openthread/examples/platforms/utils/mac_frame.cpp

/*
 *  Copyright (c) 2019, The OpenThread Authors.
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the copyright holder nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 */

#include "mac_frame.h"

#include "mac/mac_frame.hpp"

using namespace ot;

bool otMacFrameDoesAddrMatch(const otRadioFrame *aFrame,
                             otPanId             aPanId,
                             otShortAddress      aShortAddress,
                             const otExtAddress *aExtAddress)
{
    const Mac::Frame &frame = *static_cast<const Mac::Frame *>(aFrame);
    bool              rval  = false;
    Mac::Address      dst;
    Mac::PanId        panid;

    SuccessOrExit(frame.GetDstAddr(dst));

    switch (dst.GetType())
    {
    case Mac::Address::kTypeShort:
        SuccessOrExit(frame.GetDstPanId(panid));
        rval = (panid == Mac::kPanIdBroadcast || panid == aPanId) &&
               (dst.GetShort() == Mac::kShortAddrBroadcast || dst.GetShort() == aShortAddress);
        break;

    case Mac::Address::kTypeExtended:
        SuccessOrExit(frame.GetDstPanId(panid));
        rval = (panid == Mac::kPanIdBroadcast || panid == aPanId) &&
               dst.GetExtended() == *static_cast<const Mac::ExtAddress *>(aExtAddress);
        break;

    case Mac::Address::kTypeNone:
        rval = true;
        break;
    }

exit:
    return rval;
}

bool otMacFrameIsAck(const otRadioFrame *aFrame)
{
    return static_cast<const Mac::Frame *>(aFrame)->GetType() == Mac::Frame::kFcfFrameAck;
}

bool otMacFrameIsDataRequest(const otRadioFrame *aFrame)
{
    return static_cast<const Mac::Frame *>(aFrame)->IsDataRequestCommand();
}

bool otMacFrameIsAckRequested(const otRadioFrame *aFrame)
{
    return static_cast<const Mac::Frame *>(aFrame)->GetAckRequest();
}

otError otMacFrameGetSrcAddr(const otRadioFrame *aFrame, otMacAddress *aMacAddress)
{
    otError      error;
    Mac::Address address;

    error = static_cast<const Mac::Frame *>(aFrame)->GetSrcAddr(address);
    SuccessOrExit(error);

    switch (address.GetType())
    {
    case Mac::Address::kTypeNone:
        aMacAddress->mType = OT_MAC_ADDRESS_TYPE_NONE;
        break;

    case Mac::Address::kTypeShort:
        aMacAddress->mType                  = OT_MAC_ADDRESS_TYPE_SHORT;
        aMacAddress->mAddress.mShortAddress = address.GetShort();
        break;

    case Mac::Address::kTypeExtended:
        aMacAddress->mType                = OT_MAC_ADDRESS_TYPE_EXTENDED;
        aMacAddress->mAddress.mExtAddress = address.GetExtended();
        break;
    }

exit:
    return error;
}

uint8_t otMacFrameGetSequence(const otRadioFrame *aFrame)
{
    return static_cast<const Mac::Frame *>(aFrame)->GetSequence();
}