src/transport/TraceMessage.h

/*
 *
 *    Copyright (c) 2021 Project CHIP Authors
 *    All rights reserved.
 *
 *    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.
 */

#pragma once

#include <lib/core/CHIPConfig.h>
#include <system/SystemPacketBuffer.h>
#include <transport/Session.h>
#include <transport/raw/MessageHeader.h>
#include <transport/raw/PeerAddress.h>

#if CHIP_CONFIG_TRANSPORT_PW_TRACE_ENABLED
#include "pw_trace/trace.h"
#endif // CHIP_CONFIG_TRANSPORT_PW_TRACE_ENABLED

#if CHIP_CONFIG_TRANSPORT_TRACE_ENABLED || CHIP_CONFIG_TRANSPORT_PW_TRACE_ENABLED

#if CHIP_CONFIG_TRANSPORT_TRACE_ENABLED && CHIP_CONFIG_TRANSPORT_PW_TRACE_ENABLED
#define _CHIP_TRACE_MESSAGE_INTERNAL(type, data, size)                                                                             \
    ::chip::trace::internal::HandleTransportTrace(type, data, size);                                                               \
    PW_TRACE_INSTANT_DATA(::chip::trace::kTraceMessageEvent, type, data, size);
#elif CHIP_CONFIG_TRANSPORT_TRACE_ENABLED
#define _CHIP_TRACE_MESSAGE_INTERNAL(type, data, size) ::chip::trace::internal::HandleTransportTrace(type, data, size);
#else // CHIP_CONFIG_TRANSPORT_PW_TRACE_ENABLED
#define _CHIP_TRACE_MESSAGE_INTERNAL(type, data, size) PW_TRACE_INSTANT_DATA(::chip::trace::kTraceMessageEvent, type, data, size);
#endif // CHIP_CONFIG_TRANSPORT_TRACE_ENABLED && CHIP_CONFIG_TRANSPORT_PW_TRACE_ENABLED

#define CHIP_TRACE_MESSAGE_SENT(payloadHeader, packetHeader, peerAddress, data, dataLen)                                           \
    do                                                                                                                             \
    {                                                                                                                              \
        const ::chip::trace::TraceSecureMessageSentData _trace_data{ &payloadHeader, &packetHeader, &peerAddress, data, dataLen }; \
        _CHIP_TRACE_MESSAGE_INTERNAL(::chip::trace::kTraceMessageSentDataFormat, reinterpret_cast<const char *>(&_trace_data),     \
                                     sizeof(_trace_data));                                                                         \
    } while (0)

#define CHIP_TRACE_MESSAGE_RECEIVED(payloadHeader, packetHeader, session, peerAddress, data, dataLen)                              \
    do                                                                                                                             \
    {                                                                                                                              \
        const ::chip::trace::TraceSecureMessageReceivedData _trace_data{ &payloadHeader, &packetHeader, session,                   \
                                                                         &peerAddress,   data,          dataLen };                 \
        _CHIP_TRACE_MESSAGE_INTERNAL(::chip::trace::kTraceMessageReceivedDataFormat, reinterpret_cast<const char *>(&_trace_data), \
                                     sizeof(_trace_data));                                                                         \
    } while (0)

#else // CHIP_CONFIG_TRANSPORT_TRACE_ENABLED || CHIP_CONFIG_TRANSPORT_PW_TRACE_ENABLED
#define CHIP_TRACE_MESSAGE_SENT(payloadHeader, packetHeader, peerAddress, data, dataLen)                                           \
    do                                                                                                                             \
    {                                                                                                                              \
        (void) peerAddress;                                                                                                        \
    } while (0)

#define CHIP_TRACE_MESSAGE_RECEIVED(payloadHeader, packetHeader, session, peerAddress, data, dataLen)                              \
    do                                                                                                                             \
    {                                                                                                                              \
        (void) peerAddress;                                                                                                        \
    } while (0)

#endif // CHIP_CONFIG_TRANSPORT_TRACE_ENABLED || CHIP_CONFIG_TRANSPORT_PW_TRACE_ENABLED

namespace chip {
namespace trace {

inline constexpr char kTraceMessageEvent[]              = "SecureMsg";
inline constexpr char kTraceMessageSentDataFormat[]     = "SecMsgSent";
inline constexpr char kTraceMessageReceivedDataFormat[] = "SecMsgReceived";

struct TraceSecureMessageSentData
{
    const PayloadHeader * payloadHeader;
    const PacketHeader * packetHeader;
    const Transport::PeerAddress * peerAddress;
    const uint8_t * packetPayload;
    size_t packetSize;
};

struct TraceSecureMessageReceivedData
{
    const PayloadHeader * payloadHeader;
    const PacketHeader * packetHeader;
    const Transport::Session * session;
    const Transport::PeerAddress * peerAddress;
    const uint8_t * packetPayload;
    size_t packetSize;
};

#if CHIP_CONFIG_TRANSPORT_TRACE_ENABLED

typedef void (*TransportTraceHandler)(const char * type, const void * data, size_t size);

// Configure the transport trace events to be sent to the provided handler.
void SetTransportTraceHook(TransportTraceHandler);

namespace internal {

void HandleTransportTrace(const char * type, const void * data, size_t size);

} // namespace internal

#endif // CHIP_CONFIG_TRANSPORT_TRACE_ENABLED

} // namespace trace
} // namespace chip