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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/cronet/android/shared_dictionary_with_byte_buffer.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/compiler_specific.h"
#include "net/base/net_errors.h"
namespace cronet {
namespace {
net::SHA256HashValue ByteArrayToSHA256(
JNIEnv* env,
const base::android::JavaRef<jbyteArray>& jdictionary_sha256_hash) {
const auto dictionary_sha256_hash_size =
base::android::SafeGetArrayLength(env, jdictionary_sha256_hash);
CHECK_EQ(dictionary_sha256_hash_size, sizeof(net::SHA256HashValue));
net::SHA256HashValue dictionary_sha256_hash;
void* const bytes = env->GetPrimitiveArrayCritical(
jdictionary_sha256_hash.obj(), /*isCopy=*/nullptr);
CHECK(bytes);
UNSAFE_TODO(memcpy(dictionary_sha256_hash.data(), bytes,
dictionary_sha256_hash_size));
env->ReleasePrimitiveArrayCritical(jdictionary_sha256_hash.obj(), bytes,
JNI_ABORT);
return dictionary_sha256_hash;
}
} // namespace
// static
scoped_refptr<SharedDictionaryWithByteBuffer>
SharedDictionaryWithByteBuffer::MaybeCreate(
JNIEnv* env,
const base::android::JavaRef<jbyteArray>& dictionary_sha256_hash,
const base::android::JavaRef<jobject>& dictionary_content_byte_buffer,
jint dictionary_content_position,
jint dictionary_content_limit,
const base::android::JavaRef<jstring>& dictionary_id) {
if (dictionary_sha256_hash.obj() == nullptr ||
dictionary_content_byte_buffer.obj() == nullptr) {
return nullptr;
}
return new SharedDictionaryWithByteBuffer(
env, dictionary_sha256_hash, dictionary_content_byte_buffer,
dictionary_content_position, dictionary_content_limit, dictionary_id);
}
SharedDictionaryWithByteBuffer::SharedDictionaryWithByteBuffer(
JNIEnv* env,
const base::android::JavaRef<jbyteArray>& dictionary_sha256_hash,
const base::android::JavaRef<jobject>& dictionary_content_byte_buffer,
jint dictionary_content_position,
jint dictionary_content_limit,
const base::android::JavaRef<jstring>& dictionary_id)
: hash_(ByteArrayToSHA256(env, dictionary_sha256_hash)),
content_(base::MakeRefCounted<IOBufferWithByteBuffer>(
env,
dictionary_content_byte_buffer,
dictionary_content_position,
dictionary_content_limit)),
id_(base::android::ConvertJavaStringToUTF8(env, dictionary_id)) {}
SharedDictionaryWithByteBuffer::~SharedDictionaryWithByteBuffer() = default;
int SharedDictionaryWithByteBuffer::ReadAll(
base::OnceCallback<void(int)> callback) {
// Dictionary is always in memory.
return net::OK;
}
scoped_refptr<net::IOBuffer> SharedDictionaryWithByteBuffer::data() const {
return content_;
}
const net::SHA256HashValue& SharedDictionaryWithByteBuffer::hash() const {
return hash_;
}
const std::string& SharedDictionaryWithByteBuffer::id() const {
return id_;
}
size_t SharedDictionaryWithByteBuffer::size() const {
return content_->size();
}
} // namespace cronet
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