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/*
* Copyright (C) 2020 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 "dalvik_system_DexFile.h"
#include <memory>
#include "class_loader_context.h"
#include "class_root-inl.h"
#include "mirror/object_array-alloc-inl.h"
#include "native_util.h"
#include "nativehelper/jni_macros.h"
#include "thread-inl.h"
namespace art HIDDEN {
static bool append_string(Thread* self,
Handle<mirror::ObjectArray<mirror::String>> array,
uint32_t& i,
const std::string& string) REQUIRES_SHARED(Locks::mutator_lock_) {
ObjPtr<mirror::String> ostring = mirror::String::AllocFromModifiedUtf8(self, string.c_str());
if (ostring == nullptr) {
DCHECK(self->IsExceptionPending());
return false;
}
// We're initializing a newly allocated array object, so we do not need to record that under
// a transaction. If the transaction is aborted, the whole object shall be unreachable.
array->SetWithoutChecks</*kTransactionActive=*/ false, /*kCheckTransaction=*/ false>(i, ostring);
++i;
return true;
}
static jobjectArray BaseDexClassLoader_computeClassLoaderContextsNative(JNIEnv* env,
jobject class_loader) {
CHECK(class_loader != nullptr);
std::map<std::string, std::string> context_map =
ClassLoaderContext::EncodeClassPathContextsForClassLoader(class_loader);
Thread* self = Thread::ForEnv(env);
ScopedObjectAccess soa(self);
StackHandleScope<1u> hs(self);
Handle<mirror::ObjectArray<mirror::String>> array = hs.NewHandle(
mirror::ObjectArray<mirror::String>::Alloc(
self, GetClassRoot<mirror::ObjectArray<mirror::String>>(), 2 * context_map.size()));
if (array == nullptr) {
DCHECK(self->IsExceptionPending());
return nullptr;
}
uint32_t i = 0;
for (const auto& classpath_to_context : context_map) {
const std::string& classpath = classpath_to_context.first;
const std::string& context = classpath_to_context.second;
if (!append_string(self, array, i, classpath) || !append_string(self, array, i, context)) {
return nullptr;
}
}
return soa.AddLocalReference<jobjectArray>(array.Get());
}
static JNINativeMethod gMethods[] = {
NATIVE_METHOD(BaseDexClassLoader, computeClassLoaderContextsNative,
"()[Ljava/lang/String;"),
};
void register_dalvik_system_BaseDexClassLoader(JNIEnv* env) {
REGISTER_NATIVE_METHODS("dalvik/system/BaseDexClassLoader");
}
} // namespace art
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