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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 "chpp/services/loopback.h"
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include "chpp/app.h"
#include "chpp/log.h"
#include "chpp/memory.h"
#include "chpp/transport.h"
/************************************************
* Public Functions
***********************************************/
bool chppDispatchLoopbackClientRequest(struct ChppAppState *context,
uint8_t *buf, size_t len) {
uint8_t *response = chppMalloc(len);
if (response == NULL) {
CHPP_LOG_OOM();
chppEnqueueTxErrorDatagram(context->transportContext,
CHPP_TRANSPORT_ERROR_OOM);
} else {
CHPP_LOGI("Looping back len=%" PRIuSIZE, len);
// Copy received datagram
memcpy(response, buf, len);
// Modify response message type per loopback spec.
struct ChppAppHeader *responseHeader = (struct ChppAppHeader *)response;
responseHeader->type = CHPP_MESSAGE_TYPE_SERVICE_RESPONSE;
// Send out response datagram
chppEnqueueTxDatagramOrFail(context->transportContext, response, len);
}
return true;
}
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