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100 lines
3.5 KiB
100 lines
3.5 KiB
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "jni.h"
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class ScopedUtfChars {
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public:
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ScopedUtfChars(JNIEnv* env, jstring s) : env_(env), string_(s) {
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if (s == NULL) {
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utf_chars_ = NULL;
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} else {
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utf_chars_ = env->GetStringUTFChars(s, NULL);
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}
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}
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~ScopedUtfChars() {
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if (utf_chars_) {
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env_->ReleaseStringUTFChars(string_, utf_chars_);
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}
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}
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const char* c_str() const {
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return utf_chars_;
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}
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private:
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JNIEnv* env_;
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jstring string_;
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const char* utf_chars_;
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};
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extern "C" JNIEXPORT jobject JNICALL
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Java_android_signature_cts_DexMemberChecker_getField_1JNI(
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JNIEnv* env, jclass, jclass klass, jstring name, jstring type) {
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ScopedUtfChars utf_name(env, name);
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ScopedUtfChars utf_type(env, type);
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jfieldID fid = env->GetFieldID(klass, utf_name.c_str(), utf_type.c_str());
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if (env->ExceptionCheck()) {
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// GetFieldID could have thrown either NoSuchFieldError or ExceptionInInitializerError.
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// Do not clear the exception, let Java code handle it.
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return nullptr;
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}
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return env->ToReflectedField(klass, fid, /* static */ false);
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}
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extern "C" JNIEXPORT jobject JNICALL
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Java_android_signature_cts_DexMemberChecker_getStaticField_1JNI(
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JNIEnv* env, jclass, jclass klass, jstring name, jstring type) {
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ScopedUtfChars utf_name(env, name);
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ScopedUtfChars utf_type(env, type);
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jfieldID fid = env->GetStaticFieldID(klass, utf_name.c_str(), utf_type.c_str());
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if (env->ExceptionCheck()) {
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// GetStaticFieldID could have thrown either NoSuchFieldError or ExceptionInInitializerError.
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// Do not clear the exception, let Java code handle it.
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return nullptr;
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}
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return env->ToReflectedField(klass, fid, /* static */ true);
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}
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extern "C" JNIEXPORT jobject JNICALL
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Java_android_signature_cts_DexMemberChecker_getMethod_1JNI(
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JNIEnv* env, jclass, jclass klass, jstring name, jstring signature) {
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ScopedUtfChars utf_name(env, name);
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ScopedUtfChars utf_signature(env, signature);
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jmethodID mid = env->GetMethodID(klass, utf_name.c_str(), utf_signature.c_str());
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if (env->ExceptionCheck()) {
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// GetMethodID could have thrown either NoSuchMethodError or ExceptionInInitializerError.
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// Do not clear the exception, let Java code handle it.
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return nullptr;
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}
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return env->ToReflectedMethod(klass, mid, /* static */ false);
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}
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extern "C" JNIEXPORT jobject JNICALL
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Java_android_signature_cts_DexMemberChecker_getStaticMethod_1JNI(
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JNIEnv* env, jclass, jclass klass, jstring name, jstring signature) {
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ScopedUtfChars utf_name(env, name);
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ScopedUtfChars utf_signature(env, signature);
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jmethodID mid = env->GetStaticMethodID(klass, utf_name.c_str(), utf_signature.c_str());
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if (env->ExceptionCheck()) {
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// GetStaticMethodID could have thrown either NoSuchMethodError or ExceptionInInitializerError.
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// Do not clear the exception, let Java code handle it.
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return nullptr;
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}
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return env->ToReflectedMethod(klass, mid, /* static */ true);
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}
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