars(string_, utf_chars_); |
| } |
| } |
| |
| const char* c_str() const { |
| return utf_chars_; |
| } |
| |
| private: |
| JNIEnv* env_; |
| jstring string_; |
| const char* utf_chars_; |
| }; |
| |
| extern "C" JNIEXPORT jobject JNICALL |
| Java_android_signature_cts_DexMemberChecker_getField_1JNI( |
| JNIEnv* env, jclass, jclass klass, jstring name, jstring type) { |
| ScopedUtfChars utf_name(env, name); |
| ScopedUtfChars utf_type(env, type); |
| jfieldID fid = env->GetFieldID(klass, utf_name.c_str(), utf_type.c_str()); |
| if (env->ExceptionCheck()) { |
| // GetFieldID could have thrown either NoSuchFieldError or ExceptionInInitializerError. |
| // Do not clear the exception, let Java code handle it. |
| return nullptr; |
| } |
| return env->ToReflectedField(klass, fid, /* static */ false); |
| } |
| |
| extern "C" JNIEXPORT jobject JNICALL |
| Java_android_signature_cts_DexMemberChecker_getStaticField_1JNI( |
| JNIEnv* env, jclass, jclass klass, jstring name, jstring type) { |
| ScopedUtfChars utf_name(env, name); |
| ScopedUtfChars utf_type(env, type); |
| jfieldID fid = env->GetStaticFieldID(klass, utf_name.c_str(), utf_type.c_str()); |
| if (env->ExceptionCheck()) { |
| // GetStaticFieldID could have thrown either NoSuchFieldError or ExceptionInInitializerError. |
| // Do not clear the exception, let Java code handle it. |
| return nullptr; |
| } |
| return env->ToReflectedField(klass, fid, /* static */ true); |
| } |
| |
| extern "C" JNIEXPORT jobject JNICALL |
| Java_android_signature_cts_DexMemberChecker_getMethod_1JNI( |
| JNIEnv* env, jclass, jclass klass, jstring name, jstring signature) { |
| ScopedUtfChars utf_name(env, name); |
| ScopedUtfChars utf_signature(env, signature); |
| jmethodID mid = env->GetMethodID(klass, utf_name.c_str(), utf_signature.c_str()); |
| if (env->ExceptionCheck()) { |
| // GetMethodID could have thrown either NoSuchMethodError or ExceptionInInitializerError. |
| // Do not clear the exception, let Java code handle it. |
| return nullptr; |
| } |
| return env->ToReflectedMethod(klass, mid, /* static */ false); |
| } |
| |
| extern "C" JNIEXPORT jobject JNICALL |
| Java_android_signature_cts_DexMemberChecker_getStaticMethod_1JNI( |
| JNIEnv* env, jclass, jclass klass, jstring name, jstring signature) { |
| ScopedUtfChars utf_name(env, name); |
| ScopedUtfChars utf_signature(env, signature); |
| jmethodID mid = env->GetStaticMethodID(klass, utf_name.c_str(), utf_signature.c_str()); |
| if (env->ExceptionCheck()) { |
| // GetStaticMethodID could have thrown either NoSuchMethodError or ExceptionInInitializerError. |
| // Do not clear the exception, let Java code handle it. |
| return nullptr; |
| } |
| return env->ToReflectedMethod(klass, mid, /* static */ true); |
| } |